LiftMaster RSW12UL Instruction Manual

This page presents the LiftMaster RSW12UL residential DC vehicular swing gate operator installation manual as searchable, linkable HTML: specifications, safety requirements, installation, wiring, adjustment, programming, troubleshooting, diagnostic codes, maintenance, solar panels, and replacement parts.

Common tasks: Set the limits | Program a remote | Wiring diagram | Diagnostic codes | Gate will not close | Replace batteries | Replacement parts

LiftMaster RSW12UL Manual Overview

The LiftMaster RSW12UL is a residential 12 Vdc vehicular swing gate operator. LiftMaster's installation manual (document 01-39378 revision B) states that the product is to be installed and serviced by a trained gate systems technician only, is for use on vehicular passage gates ONLY and not intended for use on pedestrian passage gates, and is intended for Class I and II vehicular swing gate applications. The operator runs on a 12 Vdc battery (7AH provided) charged by its integrated transformer on 120 Vac, or by a solar panel. LiftMaster states that the operator requires a LiftMaster external monitored entrapment protection device to be installed in all entrapment zones.

What Is in the RSW12UL Carton

LiftMaster's carton inventory (page 6) is an illustration; the manual notes that the documentation packet and hardware bag are not shown. Per the repair parts page (47) the operator includes a 12 Vdc 7AH battery (29-NP712), the arm assembly, the cover, and keys. Your carton also includes the LiftMaster monitored retro-reflective photoelectric sensor and warning signs (see the image below).

Source: LiftMaster manual, 01-39378 revision B, page 6.

Back to contents

LiftMaster RSW12UL Specifications

RSW12UL operator specifications as printed by LiftMaster (page 7)

Swipe sideways to see all columns.

*Travel time and range are affected by the A and B mounting dimensions (see Determine Location for Concrete Pad and Operator).Determine Mounting Location).

Source: LiftMaster manual, 01-39378 revision B, page 7.

Back to contents

Important Safety Information

This section reproduces the safety requirements that LiftMaster places at the front of the RSW12UL manual (pages 1 to 5). Safety text is kept close to the manufacturer's wording on purpose.

Who Should Install and Service the RSW12UL

LiftMaster's manual also includes a Safety Symbol and Signal Word Review on page 2. See the original manual for the symbols and signal words LiftMaster uses.

Source: LiftMaster manual, 01-39378 revision B, page 1.

Gate Operator Usage Classes

LiftMaster's manual defines four vehicular gate operator usage classes (page 3). The RSW12UL is intended for Class I and II.

• Class I, Residential Vehicular Gate Operator: a vehicular gate operator (or system) intended for use in garages or parking areas associated with a residence of one to four single families.
• Class II, Commercial/General Access Vehicular Gate: a vehicular gate operator (or system) intended for use in a commercial location or building such as a multi-family housing unit (five or more single family units), hotel, garages, retail store, or other buildings accessible by or servicing the general public.
• Class III, Industrial/Limited Access Vehicular Gate: a vehicular gate operator (or system) intended for use in an industrial location or building such as a factory or loading dock area or other locations not accessible by or intended to service the general public.
• Class IV, Restricted Access Vehicular Gate Operator: a vehicular gate operator (or system) intended for use in a guarded industrial location or building such as an airport security area or other restricted access locations not servicing the general public, in which unauthorized access is prevented via supervision by security personnel.

Source: LiftMaster manual, 01-39378 revision B, page 3.

UL 325 Entrapment Protection Requirements for the RSW12UL

• A minimum of two independent* monitored entrapment protection devices are required to be installed at each entrapment zone.
• Every installation is unique. It is the responsibility of the installer to install external monitored entrapment protection devices in each entrapment zone.
• This vehicular swing gate operator will operate only after installation of a minimum of two independent* monitored entrapment protection devices in either the open or close direction. If no entrapment zone exists in the other direction of gate travel, then the inherent device (built into the operator) is all that is required in that direction.
• Entrapment protection device types include inherent (built into the operator), monitored external photoelectric sensors, or monitored external edge sensors.
• This operator is provided with an inherent entrapment protection device built into the operator that serves as one of the two independent devices.

* Independent: the same type of device shall NOT be used for both entrapment protection devices.

Source: LiftMaster manual, 01-39378 revision B, page 3.

Safety Installation Information

1. Vehicular gate systems provide convenience and security. Gate systems are comprised of many component parts. The gate operator is only one component. Each gate system is specifically designed for an individual application.
2. Gate operating system designers, installers and users must take into account the possible hazards associated with each individual application. Improperly designed, installed or maintained systems can create risks for the user as well as the bystander. Gate systems design and installation must reduce public exposure to potential hazards.
3. A gate operator can create high levels of force in its function as a component part of a gate system. Therefore, safety features must be incorporated into every design. Specific safety features include edge sensors (contact), photoelectric sensors, vertical posts, and instructional and precautionary signage.
4. Install the gate operator only when: (a) the operator is appropriate for the construction and the usage class of the gate; (b) all exposed pinch points are eliminated or guarded, and guarding is supplied for exposed rollers.
5. The operator is intended for installation only on gates used for vehicles. Pedestrians must be supplied with a separate access opening. The pedestrian access opening shall be designed to promote pedestrian usage. Locate the gate such that persons will not come in contact with the vehicular gate during the entire path of travel of the vehicular gate.
6. The gate must be installed in a location so that enough clearance is supplied between the gate and adjacent structures when opening and closing to reduce the risk of entrapment. Swinging gates shall not open into public access areas.
7. The gate must be properly installed and work freely in both directions prior to the installation of the gate operator. (Per LiftMaster, one or more contact sensors shall be located on the bottom edge of a swing gate when the bottom edge is greater than 4 inches (10.1 cm) but less than 16 inches (406 mm) above the ground at any point in its arc of travel; see item 12.)
8. Permanently mounted access controls intended for users to activate must be located at least 6 feet (1.8 m) away from any moving part of the gate and where the user is prevented from reaching over, under, around or through the gate to operate the controls. Outdoor or easily accessible controls shall have a security feature to prevent unauthorized use. Exception: emergency access controls only accessible by authorized personnel (e.g. fire, police) may be placed at any location in the line-of-sight of the gate.
9. The Stop and/or Reset (if provided separately) must be located in the line-of-sight of the gate. Activation of the reset control shall not cause the operator to start.
10. A minimum of two (2) WARNING SIGNS shall be installed in the area of the gate. Each placard is to be visible by persons located on the side of the gate on which the placard is installed.
11. For a gate operator utilizing a non-contact sensor: (a) reference the owner's manual regarding placement of non-contact sensors for each type of application (see Install Entrapment Protection); (b) care shall be exercised to reduce the risk of nuisance tripping, such as when a vehicle trips the sensor while the gate is still moving; (c) one or more non-contact sensors shall be located where the risk of entrapment or obstruction exists, such as the perimeter reachable by a moving gate or barrier.
12. For a gate operator utilizing a contact sensor such as an edge sensor: (a) one or more contact sensors shall be located where the risk of entrapment or obstruction exists; (b) a hard wired contact sensor shall be located and its wiring arranged so the communication between the sensor and the gate operator is not subject to mechanical damage; (c) a wireless device such as one that transmits radio frequency (RF) signals to the gate operator for entrapment protection functions shall be located where the transmission of the signals is not obstructed or impeded by building structures, natural landscaping or similar obstruction, and shall function under the intended end-use conditions; (d) one or more contact sensors shall be located on the inside and outside leading edge of a swing gate. Additionally, if the bottom edge of a swing gate is greater than 4 inches (10.1 cm) but less than 16 inches (406 mm) above the ground at any point in its arc of travel, one or more contact sensors shall be located on the bottom edge.

