LiftMaster SL3000501UL & SL3000101UL Instruction Manual

Elite Series Commercial High-Traffic AC Slide Gate Operator Installation Manual for Model SL3000UL, available as SL3000101UL (1 HP Single Phase) and SL3000501UL (1/2 HP Single Phase). The operator requires a LiftMaster external monitored entrapment protection device to be installed in all entrapment zones.

• This product is to be installed and serviced by a trained gate systems technician only.
• This model is for use on vehicular passage gates ONLY and not intended for use on pedestrian passage gates.
• This model is intended for use in Class I, II, III, and IV vehicular slide gate applications.
• Visit LiftMaster.com to locate a professional installing dealer in your area.
• This gate operator is compatible with MyQ® and Security+ 2.0® accessories.

LiftMaster, 300 Windsor Drive, Oak Brook, IL 60523.

Warning symbols on mechanical and electrical hazards alert you to the risk of serious injury or death. Before installing, operating, or maintaining this operator, read and fully understand this manual and follow all safety instructions. Only an Authorized Service Technician should attempt repair or service.

WARNING: This product can expose you to chemicals including lead, which are known to the State of California to cause cancer or birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov.

Usage Class

• Class I: Residential vehicular gate for one- to four-family residences.
• Class II: Commercial/general access gate for multi-family housing, hotels, retail, or other buildings servicing the public.
• Class III: Industrial/limited access gate for factories, loading docks, or other non-public locations.
• Class IV: Restricted access gate for guarded industrial locations such as airport security areas.

UL 325 Entrapment Protection Requirements

A slide gate entrapment zone exists if, at any point during travel, the gap between the gate and any opposing fixed edge or surface, such as posts, walls, pillars, columns, or the operator itself, is less than 16 inches (406 mm) in a location up to 6 feet above grade.

A minimum of two independent monitored entrapment protection devices is required at each entrapment zone. This vehicular slide gate operator will operate only after installation of a minimum of two independent monitored devices in each direction: two in the open direction and two in the close direction. Devices are independent only if they are different types. This operator includes one inherent (built-in) device; the installer must add the others. Acceptable device types are inherent, LiftMaster monitored external photoelectric sensors, and LiftMaster monitored external edge sensors.

Gate systems are made up of many component parts, and the operator is only one of them. Installers must account for the hazards of each individual application. For a slide gate, all openings must be guarded or screened from the bottom of the gate to a minimum of 6 feet above the ground so a 2-1/4 inch diameter sphere cannot pass through, both in the gate and in the portion of the adjacent fence that the gate covers in the open position. Exposed pinch points must be eliminated or guarded, including guards for exposed rollers.

Pedestrians must always be provided a separate access opening located so they never come in contact with the vehicular gate during its travel. Permanently mounted access controls must sit at least 6 feet from any moving gate part. A minimum of two warning signs must be installed so each is visible from the side of the gate where it is mounted. Contact sensors should be located where the risk of entrapment exists, such as the leading edge, trailing edge, and post mounted both inside and outside of the gate. Stop and Reset controls must be in the line-of-sight of the gate, and activating the reset control must not cause the operator to start.

Gates should be installed according to ASTM F2200. Gates must not fall over more than 45 degrees from vertical if detached from their hardware, must have smooth bottom edges with no protrusions exceeding 0.5 inches, and must not move under gravity alone if the operator is disconnected.

For Class I, II, and III horizontal slide gates: all weight-bearing exposed rollers 8 feet or less above grade must be guarded or covered; all openings must be guarded or screened to prevent a 2-1/4 inch sphere from passing through; the gap between a fixed object nearest the roadway (such as a gate support post) and the gate frame in the fully open or fully closed position must not exceed 2-1/4 inches (other fixed objects more than 16 inches from the gate frame are exempt); positive stops are required at the fully open and fully closed positions; and the gate must have enough lateral stability to enter a receiver guide. Class IV slide gates require guarded rollers and positive stops.

