Table of Contents
Advertisement
Maintenance
Warning: Disconnect power before servicing.
1. Using a clean, dry cloth, wipe the gate opener shaft, and then apply a silicone spray to reduce its
friction. In cold climates where temperatures reach 1° C (30° F) or less, spray silicone on the actuator arm
every 4-6 weeks to prevent freeze up.
2. Regularly check gate hinges to make sure gate is swinging smoothly and freely. Grease hinges if
needed.
3. Check your installation periodically, as hardware and posts will shift. Brackets may need to be
adjusted or hardware may need to be tightened.
4. Maintain the area around your gate. Keep the areas free of objects that can prevent the gate swinging
freely.
NOTES:
1. Inspection and service should always be performed anytime a malfunction is observed or suspected.
2. 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 opener it is within ten percent of the opener's rating.
3. Refer to page 18 for instructions on how to check gate force and sensitivity adjustments.
Trouble Shooting
1. Opener does not run. Digital Display indicator is not on.
• Check if all motor are properly connected and color coded. Make sure the AC input is connected.
• Check if the fuse in control board is bad.
2. Opener powers up but does not run.
• Arm cable loose or disconnected. Verify that all of the wires going to the arm are secure and that the
connector is properly mated to the header.
• Arm is incorrectly installed. Disconnect the motor housing from the arm and verify that the arm moves
freely.
• Gate is excessively heavy or hinges are bad. Verify that the gate is within the ratings for this product.
Disconnect the arms and verify that both gates swing easily. Lubricate or replace hinges as necessary.
• Bad control board. Call technical support for help with replacement parts.
3. Gate stops immediately after it starts moving.
• Obstruction sensed. Check safety devices and gate for obstructions.
• Force set too low. Adjust FORCE setting until gate completes a full open/close cycle without stop. The
force setting may need to be adjusted in cold weather, as the gate will not move freely.
• Check if the TTC period is too short. Refer to page 19.
• Incorrect power.
4. Gate opens but does not close.
•Photocell (PBS) is set in Control Board but is not equipped (optional). Please cancel the PBS set. Refer
to page 19.
• Obstruction blocking close photo eyes, Check eyes for alignment and verify all connections and
operation for safety devices.
5. Gate ignores the limit switches
• Check that the limit switch is not faulty
26
Hide quick links:
Advertisement
Table of Contents
Need help?
Do you have a question about the LM901 and is the answer not in the manual?
Questions and answers
Hi my remote for lm901 won’t open my ****
The LockMaster LM901 remote may not open your door if the remote control transmitter and the gate opener receiver are not programmed to a matching code. To resolve this, you need to program the remote to the opener:
1. Ensure the Digital Display indicates "PC."
2. Press and release the "INC" button, and the Digital Display will indicate "Ln."
3. Press the key on the remote control twice.
4. Wait for "PC" to display on the Digital Display after "Ln" flashes for 4 seconds, confirming the opener has learned the code.
Repeat these steps if necessary for additional remotes.
This answer is automatically generated
My lockmaster lm902 after closing.approx 1 min after it will automatically open.
"..unscrew Limit Switch B and slide it to the desired position. Then fix the Limit Switch B." The position to what? What is desired position? How to change position of magnetic ring?
The desired position for Limit Switch B on the LockMaster LM901 is at the fully closed position of Gate 1. To set it, pull Gate 1 to its fully closed position, use a cross point screwdriver to unscrew Limit Switch B, slide it to the desired position, and then fix it in place.
The magnetic ring must always be placed between Limit Switch A and Limit Switch B.
This answer is automatically generated
How do I problem the controller to leave the gate open until I use the remote to close?