Source: LiftMaster manual, 01-39378 revision B, page 4.

Gate Construction Requirements (ASTM F2200)

LiftMaster states that vehicular gates should be installed in accordance with ASTM F2200, Standard Specification for Automated Vehicular Gate Construction (contact ASTM at 610-832-9585 or www.astm.org for a copy). The manual lists these provisions (page 5):

General requirements

• 1.1 Gates shall be constructed in accordance with the provisions given for the appropriate gate type listed; refer to ASTM F2200 for additional gate types.
• 1.2 Gates shall be designed, constructed and installed to not fall over more than 45 degrees from the vertical plane, when a gate is detached from the supporting hardware.
• 1.3 Gates shall have smooth bottom edges, with vertical bottom edged protrusions not exceeding 0.50 inches (12.7 mm) when other than the exceptions listed in ASTM F2200.
• 1.4 The minimum height for barbed tape shall not be less than 8 feet (2.44 m) above grade and for barbed wire shall not be less than 6 feet (1.83 m) above grade.
• 1.5 An existing gate latch shall be disabled when a manually operated gate is retrofitted with a powered gate operator.
• 1.6 A gate latch shall not be installed on an automatically operated gate.
• 1.7 Protrusions shall not be permitted on any gate; refer to ASTM F2200 for exceptions.
• 1.8 Gates shall be designed, constructed and installed such that their movement shall not be initiated by gravity when an automatic operator is disconnected. For a vehicular horizontal swing gate (1.8.1), this shall not result in continuous, unimpeded movement in either direction along the arc of its path of travel.
• 1.9 For pedestrian access in the vicinity of an automated vehicular gate, a separate pedestrian gate shall be provided. The pedestrian gate shall be installed in a location such that a pedestrian shall not come in contact with a moving vehicular access gate. A pedestrian gate shall not be incorporated into an automated vehicular gate panel.

Specific applications

• 2.1 Any non-automated gate that is to be automated shall be upgraded to conform to the provisions of this specification.
• 2.2 This specification shall not apply to gates generally used for pedestrian access and to vehicular gates not to be automated.
• 2.3 When the gate operator requires replacement, the existing gate shall be upgraded to conform to the provisions of this specification.
• 2.4 When the gate of an automated gate system requires replacement, the new gate shall conform to the provisions of this specification.

Vehicular horizontal swing gates

• 3.1 The following provisions apply to Class I, Class II and Class III vehicular horizontal swing gates. 3.1.1 Gates shall be designed, constructed and installed so as not to create an entrapment area between the gate and the supporting structure or other fixed object when the gate moves toward the fully open position, subject to 3.1.1.1 and 3.1.1.2.
• 3.1.1.1 The width of an object (such as a wall, pillar or column) covered by a swing gate when in the open position shall not exceed 4 inches (102 mm), measured from the center line of the pivot point of the gate. Exception: for a gate not in compliance with this provision, the defined area must be provided with entrapment protection per UL 325.
• 3.1.1.2 Except for the zone specified in Section 3.1.1.1, the distance between a fixed object such as a wall, pillar or column, and a swing gate when in the open position shall not be less than 16 inches (406 mm). Exception: for a gate not in compliance with this provision, the defined area must be provided with entrapment protection per UL 325.
• 3.2 Class IV vehicular horizontal swing gates shall be designed, constructed and installed in accordance with security related parameters specific to the application in question.

Source: LiftMaster manual, 01-39378 revision B, page 5.

Back to contents

LiftMaster RSW12UL Installation

LiftMaster presents RSW12UL installation as ten steps, followed by limit and force adjustment and an obstruction test. A compact installation (where the operator arm would hit an obstruction in the open position) is described in the appendix. Each step below is labeled with the matching LiftMaster step number.

1. Step 1, Determine location for concrete pad and operator
2. Step 2, Concrete pad and operator attachment
3. Step 3, Position the gate bracket
4. Step 4, Adjust the operator arm length
5. Step 5, Secure the operator arm
6. Step 6, Install entrapment protection
7. Step 7, Earth ground rod
8. Step 8, Power wiring
9. Step 9, Dual gate setup
10. Step 10, Install the cover

After Step 10, LiftMaster states that the basic installation is complete and continues with limit and force adjustment and the obstruction test. Solar installations also use Solar Panels in the appendix.

Installation Requirements

Source: LiftMaster manual, 01-39378 revision B, page 9.

Site Preparation

• Check the national and local building codes BEFORE installation.
• Trench: trench and install conduit. Before trenching, contact underground utility locating companies. Conduit must be UL approved for low and high voltage.
• Safety: entrapment protection devices are required to protect against any entrapment or safety conditions encountered in your gate application. Install a warning sign (two provided) on the inside and outside of the property, where easily visible.
• Gate: the gate must be constructed and installed according to ASTM F2200 standards (see Gate Construction Requirements), and must fit the specifications of the operator (see Specifications).
• Additional accessories: vehicle loops allow the gate to stay open when vehicles are obstructing the gate path. They are suggested for vehicles 14 feet (4.27 m) or longer and are not required but are recommended. Before installing your access control device(s), complete a site survey and determine the best device for your site needs.

Check your gate (LiftMaster): the gate MUST be level. The gate and gate post MUST be plumb. The gate MUST have a smooth bottom edge, and no protrusions should exist. Remove ANY/ALL wheels from the bottom of the gate. The gate MUST NOT hit or drag across the ground. The gate MUST swing freely and be supported entirely by its hinges.