The carton includes the gate operator, cover, two keys, two warning signs and a warranty card, a LiftMaster Monitored Retro-Reflective Photoelectric Sensor kit (Model LMRRUL), and a 5 ft edge sensor kit. Not shown: documentation packet, #41 chain (25 feet), and the eye bolt kit. Tools needed: a 1/2" wrench for the 5/16" cover screw, a 3/4" wrench for the 1/2" concrete anchors, phillips and flat head screwdrivers, and cable cutters and strippers.

Operator Specifications

Usage Classification: Class I, II, III, & IV. Main AC Supply: SL3000501UL (1/2 HP) 120 Vac, 6 Amps (12 Amps including accessory outlets); SL3000101UL (1 HP) 120 Vac, 12 Amps (18 Amps including accessory outlets). With the optional Transformer Kit (3PHCONV) installed in the field, the operator is rated 208/240/480/575 Vac, 4.8/4.2/2.1/1.7 A, 60 Hz, 1 PH. Accessory Power: 24 Vdc, 500 mA max. Maximum Gate Weight: SL3000501UL 1,000 lbs, SL3000101UL 2,000 lbs. Gate Travel Distance: 4 feet minimum, 52 feet maximum. Maximum Gate Travel Speed: 1 foot/second. Maximum Daily Cycle Rate and Duty Cycle: Continuous. Operating Temperature: -20°C to 60°C (-4°F to 140°F) without heater, -40°C to 60°C (-40°F to 140°F) with optional heater. Expansion Board: Provided.

External entrapment protection device inputs: the main board accepts up to 2 close entrapment protection devices and 1 open entrapment protection device. The expansion board adds up to 3 devices configurable to either direction, plus up to 4 edge sensors when using wireless edge sensor kit model LMWEKITU. The manual includes dimensioned drawings of the operator and cover; see the official PDF.

Check national and local building codes before installation. Trench and install conduit before pouring the concrete pad or setting the post; contact underground utility locating companies first, and use UL-approved conduit for low and high voltage. Consider the operator placement before installing the pad or post. Vehicle loops, while not required, are recommended for vehicles 14 feet or longer to keep the gate open while a vehicle blocks its path. Install a warning sign (two provided) on the inside and outside of the property, where easily visible.

Safety catch rollers: install catch rollers with safety covers on the side of a post or wall, with a minimal distance of half an inch between the rollers and the gate. Do not use a gate catch post. Because the coasting distance can change with temperature, a catch post in front of the gate's path may cause the gate to hit the post in certain conditions.

CAUTION: To avoid damaging gas, power, or other underground utility lines, contact underground utility locating companies BEFORE digging more than 18 inches deep. Do NOT touch the heater when its switch is on, because the heater may be hot.

Two layouts are available. In a standard installation, the operator sits near the front roller of the gate. In a rear installation, the operator sits near the back of the gate in the open position. For either layout: lay out the concrete pad, install the electrical conduit, and pour a concrete pad (reinforced concrete is recommended). The drawing shows a pad of 24 inches by 24 inches sitting 6 inches above ground and below the frost line (check all national and local codes), positioned 1 to 2 inches from the gate line. See the official PDF for the full layout drawing.

Attach the operator to the concrete pad with appropriate fasteners; the manual shows four concrete anchors, 1/2 inch by 3-1/2 inch. The operator should be near the front roller of the gate or near the back of the gate (in the open position). The space between the gate and the output sprocket must be a minimum of 4 inches. The mounting footprint measures about 10.3 inches by 10.4 inches. An alternative to a concrete pad is to post mount the operator using the post-mounting plate (Model MPEL), see Accessories.

DO NOT run the operator until instructed.

Standard Installation

1. Manually open the gate and line up the front bracket so the chain will be level with the idler pulley and parallel to the ground, then weld the front bracket in this position. 2. Manually close the gate and line up the rear bracket the same way, then weld it in place. 3. Route the chain through the operator. 4. Connect the chain to the brackets using the eye bolt hardware; the chain should not be too tight or have excessive slack. 5. Remove the pin from the vent plug on the gear box.

Rear Installation

This layout requires two extra idler pulleys, and all exposed pinch points must be guarded. 1. Move the back pulley to the bottom hole in the operator. 2. Manually close the gate and align the bottom bracket so the chain is level with the bottom idler pulley and parallel to the ground, then weld it. 3. Align the top bracket so the chain is level with the top idler pulley and parallel to the ground, then weld it. 4. Route the chain through the operator. 5. Connect the chain to the brackets with the eye bolt hardware. 6. Remove the pin from the vent plug on the gear box. The idler pulley MUST have a safety cover.

NOTE: The chain should have no more than 1 inch (2.5 cm) of sag for every 10 feet (3 m) of chain length.

WARNING: ALL gate operator systems REQUIRE two independent entrapment protection systems for each entrapment zone. Entrapment protection devices MUST be located to protect in BOTH the open and close gate cycles, between the moving gate and RIGID objects such as posts, walls, pillars, columns, or the operator itself.

Slide gate operators require a minimum of two external monitored entrapment protection devices to function, one in the open direction and one in the close direction. It is the installer's responsibility to make sure ALL entrapment zones are protected, and LiftMaster monitored external devices MUST be used with LiftMaster operators to meet UL325. Test ALL entrapment protection devices after completing installation. Any gap larger than 2-1/4 inches between the gate and fixed objects must be protected; install edge sensors where the gap between the post and the gate creates an entrapment zone.

The control board has dedicated inputs: CLOSE EYES/INTERRUPT for photoelectric sensors in the close direction, CLOSE EDGE for edge sensors in the close direction, and OPEN EYES/EDGE for sensors in the open direction. The expansion board adds EYE ONLY and EYE/EDGE inputs that can be switched to either direction. Only one monitored device may be wired to each input.

Install the earth ground rod within 3 feet of the operator using a single, whole piece of wire, never spliced. Improper grounding reduces remote control range and increases susceptibility to lightning and surge damage.

For dual gate applications, power must be connected to each operator, and main power and control wiring must always run in separate conduits. An optional Transformer Kit (Model 3PHCONV) converts 208/240/480/575 Vac input to a 120 Vac output. All control wiring to Class 2 circuits must be Power-Limited Circuit Cable Type CL2, CL2P, CL2R, or CL2X or better. If you use an external receiver, use shielded wire and mount the receiver away from the operator to avoid interference.

Power wiring: 1. Make sure the AC power switch on the operator is OFF. 2. Turn off the AC power at the main breaker. 3. Run the AC power wires to the junction box on the operator. 4. Remove the junction box cover. 5. Connect the green wire to the earth ground rod and AC ground using a wire nut (the earth ground rod can be grounded to the chassis). 6. Connect the white wire to NEUTRAL. 7. Connect the black wire to HOT. 8. Replace the junction box cover without pinching wires. 9. Turn on the AC power at the breaker. 10. Turn on the AC power switch on the operator.

Maximum wire length for the standard operator. Chart assumes copper wire, 65°C, 5% drop. Transformer kit lengths are listed in the official PDF.

Dual gate communication is either wired or wireless, never both at once.

Wireless: choose a primary operator and program all wireless accessories to it. Press and release LEARN on the primary (green XMITTER LED lights, 180 second timeout), press LEARN again (yellow NETWORK LED lights), then press the OPEN test button to assign it as network primary. On the second operator, press LEARN twice, then press the CLOSE test button to assign it as network second. Both operators beep and the NETWORK LEDs turn off when successful. To deactivate, press LEARN twice, hold LEARN for 5 seconds until the NETWORK LED blinks and turns off, and repeat on the other operator.

Wired: disconnect ALL power to the operators, trench across the driveway (use PVC conduit), and connect shielded twisted pair cable to the Com Link terminals on each control board (Com Link A to A, B to B), grounding the shield to the chassis ground of one operator, then reconnect all power. 22 AWG cable is rated up to 200 feet; 18 AWG for 200 to 1,000 feet; wire must be rated 30 Volt minimum.