Source: LiftMaster manual, 01-39378 revision B, page 8.

Determine Location for Concrete Pad and Operator (Step 1)

For a compact installation, refer to the Appendix for installation steps 1 to 4 (page 39). DO NOT run the operator until instructed. LiftMaster's illustration shows the recommended dimensions for a standard installation; if those dimensions are not applicable, use the chart on page 10 for alternate dimensions. There should only be a maximum of 4 inches (10.2 cm) from the center of the hinge to the edge of the post or column. If the distance is greater than 4 inches (10.2 cm), entrapment protection for this area is required.

Alternate dimension charts (page 10). Dimensions A to E in the charts are measured from the center of one pivot point to the center of another pivot point. LiftMaster cautions that if the gate is longer than 18 feet (5.5 m), you should follow Chart A, column A-2. LiftMaster also suggests that the dimension between the gate and the concrete pad is always 10 inches (25.4 cm) less than dimension D (for example, D = 42 inches (106.7 cm) gives 32 inches (81.3 cm)). The chart values are printed on page 10 of the manual and are not reproduced here; use the original page for the A, B, C, D, E, and distance values for each option.

Source: LiftMaster manual, 01-39378 revision B, pages 9 to 10.

Concrete Pad and Operator Attachment (Step 2)

CHECK the national and local building codes before installation. When lifting the operator, use the handle to avoid damaging the operator.

Source: LiftMaster manual, 01-39378 revision B, page 11.

Position the Gate Bracket (Step 3)

It may be necessary to attach horizontal reinforcement to the gate before attaching the gate bracket.

Adjust the Operator Arm Length (Step 4)

The length of the arm can be adjusted if necessary. If adjusting the length, ensure that both sections of the arm are adjusted proportionally. Use the set screws on the arm to temporarily hold the arm in place while determining the correct measurements.

Source: LiftMaster manual, 01-39378 revision B, page 12.

Secure the Operator Arm (Step 5)

Source: LiftMaster manual, 01-39378 revision B, page 13.

Installing Entrapment Protection Devices (Step 6)

Entrapment protection MUST be installed according to the following UL 325 requirements:

• Swing gate operators require the installation of the first external monitored entrapment protection device to function.
• Every installation is unique. It is the responsibility of the installer to ensure that ALL entrapment zones are protected with an external monitored entrapment protection device, protecting both the open and close gate cycles.
• LiftMaster monitored external entrapment protection devices MUST be used with LiftMaster operators to meet UL 325 requirements, see Accessories.
• Test ALL entrapment protection devices after completing installation of the operator. For testing instructions, refer to the manual provided with your entrapment protection device.

LiftMaster's definitions:

• ENTRAPMENT: the condition when a person is caught or held in a position that increases the risk of injury.
• SWING GATE ENTRAPMENT ZONE: locations between a moving gate or moving, exposed operator components and a counter opposing edge or surface where entrapment is possible up to 1.8 m (6 ft) above grade. Such locations occur if during any point in travel: (a) the gap between the bottom of a moving gate and the ground is greater than 101.6 mm (4 in) and less than 406 mm (16 in); or (b) the distance between the center line of the pivot and the end of the wall, pillar, or column to which it is mounted when in the open or closed position exceeds 101.6 mm (4 in). Any other gap between a moving gate and fixed counter opposing edges or surfaces or other fixed objects is less than 406 mm (16 in) (examples are walls, curbs, berms or other immovable objects).

LiftMaster's illustrations (credited to the DASMA Gate Systems Safety Guide) show examples. See the original manual (page 14).

Source: LiftMaster manual, 01-39378 revision B, page 14.

Wiring entrapment protection devices

LiftMaster describes three options for wiring external devices, depending on the device and how it will function. Refer to the manual included with your entrapment protection device. The inputs are for monitored devices, which include pulsed photoelectric sensors, resistive edge sensors, and pulsed edge sensors. Only one monitored entrapment protection device may be wired to each input. Additional devices may be wired to the expansion board.

RSW12UL entrapment protection inputs

Swipe sideways to see all columns.

Source: LiftMaster manual, 01-39378 revision B, page 15.

Earth Ground Rod (Step 7)

Use the proper earth ground rod for your local area. The ground wire must be a single, whole piece of wire. Never splice two wires for the ground wire. If you cut the ground wire too short, break it, or destroy its integrity, replace it with a single wire length.

1. Install the earth ground rod within 3 feet (.9 m) of the operator.
2. Run wire from the earth ground rod to the operator.

LiftMaster notes that if the operator is not grounded properly the range of the remote controls will be reduced and the operator will be more susceptible to lightning and surge damage.

Source: LiftMaster manual, 01-39378 revision B, page 16.

Power Wiring (Step 8)

The operator can be wired for either 120 Vac or a solar panel (not provided); follow the directions according to your application. The battery is charged in the circuit by the integrated transformer. The operator requires one 7AH battery (provided) or one 33AH battery; the 33AH application requires the 33AH wire harness (Model K94-37236). For dual gate applications, power will have to be connected to each operator. Main power supply and control wiring MUST be run in separate conduits. For solar applications refer to Solar Panels in the appendix.

RSW12UL maximum wire length by operator power source

Swipe sideways to see all columns.

Use copper conductors ONLY. All control wiring used to connect external devices to Class 2 circuits of the operator must be (QPTZ) Power-Limited Circuit Cables, Type CL2, CL2P, CL2R, or CL2X or other cable with equivalent or better electrical, mechanical, and flammability ratings.

Source: LiftMaster manual, 01-39378 revision B, pages 16 to 17.

Dual Gate Setup (Step 9)

There are two options for dual gate communication: wired or wireless. Follow the directions according to your application. Do not use wired and wireless communication simultaneously. Wired dual gate applications will have a longer battery standby time than wireless applications.

Source: LiftMaster manual, 01-39378 revision B, page 18.

Bipart delay and synchronized close

The LOCK/BIPART DELAY switch is used only with dual gate applications and serves two functions. Bipart delay, swing gate applications: used in applications where a mag-lock, solenoid lock, or decorative overlay would require one gate to close before the other. The operator with the LOCK/BIPART DELAY switch ON will delay from the close limit when opening and be the first to close from the open limit. (For slide gate applications LiftMaster says: not applicable, set to OFF.) Synchronized close: also used in applications where one gate travels a longer distance than the other. To synchronize the closing of the gates, set the LOCK/BIPART DELAY switch to ON for both operators.

Source: LiftMaster manual, 01-39378 revision B, pages 18 to 19.