Set the accessories and board configuration on the primary operator, and use the Bipart Delay dial as described in the Control Board Overview and the Dual Gate Settings sections.

Before installing the cover, follow the instructions in the Adjustment section to set the handing and limits. Slide the cover over the operator, align the hole in the cover with the threaded hole in the operator's chassis, and secure the cover with the provided screw. Per the Site Preparation section, install the two provided warning signs where easily visible on the inside and outside of the property.

Never increase force beyond the minimum needed to move the gate, and never use force to compensate for a binding or sticking gate. If one control (force or travel limits) is adjusted, the other may also need adjustment, and the safety reversal system MUST be tested after any adjustment: the gate must reverse on contact with an object. Unlike the DC operators, this AC operator uses mechanical limit switches adjusted with limit nuts or cams, plus a handing setting that tells the control board which way the gate opens. The test buttons will not work until the handing is set. For dual gate applications the limits must be set for each operator, with the gate attached to the operator first.

Set the Handing

OPEN RIGHT is used if the operator is installed on the right side of the driveway when looking out of the property; OPEN LEFT is used if it is on the left. 1. Make sure both the OPEN LEFT and OPEN RIGHT LEDs are flashing; if not, press and hold both handing buttons until both LEDs start to flash and the operator beeps. 2. Press and release either the OPEN RIGHT or OPEN LEFT button depending on which direction the gate should open; the matching handing LED turns solid. To relearn the handing, repeat these steps.

Set the Limits

1. Make sure the gate is closed. 2. Press and release the OPEN test button to open the gate. 3. Press the STOP test button when the desired OPEN limit is reached, then adjust the limit nut or cam so it contacts the OPEN limit switch at this position; if the gate stops early, move the nut or cam to allow more travel. 4. Press and release the CLOSE test button to close the gate. 5. Press STOP when the desired CLOSE limit is reached and adjust the limit nut or cam to contact the CLOSE limit switch. For slide gates, make sure the gate moves at least four feet between the open and close limits.

Set the Force and Run Distance

1. Press the OPEN test button to open the gate. 2. Press and release both the OPEN LEFT and OPEN RIGHT handing buttons. 3. Press the handing button below the solid LED. 4. Run the operator through one full cycle using the test buttons; the initial forces and run distance are set during this cycle.

Readjust the limits: follow the Set the Limits and Set the Force and Run Distance steps again. It is important that the force and run distance are set after every limit readjustment.

Fine tune the force: the REVERSAL FORCE dial is set to minimum at the factory. Settings 1 to 3 are fixed forces that do not adjust for gate wear or temperature; settings 4 to 10 automatically increase force to compensate for wear or temperature changes. The force should be high enough that the gate will not reverse by itself or cause nuisance interruptions, but low enough to prevent serious injury. If the gate stops or reverses before reaching a limit, turn the dial slightly clockwise.

Obstruction test: 1. Open and close the gate with the TEST buttons and confirm it stops at the correct limits. 2. Place an object between the open gate and a rigid structure, without triggering any external entrapment device. 3. Run the gate in the close direction; it should stop and reverse on contact. If it does not, turn the force dial slightly counterclockwise. 4. Repeat the test in the open direction. Test the operator after any adjustment.

The operator includes a dust guard, antenna, control board, expansion board, accessory power outlet, AC power switch (turns the incoming 120 Vac power on or off), junction box, limit switches, cover, and the manual release handle and reset button. The manual also shows the 1 HP operator variant, which uses a different drive belt (see Repair Parts).

Manual release handle: pull the handle to manually open and close the gate. Use it only when the gate is not moving.

Reset button: pressing it stops a moving gate like a stop button; pressing it once while the gate is open disables the Timer-to-Close so the gate stays open (press it again or use a programmed remote to restart); and pressing it shuts off the alarm and resets the operator.

Learn button: used for programming remotes and the wireless network. Diagnostic display: shows the operator type, firmware version, and codes. It displays "SL" followed by "30" for the SL3000UL, then the firmware version.