Install the Cover (Step 10)

Before installing the cover, follow the instructions in the Adjustment section to adjust the limits and force. The operator cover consists of two pieces: a rear cover and a front cover. The front cover can easily be removed to access the electrical box. To access the reset switch, slide the access door up. The front cover and access door can be locked with the key.

Source: LiftMaster manual, 01-39378 revision B, page 20.

Back to contents

LiftMaster RSW12UL Wiring

LiftMaster RSW12UL Wiring Diagram

LiftMaster's installation manual shows the wiring diagram on page 46 (document 01-39378 revision B). This page does not reproduce the diagram; use the original LiftMaster manual for terminal-level connections. See Original LiftMaster Documentation.

Source: LiftMaster manual, 01-39378 revision B, page 46.

Wiring Accessories to the RSW12UL Control Board

All control wiring used to connect external devices to Class 2 circuits of the operator must be (QPTZ) Power-Limited Circuit Cables, Type CL2, CL2P, CL2R, or CL2X or other cable with equivalent or better electrical, mechanical, and flammability ratings. LiftMaster describes these control board inputs and outputs (pages 27 and 28):

RSW12UL control board inputs and outputs

Swipe sideways to see all columns.

Entrapment protection devices are wired as described in Wiring entrapment protection devices. LiftMaster lists an optional expansion board (Model K1D8387-1CC) that adds inputs for additional entrapment protection devices and controls; see Accessories.

Source: LiftMaster manual, 01-39378 revision B, pages 27 to 28.

Solar Panels (Appendix)

Solar panels are not provided (see Accessories). LiftMaster's solar appendix is on pages 41 to 44 of the manual.

Solar application requirements

• A minimum of one 10W solar panel (Model SP10W12V).
• A maximum of three 10W solar panels in parallel (Model SP10W12V).
• Battery harness (Model K94-37236).
• One 7AH battery or one 33AH battery.
• A heater cannot be used with a solar application.

Solar zones

Solar panel recommendations are based upon the average solar radiation and the temperature effects on batteries in the given zones as shown on the map in the manual (page 41). Local geography and weather conditions may require additional solar panels. Solar powered gate operator installations are not supported in northern climates due to cold weather and a reduced number of hours of sunlight during the winter months. The cycles/day ratings are approximations. Ratings vary based on gate construction, installation, and temperature. Solar panels cannot be installed in areas that experience long periods of heavy fog, lake effect snow, or rain.

Source: LiftMaster manual, 01-39378 revision B, page 41.

Solar usage guide

RSW12UL typical system standby battery current consumption (mA), 12V system (page 42)

Swipe sideways to see all columns.

Add up current draw by feature and accessory to determine total current draw. LiftMaster states that the use of photoelectric sensor heaters (models LMRRUL and LMTBUL) is NOT recommended in solar applications. For solar gate cycles per day by zone, panel wattage (10W, 20W as two 10W 12V panels in parallel, or 30W as three 10W 12V panels in parallel), battery size (7AH or 33AH), and battery current draw, see the cycles-per-day tables on page 42 of the manual. LiftMaster states that all numbers are estimates.

Position, wire length, and installation

The location of the panel(s) is critical to the success of the installation. In general, the panel(s) should be mounted using the provided angle bracket facing due south, in an area clear of all obstructions and shade from buildings and trees. If the panel(s) is not casting a shadow, the battery is not being charged. Tall trees or buildings that do not shade the solar panel(s) in the summer could shade them during the winter months when the sun sits lower in the sky.

RSW12UL solar panel maximum wire length (page 43)

Swipe sideways to see all columns.

Solar panel(s) MUST be installed facing south; use a compass to determine direction. LiftMaster's general instructions (your installation may vary slightly depending on the solar panel purchased):

1. Position the mounting bracket on the mounting surface. Mark and drill holes.
2. Secure the solar panel to the mounting bracket using the hex bolts, hex nuts and washers provided.
3. Secure the solar panel to the mounting surface using lag screws provided.

Wire the batteries and the solar panels

Solar panel applications require the Solar Harness Kit model K94-37236 (see Accessories). LiftMaster's wiring drawings for the batteries and the solar panels are on page 44 of the manual; after wiring, proceed to the Dual Gate section (if applicable) or the Adjustment section.

Source: LiftMaster manual, 01-39378 revision B, pages 43 to 44.

Back to contents

LiftMaster RSW12UL Adjustment

Limit and Force Adjustment

The operator is designed with electronic controls to make travel limit and force adjustments easy. The adjustments allow you to program where the gate will stop in the open and close position. The electronic controls sense the amount of force required to open and close the gate. The force is adjusted automatically when you program the limits but should be fine tuned using the REVERSAL FORCE dial on the control board to compensate for environmental changes. The limit setup LEDs (next to the SET OPEN and SET CLOSE buttons) indicate the status of the limits. The limits can be set using the control board or a remote control (see Limit Setup with a Remote Control); setting the limits with a remote control requires a 3-button remote control programmed to OPEN, CLOSE, and STOP. LiftMaster warns to keep clear of the moving arm while setting limits (page 45). The TEST buttons on the control board will not work until the limits have been set and the required entrapment protection devices are installed.

RSW12UL limit setup LEDs

Swipe sideways to see all columns.

Source: LiftMaster manual, 01-39378 revision B, page 21.

Source: LiftMaster manual, 01-39378 revision B, page 22.

Adjust the limits. After both limits are set and the operator is ready to run, one limit can be adjusted independently from the other by following steps 1 to 3 of the initial limits and force adjustment procedure.

Source: LiftMaster manual, 01-39378 revision B, page 22.

Limit Setup with a Remote Control

To set the limits using a remote control, you first need a 3-button remote control that has been programmed for OPEN, CLOSE, and STOP (see How to Program a Remote Control). For dual gate applications the limits will have to be set for each operator. The gate MUST be attached to the operator before setting the limits and force. Ensure the gate is closed.

LiftMaster's page 45 also describes setting the open limit only in the same way, using the OPEN button; see the original manual.

Source: LiftMaster manual, 01-39378 revision B, page 45.

Back to contents

LiftMaster RSW12UL Programming

How to Program a Remote Control

A total of 50 Security+ 2.0 remote controls or KPW250 keypads and 2 keyless entries (1 PIN for each keyless entry) can be programmed to the operator. When programming a third keyless entry to the operator, the first keyless entry will be erased to allow the third keyless entry to be programmed. When the operator's memory is full it will exit the programming mode and the remote control will not be programmed; the memory will need to be erased before programming any additional remote controls. If installing an 86LM to extend the range of the remote controls DO NOT straighten the antenna.