Handing buttons: determine which direction the gate opens and are also used to set the limits and force. OPEN RIGHT is for an operator on the right side of the drive when looking out of the property (a slide gate slides to the right when opening); OPEN LEFT is for the left side. For gates installed on the outside of the property, the setting is opposite, so determine the direction by looking toward the property from the outside.

Bipart delay: used in dual gate applications where a maglock, solenoid lock, or decorative overlay requires one gate to close before the other, or where one gate travels farther. The operator with the dial set to a delay (2 to 8 seconds) delays from the close limit when opening and is the first to close from the open limit. Both OFF or both ON has no effect.

Timer-to-Close (TTC): factory set to OFF (0) and adjustable from 0 to 180 seconds. At 0 the gate stays open until the operator receives another command. Any radio command, single button control, or CLOSE command on the control board before the TTC expires closes the gate, and any signal from the open controls, loops, close edges, and close photoelectric sensors resets the TTC.

Reversal force dial: settings 1 to 3 are fixed, 4 to 10 automatically compensate for wear or temperature. Test buttons: operate OPEN, STOP, and CLOSE and are also used to view the code history.

All control wiring to Class 2 circuits must be Power-Limited Circuit Cable Type CL2, CL2P, CL2R, or CL2X or better.

Three-button control station: OPEN and COMM is a hard open that opens a closed gate, opens a closing gate, and holds an open gate (within line of sight). CLOSE and COMM is a hard close, and STOP and COMM is a hard stop that overrides open and close commands; maintained switches override external safeties and reset an alarm condition within line of sight. Fire department: the FIRE DEPT and OPEN terminals act as a hard open; a maintained input overrides external safeties and pauses the Timer-to-Close, while a momentary input works like single button control with safeties active.

Loops: EXIT is a soft open command for exit probes, telephone entry, or exit loop detectors. SHADOW holds the gate open at the limit when a loop is positioned under the gate and is only active at the OPEN limit. INTERRUPT holds the gate open and reverses a closing gate when a photoelectric sensor or loop sits outside the gate, and activates quick close and anti-tailgate features when enabled on the expansion board.

Photoelectric and edge sensors: at least two external monitored entrapment protection devices are required before the gate will move, one in the open and one in the close direction, and only one monitored device may be connected to each input. CLOSE EYES/INTERRUPT is for close-direction photoelectric sensors (the gate opens fully on an obstruction); CLOSE EDGE is for close-direction edge sensors; OPEN EYES/EDGE is for open-direction sensors (the gate reverses for 4 seconds then stops). Locks: the NC and COM output is a normally-closed relay for maglocks that activates before and during motor run. Accessory power provides 24 Vdc at 500 mA max.

CAUTION: To avoid damaging the circuit board, relays, or accessories, DO NOT connect more than 42 Vdc (32 Vac) to the AUX relay contact terminal blocks.

The expansion board has plug-in loop detector inputs for the Shadow, Interrupt, and Exit loops (model LOOPDETLM), a wireless edge input for kit LMWEKITU, EYES/EDGE terminals, and control station terminals. Its switches are: EXIT FAIL (OPEN opens the gate and holds it open if the plug-in exit loop detector detects a fault; CLOSE ignores the fault), AC FAIL (not used on this model), ANTI TAIL (OFF reverses a closing gate when the Close Eyes/Interrupt loop is activated; ON pauses it until the vehicle clears), and QUICK CLOSE (ON closes an opening or stopped gate when the Close Eyes/Interrupt loop clears, ignoring the Timer-to-Close).

Two auxiliary relays offer Class 2 low voltage contacts (42 Vdc / 34 Vac, 5 Amps max) set by 3-position dipswitches: Open Limit Switch (use with SAMS), Close Limit Switch, Gate Motion, Pre-Motion Delay (energizes 3 seconds before motion), Tamper (energizes if the gate is pushed off the close limit), and Cycle Quantity Feedback, where the 1, 2, and 3 LEDs blink out the stored cycle count. The Power setting is not used on this model. A red light on Aux Relay 1 and a green light on Aux Relay 2 can show gate state.

The expansion board also accepts EYE ONLY and EYE/EDGE entrapment protection inputs (open or close direction set by a nearby switch), a control station (SBC, OPN, CLS, STP with common), and the three loop inputs, which behave like their main-board counterparts. SAMS (Sequenced Access Management System) wiring connects Aux Relay 1, with dipswitches set to 1-OFF, 2-OFF, 3-ON, to the barrier arm operator and to the operator's Exit and Shadow inputs as shown in the manual's diagram. The Field Wiring page of the manual shows every board terminal in one diagram; see the official PDF.

Up to 50 Security+ 2.0® remotes or KPW250 keypads, plus 2 keyless entries, can be stored in memory. When a third keyless entry is programmed, the first is erased; when memory is full, the operator exits programming mode and the memory must be erased before adding more. To program a remote, press and release the LEARN button (the green XMITTER LED lights and the operator beeps), then press the remote button to program within 30 seconds. Three programming options exist: single button as open only (press OPEN, then the remote button), single button as open/close/stop, or three separate buttons for open, close, and stop. If you install an 86LM antenna extension, do not straighten the antenna.

The LiftMaster Internet Gateway pairs through an online account at myliftmaster.com after connecting it to a router and powering it on. The gateway stays in learn mode for three minutes; press the LEARN button twice on the primary operator, or with the gate closed give an OPEN command and, within 30 seconds at the open limit, press the reset button three times to enter High Band Learn Mode. The operator beeps when pairing succeeds.

Constant Pressure Override (CPO) is for use with KPW5 and KPW250 keypads. It temporarily bypasses a faulted entrapment protection device: enter a valid 4-digit PIN, then press and hold # for 5 seconds and keep holding to keep the gate moving. Use it only in direct line of sight with no obstructions. The Gate Hold Open feature disables the timer and keeps the gate at the open limit using the reset button or a keypad PIN while the timer is running; re-enter the PIN or activate a hard input or programmed remote to restart.

To erase all remote codes: press LEARN, then press and hold it again for about 6 seconds until the XMITTER LED flashes. To remove and erase monitored entrapment protection devices: disconnect the device wires, press OPEN LEFT and OPEN RIGHT together (the handing LED stays solid and the other begins flashing), then press both again to exit.

Setup examples cover four site types: Residential (1 to 4 homes), Commercial/General Access (a community of more than four homes), Commercial (security-focused business site), and Industrial (large site requiring security). Quick Close is normally OFF except at industrial sites, where it is ON so the gate closes immediately after a vehicle passes the Close Eyes/Interrupt loop. Anti-Tail is OFF for residential and general access sites and ON for commercial and industrial sites. The Fire Dept input is typically used for general access sites with a Knox box or similar. An optional heater (Models HTRNB and HTR460) keeps the gearbox warm below -4°F, with the thermostat set between 45°F and 60°F.

For dual gate installations, set all accessories and board configurations on the primary operator. Per the Dual Gate Settings table: Timer-to-Close is set on the primary and OFF on the secondary; Bipart Delay is set to a delay on the primary (it opens last and closes first) and OFF on the secondary (it opens first and closes last), with Tandem Mode OFF on both; Quick Close and Anti-Tail are ON for the primary and OFF for the secondary; remote controls 1 to 50 are programmed to the primary and 51 to 100 to the secondary; and the Internet Gateway and Garage and Gate Monitor are programmed to the primary.

WARNING: ALL maintenance MUST be performed by a LiftMaster professional. Disconnect all power to the operator before servicing. Test the gate operator monthly; the gate must reverse on contact with an object.

Notes: severe or high-cycle use needs more frequent checks. Limits may have to be reset after any major drive chain adjustment. If lubricating the chain, use only lithium spray. Never use grease or silicone spray. Verify with a digital voltmeter that incoming voltage is within ten percent of the operator's rating. Over time the chain will stretch; to tighten it, adjust either of the two chain eye bolts, keeping sag to no more than 1 inch for every 10 feet of chain. This AC operator has no batteries to maintain.