There are 3 different options for programming the remote control, depending on how you would like the remote control to function:

Source: LiftMaster manual, 01-39378 revision B, page 24.

How to Connect the RSW12UL to the LiftMaster Internet Gateway

The LiftMaster Internet Gateway is not provided. LiftMaster describes two ways to program the operator to the gateway.

Source: LiftMaster manual, 01-39378 revision B, page 24.

Constant Pressure Override and Erase Procedures

Constant Pressure Override (CPO)

Constant Pressure Override is for use with KPW5 and KPW250 keypads (not provided). The KPW5/KPW250 wireless commercial keypads are security keypads and can only be programmed to ONE gate operator (see the KPW5/KPW250 manual for complete programming instructions). The feature is intended to temporarily override a fault in the entrapment protection system, in order to operate the gate until the external entrapment protection device is realigned or repaired. Use the feature only in line of sight of the gate when no obstructions to travel are present. External entrapment protection devices include LiftMaster monitored photoelectric sensors and LiftMaster monitored wired and wireless edge sensors. Be sure to repair or replace these devices promptly if they are not working properly.

1. Enter a valid 4-digit PIN.
2. Press and hold # for 5 seconds to enter CPO. Continue to hold # to keep the operator in motion. A continuous tone will sound until the limit is met and/or # is released.
3. The operator will stop when either the operator reaches a limit or the user releases #.

Gate hold open feature

The gate hold open feature will disable the timer and keep the gate at the open limit. It can be activated through the reset switch (see Reset Switch) or through the KPW5 and KPW250 keypads (not provided). On a keypad: (1) enter a valid 4-digit PIN when the gate is at the open limit and the timer is running; (2) the operator will chirp, indicating the timer is canceled. To restart the gate, either re-enter the 4-digit PIN or activate a hard input or a programmed remote.

Erase all codes

1. Press and release the LEARN button (operator will beep and green XMITTER LED will light).
2. Press and hold the LEARN button again until the green XMITTER LED flashes and then release the button (approximately 6 seconds). All remote control codes are now erased.

Erase limits

1. To erase the limits, press and hold the SET OPEN and SET CLOSE buttons simultaneously (5 seconds) until both the SET OPEN and SET CLOSE LEDs blink rapidly and the operator beeps.
2. Release the buttons and the SET OPEN and SET CLOSE LEDs will blink slowly, indicating the limits will need to be set.

Remove and erase monitored entrapment protection devices

1. Remove the entrapment protection device wires from the terminal block.
2. Press and release the SET OPEN and SET CLOSE buttons simultaneously. The SET OPEN and SET CLOSE LEDs will turn on (entering learn limit mode).
3. Press and release both the SET OPEN and SET CLOSE buttons again to turn off the SET OPEN and SET CLOSE LEDs (exiting learn limit mode).

Source: LiftMaster manual, 01-39378 revision B, page 24.

Dual Gate Settings

LiftMaster recommends that all accessories and board configurations are set on the primary operator (page 38).

LiftMaster dual gate settings for two RSW12UL operators (page 38)

Swipe sideways to see all columns.

Source: LiftMaster manual, 01-39378 revision B, page 38.

Back to contents

LiftMaster RSW12UL Operation

RSW12UL Control Board Overview

LiftMaster identifies these control board features (numbers match the manual's callouts on page 25):

1. SET OPEN button: sets the OPEN limit (see Limit and Force Adjustment).
2. SET CLOSE button: sets the CLOSE limit.
3. MOVE GATE buttons: open or close the gate when the operator is in limit setting mode.
4. BATT FAIL: when AC power is OFF and battery voltage is critically low the gate will latch at a limit until AC power is restored or battery voltage increases. The option select switch set to OPEN forces the gate to automatically open and then latch at the OPEN limit until AC power is restored or battery voltage increases. The option select switch set to CLOSE forces the gate to latch at the CLOSE limit if at the CLOSE limit or on the next CLOSE command until AC power is restored or battery voltage increases. Constant pressure on a hard command input overrides to open or close the gate. Critically low battery is less than 11.5 V.
5. BIPART DELAY switch: the LOCK/BIPART DELAY switch is used only for dual gates (see Bipart delay and synchronized close).
6. LEARN button: used for programming remote controls and the network.
7. TIMER-TO-CLOSE (TTC) dial: can be set to automatically close the gate after a specified time period. The TTC is factory set to OFF. If the TTC is set to OFF, the gate will remain open until the operator receives another command from a control. Rotate the dial to the desired setting; the range is 0 to 180 seconds, and 0 seconds is OFF. Any radio command, single button control, or CLOSE command on the control board before the TTC expires will close the gate. The TTC is reset by any signals from the open controls, loops, close edges, and close photoelectric sensors (IRs).
8. REVERSAL FORCE dial: fine tunes the force (see fine tune the force).
9. TEST BUTTONS: operate the gate (OPEN, STOP and CLOSE).
10. STATUS LEDs: indicate the status of the operator (see the Control Board LEDs).
11. DIAGNOSTICS display: shows the operator type, firmware version, and codes. The operator type displays as "SG" followed by a "12", which indicates the operator type as RSW12UL. The firmware version shows after the operator type (example "1.2"). See Diagnostic Codes.
12. BACKDRIVE switch: set to MANUAL, it allows the gate to be manually pushed open or closed if there is a loss of AC and battery power. Set to SECURE, it makes the gate difficult to push open or closed if there is a loss of AC and battery power.

Source: LiftMaster manual, 01-39378 revision B, page 25.

Manual Disconnect

1. Press the reset switch to RESET/DISCONNECT.
2. Release the handle on the operator arm to allow the gate to be opened and closed manually.

On a dual gate application the handle must be released on both operators. To resume normal function, tighten the handle by pushing it down.

Source: LiftMaster manual, 01-39378 revision B, page 26.

RSW12UL Reset Switch

The reset switch is located on the front of the operator and serves several functions (LiftMaster, page 26). Toggling the reset switch will stop a moving gate during a normal open/close cycle, like a stop button; the operator does not need to be reset after doing this. The reset switch will disable the gate in the present position and will energize the solenoid lock for two minutes and disable the maglock for two minutes. Press the reset button to shut off the operator alarm and reset the operator (see Operator Alarm).

Source: LiftMaster manual, 01-39378 revision B, page 26.

RSW12UL Operator Alarm

If a contact sensor detects an obstruction twice consecutively, the alarm will sound (up to 5 minutes) and the operator will need to be reset. When the inherent force of the operator (RPM/current sensor) detects any of the following twice consecutively, the alarm will sound (up to 5 minutes) and the operator will need to be reset:

1. The operator arm or gate is incorrectly installed.
2. The gate does not meet specifications.
3. Gate hinges are too tight or broken and the gate is not moving freely.
4. The gate is moving and a car pushes the gate.
5. A foreign object is on the gate frame while the gate is moving.
6. The gate hits the driveway or curb and gets stuck or bent in an awkward position.

Remove any obstructions, then press the reset button to shut off the alarm and reset the operator. After the operator is reset, normal functions will resume. The operator alarm will beep 3 times with a command if the battery is low (see battery problems).

Source: LiftMaster manual, 01-39378 revision B, page 26.

RSW12UL Remote Control Operation

Single button control (SBC) functionality. Once the remote control has been programmed, the operator will operate as follows: when the gate is in the closed position, activation of the remote control button will open the gate. During the open cycle another activation of the remote control will stop the gate and the next activation of the remote control will close the gate. When the gate is in the open position, activation of the remote control button will close the gate. If the remote control is activated while the gate is closing, the gate will stop and the next activation will open the gate. See How to Program a Remote Control for the other programming options.

Source: LiftMaster manual, 01-39378 revision B, page 26.

Back to contents

LiftMaster RSW12UL Troubleshooting

This section follows the troubleshooting chart in LiftMaster's RSW12UL installation manual (document 01-39378 revision B). The full chart below keeps LiftMaster's wording; the problem-specific sections after it restate rows of the chart in task order and are condensed. Disconnect power (AC or solar and battery) before servicing the operator, and replace a fuse only with one of the same type and rating.

• Gate will not open or does not move
• Gate opens but will not close
• Operator has no power
• Remote control does not operate the gate
• Safety device problems
• Battery and solar problems
• Complete troubleshooting chart (23 symptoms)
• Control board LEDs

LiftMaster RSW12UL Troubleshooting Chart

LiftMaster RSW12UL troubleshooting chart (letters in each row correspond except where the documentation note says otherwise)

Swipe sideways to see all columns.

Source: LiftMaster manual, 01-39378 revision B, pages 35 to 37.

Gate Will Not Open or the LiftMaster RSW12UL Does Not Move

If a LiftMaster RSW12UL gate will not open or the operator does not move, LiftMaster's troubleshooting chart separates several conditions. Find the one that matches what you see.

The control board powers up, but the motor does not run

LiftMaster lists these possible causes and checks (chart row):

• Reset switch is stuck: Check reset switch.
• Stop button active or jumper not in place for stop circuit: Check Stop button is not "stuck on", or verify that the stop button is a normally closed circuit, or put a jumper on the stop circuit.
• If on battery power only, low or dead batteries: Charges batteries by AC or solar power or replace batteries.
• Open or Close input active: Check all Open and Close inputs for a "stuck on" input.
• Entrapment Protection Device active: Check all Entrapment Protection Device inputs for a "stuck on" sensor.
• Vehicle loop detector or probe active: Check all vehicle detector inputs for a "stuck on" detector.
• Defective control board: Replace defective control board.

The gate closes but will not open

LiftMaster lists these possible causes and checks (chart row):

• Vehicle loop detector active: Check all vehicle detector inputs for an active detector.
• Low battery with LOW BATT option set to CLOSE: Check if AC power is available. If no AC power, then running on batteries and battery voltage must be 11.5 Vdc or higher. Charge batteries by AC or solar power or replace batteries.

The operator does not respond to a command

For wired controls such as Open, Close, or SBC, see the chart row. For remotes and transmitters, see remote control problems.

The gate moves but limits cannot be set correctly

See the chart row for "cannot set correct limits" and the chart row for "does not fully open or fully close when setting limits." See Limit and Force Adjustment.

The gate stops during travel and reverses immediately

LiftMaster lists these possible causes and checks (chart row):

• Control (Open, Close) becoming active: Check all Open and Close inputs for an active input.
• Vehicle loop detector active: Check all vehicle detector inputs for an active detector.
• Low battery voltage: Battery voltage must be 11.5 Vdc or higher. Charge batteries by AC or solar power or replace batteries.

Source: LiftMaster manual, 01-39378 revision B, page 35.

Gate Opens but Will Not Close on the LiftMaster RSW12UL

When a LiftMaster RSW12UL gate opens but will not close with a transmitter or the Timer-to-Close, LiftMaster lists the following possible causes and checks (chart row):

• Open control active: Check all Open inputs for an active input.
• Vehicle loop detector active: Check all vehicle detector inputs for an active detector.
• Loss of AC power with AC FAIL set to OPEN: Check AC power and AC Fail option setting.
• Low battery with LOW BATT set to OPEN: Check if AC power is available. If no AC power, then running on batteries and battery voltage must be 11.5 Vdc or higher. Charge batteries by AC or solar power or replace batteries.
• Fire Dept input active: Check Fire Dept input.
• Timer-to-Close not set: Check Timer-to-Close (TTC) setting.
• Close Entrapment Protection Device active: Check all Entrapment Protection Device inputs for an active sensor.

If the display shows a code, see code 60 and codes 61 to 66 and 70 to 75 for entrapment protection inputs.

Source: LiftMaster manual, 01-39378 revision B, page 35.

LiftMaster RSW12UL Has No Power or the Display Is Off

If the LiftMaster RSW12UL does not run and the diagnostic display is not on, LiftMaster lists these possible causes and checks (chart row):

1. No power to control board: Check AC and battery power.
2. Open fuse: Check fuses.
3. If on battery power only, low or dead batteries: Charge batteries by AC or solar power or replace batteries.
4. Defective control board: Replace defective control board.

For battery connections see Batteries.

Source: LiftMaster manual, 01-39378 revision B, page 35.

LiftMaster RSW12UL Remote Control Does Not Operate the Gate

For a wireless control or transmitter that does not operate a LiftMaster RSW12UL gate, LiftMaster lists these causes and checks (chart row):

1. Check XMITTER LED when wireless control is active: Activate wireless control and check XMITTER LED is on. Re-learn wireless control/transmitter to control board. Replace wireless control as needed.
2. Stop button is active: Check Stop button is not "stuck on".
3. Reset button is stuck: Check Reset button.
4. Poor radio reception: Check if similar wired control operates correctly. Check if wireless controls works properly when within a few feet of operator. Check operator's antenna and antenna wire. Check other wireless controls or devices.

To re-learn a remote, see How to Program a Remote Control. If the operator's memory is full, LiftMaster notes that the memory must be erased before more remote controls can be programmed (Erase All Codes).