To view codes, press and hold STOP, then CLOSE, then OPEN until "Er" shows on the display. The display shows the code sequence number (01 is the most recent) followed by the code itself. Press OPEN to scroll to the most recent code and CLOSE to scroll toward the oldest (up to 20 saved). Press and release STOP to exit; the display also times out after two minutes. To reset the code history, press and hold STOP for six seconds until "Er" then "CL" alternate, then release.

Operator alarm: if a contact sensor detects an obstruction twice consecutively, or if the inherent force sensor detects the following twice consecutively, the alarm sounds for up to 5 minutes and the operator must be reset: the gate hitting a wall or vehicle, the gate not meeting specifications, debris on the gate track such as mud, rocks, or dirt, one or more broken axles or wheels, or a gate wheel off the gate rail. Remove obstructions, then press the reset button to shut off the alarm and reset the operator.

Remote controls and access: universal single and 3-button remotes (811LM, 813LM), Security+ 2.0® learning remotes (892LT, 894LT), the LiftMaster Internet Gateway (828LM), the LiftMaster Cloud connected access protocol (CAPXL), a plug-in loop detector (LOOPDETLM), a door and gate monitor (829LM), a 3-button control station (02-103), and a stop button (AEXITP).

Operator accessories: the Elite Series maglock package (MG1300RLYPKG), heater kit accessories (HTRNB, and HTR460 for 460V applications), VGroove power wheels (AH112 4 inch, AH117 5 inch, AH113 6 inch, and AH103, with optional mounting brackets), a post-mounting plate for the CSL24UL and SL3000 commercial slide gate operators (MPEL), a steel stand for mounting to a concrete pad (MSEL), a warning sign (40-3505), and the transformer kit (3PHCONV) that changes 208/240/480/575 Vac input to 120 Vac.

Entrapment protection: if the gate opening distance is greater than the maximum separation distance of the photoelectric sensors, edge sensors MUST be used. Options are the monitored through-beam photoelectric sensor (LMTBUL), the monitored retro-reflective photoelectric sensor (LMRRUL), the monitored wireless edge kit (LMWEKITU), the monitored wireless edge transmitter (LMWETXU), large profile monitored edge (L50) with ends kit (L50E), small profile monitored edge (S50) with ends kit (S50E), plastic channel (L50CHP), aluminum channel (L50CHAL), large and small profile edges in 4, 5, and 6 foot lengths (L504AL, L505AL, L506AL, S504AL, S505AL, S506AL), an edge cutting tool (ETOOL), and wraparound round and square edges in 4, 5, and 6 foot lengths (WR4, WR5, WR6, WS4, WS5, WS6).

Not shown in the diagram: #41 chain, 10 feet (19-41240D), #40 chain, 10 feet (19-40240D), #41 chain, nickel plated (19-41240D-NP), #41 master link (19-50307), #40 master link (19-50310), plastic standoffs for the main control board, 10 per bag (K77-37683), wire harnesses between the main board, power board, ground, and transformer (K77-37693), wire harness between the main board and expansion board (K94-34778), reset switch with ID (K94-37468), hardware kit with chain bolt and chain bracket (K77-36764), and chain bolt (K07-50637). The power board, the RPM encoder board, and the 1/2 HP and 1 HP motors are also shown in the diagram; the printed part numbers for those items are unclear or repeated in the manual, so confirm them against the official PDF before ordering.

LiftMaster warrants the SL3000UL against defects in materials and workmanship for 7 years for residential installations and 5 years for commercial installations from the date of purchase, contingent on following the installation, operation, maintenance, and testing instructions in this manual. The warranty does not cover gate or gate hardware issues, damage from improper installation or care, labor for reinstalling repaired units, or battery replacement. Call 1-800-528-2806 for warranty service before dismantling the product.