Source: LiftMaster manual, 01-39378 revision B, page 35.

LiftMaster RSW12UL Safety Device Problems

LiftMaster's chart covers these safety device symptoms:

• Photoelectric sensor does not stop or reverse the gate (row): Incorrect photoelectric sensor wiring: Check photoelectric sensor wiring. Retest that obstructing photoelectric sensor causes moving gate to stop, and may reverse direction. Defective photoelectric sensor: Replace defective photoelectric sensor. Retest that obstructing photoelectric sensor causes moving gate to stop, and may reverse direction.
• Edge sensor does not stop or reverse the gate (row): Incorrect edge sensor wiring: Check edge sensor wiring. Retest that activating edge sensor causes moving gate to stop and reverse direction. Defective edge sensor: Replace defective edge sensor. Retest that activating edge sensor causes moving gate to stop and reverse direction.
• Obstruction does not cause the gate to stop and reverse (row): Force adjustment needed: Refer to the Adjustment section to conduct the obstruction test and perform the proper force adjustment that is needed.
• Alarm sounds for 5 minutes or with a command (row): Double entrapment occurred (two obstructions within a single activation): Check for cause of entrapment (obstruction) detection and correct. Press the reset button to shut off alarm and reset the operator.

Source: LiftMaster manual, 01-39378 revision B, page 36.

LiftMaster RSW12UL Battery and Solar Problems

The operator alarm beeps 3 times with a command when the battery is low (see chart row). Critically low battery is less than 11.5 V (see BATT FAIL). For solar operators, LiftMaster's chart has two rows:

• Alarm beeps three times with a command (row): Low battery: Check if AC power is available. If no AC power, then running on batteries and battery voltage must be 11.5 Vdc or higher. Charge batteries by AC or solar power or replace batteries.
• Solar operator not getting enough cycles per day (row): Insufficient panel wattage: Add more solar panels. Excessive accessory power draw: Reduce the accessory power draw by using LiftMaster low power accessories. Old batteries: Replace batteries. Solar panels are not getting enough sunlight: Relocate the solar panels away from obstructions (trees, buildings, etc.).
• Solar operator, insufficient standby time (row): Insufficient panel wattage: Add more solar panels. Excessive accessory power draw: Reduce the accessory power draw by using LiftMaster low power accessories. Battery capacity too low: Use batteries with higher amp hour (AH) rating.

Source: LiftMaster manual, 01-39378 revision B, pages 36 to 37.

RSW12UL Control Board LEDs

RSW12UL control board status LEDs

Swipe sideways to see all columns.

RSW12UL control board input LEDs

Swipe sideways to see all columns.

Source: LiftMaster manual, 01-39378 revision B, page 34.

Back to contents

LiftMaster RSW12UL Diagnostic and Error Codes

The LiftMaster RSW12UL control board shows diagnostic codes on its display. Some codes are saved in the code history and some are not; a code that is not saved briefly appears on the display as it occurs, then disappears. When cycling or disconnecting power (AC/DC) to the control board, LiftMaster recommends unplugging the J15 plug.

How to Read RSW12UL Diagnostic Codes

Source: LiftMaster manual, 01-39378 revision B, page 34.

LiftMaster RSW12UL Diagnostic Code Table

Each code below has its own anchor (for example code 60). The wording is LiftMaster's. LiftMaster's table is color-coded by category (LiftMaster system, installed system, informational, external entrapment protection, inherent entrapment protection); see the original table for the color key. The manual groups several codes that share one solution; they are listed separately here.

• 31
• 34
• 35
• 36
• 37
• 38
• 40
• 41
• 42
• 43
• 44
• 45
• 46
• 50
• 53
• 54
• 60
• 61
• 62
• 63
• 64
• 65
• 66
• 67
• 68
• 69
• 70
• 71
• 72
• 73
• 74
• 75
• 80
• 81
• 82
• 83
• 84
• 91
• 93
• 99

LiftMaster RSW12UL diagnostic codes (display shows 31 to 99; code 00 is listed in the manual table)

Swipe sideways to see all columns.

Back to contents

LiftMaster RSW12UL Maintenance

LiftMaster's maintenance instructions for the RSW12UL are on pages 29 and 30 of the manual (document 01-39378 revision B). Disconnect all power (AC, solar, battery) to the operator before servicing.

Important Safety Instructions

Source: LiftMaster manual, 01-39378 revision B, page 29.

Maintenance Chart

LiftMaster RSW12UL maintenance chart: check at least once every month, 6 months, or 3 years

Swipe sideways to see all columns.

LiftMaster's notes: severe or high cycle usage will require more frequent maintenance checks. It is suggested that while at the site, voltage readings be taken at the operator. Using a digital voltmeter, verify that the incoming voltage to the operator is within ten percent of the operator's rating.

Batteries

Batteries will degrade over time depending on temperature and usage. The operator alarm will beep 3 times with a command if the battery is low. Batteries do not perform well in extremely cold temperatures. For best performance, the batteries should be replaced every 3 years. Use only LiftMaster part 29-NP712 for replacement batteries. The batteries contain lead and need to be disposed of properly. The operator comes with one 7AH battery. One 33AH battery (A12330SGLPK), 33AH battery harness (K94-37236) with additional battery tray (K10-36183) may be used in place of the 7AH battery (page 30). Shop gate operator batteries.

Source: LiftMaster manual, 01-39378 revision B, page 30.

Back to contents

LiftMaster RSW12UL Repair and Replacement Parts

The tables below list the RSW12UL repair parts and part numbers as printed by LiftMaster on page 47 of manual 01-39378 revision B, including the parts LiftMaster lists as "not shown." LiftMaster prints "Cludge" in the names of two parts (the cover and the assembly); the names below keep that spelling as printed.

Browse by category: gate operator parts | control boards | motors | batteries | gate operator accessories

LiftMaster RSW12UL repair parts as listed by LiftMaster (page 47)

Swipe sideways to see all columns.

Additional RSW12UL parts listed by LiftMaster as "not shown" in the diagram (page 47)

Swipe sideways to see all columns.

Source: LiftMaster manual, 01-39378 revision B, page 47.

Back to contents

Compatible RSW12UL Accessories

LiftMaster's manual lists the following accessories for the RSW12UL (pages 48 and 49). Model numbers are LiftMaster's; the links go to related All Security Equipment categories and do not by themselves confirm that we stock an item or that it fits your operator.

Entrapment Protection Devices

LiftMaster monitored devices are required for UL 325 entrapment protection (see Install Entrapment Protection). Shop photoelectric sensors and edge sensors.

• LMTBUL, monitored through beam photoelectric sensor
• LMRRUL, monitored retro-reflective photoelectric sensor
• CPS-UN4 and CPSUN4G, LiftMaster Monitored Commercial Protector System
• LMWEKITU, monitored wireless edge kit (transmitter and receiver)
• LMWETXU, monitored wireless edge transmitter
• L50 (large profile monitored edge, 82 ft. roll) and L50E (large profile ends kit, 10 pair)
• S50 (small profile monitored edge, 82 ft. roll) and S50E (small profile ends kit, 10 pair)
• L50CHP (plastic channel, 8 ft., pack of 10) and L50CHAL (aluminum channel, 10 ft., pack of 8)
• ETOOL, edge cutting tool

Remote Controls and Access Devices

LiftMaster's remote controls are compatible with operators manufactured by LiftMaster after 1993. Shop gate remote controls and keypads.

• 893MAX, 3-button remote control (includes visor clip)
• 890MAX, 3-button mini-remote control (includes key ring and fastening strip)
• 892LT and 894LT, Security+ 2.0 learning remote controls
• 877MAX, keyless entry (4-digit code keypad)
• KPW250, wireless commercial keypad (Security+ 2.0 compatible)
• STAR1000, commercial access control receiver (up to 1,000 devices)
• 86LM, remote antenna extension kit
• 828LM, LiftMaster Internet Gateway (ASE product page)

Operator Accessories

• K1D8387-1CC, expansion board (additional programming features including external loops, plug-in loops, auxiliary relays, and inputs for additional controls and entrapment protection devices) and K94-34778, wire harness between the main control board and the expansion board
• LOOPDETLM, plug-in loop detector (low power; plugs into the existing control board). Search for LOOPDETLM or browse loop detectors.
• LD7LP, low power loop detector mounted and wired separately inside the control box
• CP3, vehicle sensing probe
• MG1300, outdoor magnetic lock with transformer, junction box, mounting plate and hardware (not for use with solar applications; must be powered separately). Shop magnetic locks.
• HTR, heater (keeps the gearbox and batteries at a suitable temperature below -4°F (-20°C); the thermostat MUST be set between 45°F and 60°F (7°C and 15.5°C); powered by 110 to 250 Vac)
• SP10W12V (10 Watt, 12V) and SP20W12V (20 Watt, 12V), solar panel kit (60W maximum for 24 Vdc operators and 30W maximum for 12 Vdc operators; requires a 33AH battery harness). Browse solar panels and accessories.
• 40-39235, warning sign

Batteries and Battery Hardware

• 29-NP712 (1) and K74-30762 (2), standard 7AH 12 Vdc batteries (reuse existing harnesses)
• A12330SGLPK, upgrade 33AH 12 Vdc battery (ideal for solar applications and extended battery backup; two required)
• K10-36183, battery tray (for use with 33AH batteries)
• K94-37236, universal solar wire harness kit (for 7AH and 33AH applications). Search for K94-37236.

Two identical 12 Vdc batteries are required for each gate operator, according to LiftMaster's accessories page. Do not mix 7AH and 33AH batteries within a gate operator. Shop gate operator batteries.

Source: LiftMaster manual, 01-39378 revision B, pages 48 to 49.

Back to contents

Frequently Asked Questions About the LiftMaster RSW12UL

What size gate can the RSW12UL move?

Per the manual (page 7), the maximum gate weight depends on gate length: 400 lbs. (181.4 kg) at 16 ft (4.9 m), 600 lbs. (272.2 kg) at 12 ft (3.7 m), 700 lbs. (317.5 kg) at 10 ft (3 m), 800 lbs. (362.9 kg) at 8 ft (2.4 m), and 1000 lbs. (543.5 kg) at 6 ft (1.8 m). The 90 degree travel time is under 17 seconds, the maximum travel range is 115 degrees, and the maximum daily cycle rate is 250 cycles per day. See Specifications.

How do I set the limits?

Press SET OPEN and SET CLOSE together to enter limit setting mode, move the gate with the MOVE GATE buttons and press SET OPEN or SET CLOSE at each limit, then cycle the gate open and close to set the force automatically (page 21). Limits can also be set with a 3-button remote control (page 45). See Limit and Force Adjustment.

How do I open the gate by hand?

Press the reset switch to RESET/DISCONNECT, then release the handle on the operator arm so the gate can be opened and closed manually. On a dual gate application the handle must be released on both operators. To resume normal function, tighten the handle by pushing it down. Use the manual disconnect only when the gate is not moving. See Manual Disconnect.

What entrapment protection does the RSW12UL need?

Per the manual, swing gate operators require the installation of the first external monitored entrapment protection device to function, and the installer must ensure that all entrapment zones are protected in both the open and close gate cycles (page 14). See Install Entrapment Protection.

What battery does the RSW12UL use?

The operator comes with one 7AH battery; a 33AH battery (A12330SGLPK) with the 33AH harness (K94-37236) and a battery tray (K10-36183) may be used instead. LiftMaster says to use only part 29-NP712 for replacement batteries and recommends replacing them every 3 years. See Batteries.

What warranty does the RSW12UL have?

Per the manual, LiftMaster's warranty is a three year limited warranty from the date of purchase. The warranty terms, including exclusions, are printed on page 50 of the manual.

Where is the wiring diagram?

The standard control box wiring diagram is on page 47 and the large metal control box wiring diagram is on page 48 of LiftMaster's installation manual. See the wiring diagram section.

#DOCS

Back to contents

Original LiftMaster RSW12UL Documentation

This HTML resource is presented by All Security Equipment, is not a LiftMaster publication, and does not replace the original manufacturer documentation. It is based on LiftMaster's RSW12UL installation manual, document 01-39378, revision B (© 2018 The Chamberlain Group, Inc.).

• LiftMaster RSW12UL Installation Manual, English (01-39378B): the document this page is based on.
• LiftMaster RSW12UL product page at All Security Equipment

Check LiftMaster's product page for the current revision before relying on any document, because LiftMaster may update them.

Back to contents

Related LiftMaster Resources

• LiftMaster RSW12UL product page at All Security Equipment
• Swing gate openers and operators and LiftMaster products
• Gate operator parts, gate operator accessories, and battery back-ups
• Gate operator articles and the Help Center

Other LiftMaster gate operator manuals on this site: LiftMaster CSL24UL instruction manual | LiftMaster RSL12UL instruction manual | LiftMaster HDSL24UL instruction manual | LiftMaster INSL24UL instruction manual | LiftMaster IHSL24UL instruction manual | LiftMaster SL3000UL instruction manual