LiftMaster LA412 LA412 Manual - Page 36

OPERATION AND MAINTENANCE » MANUAL RELEASE + MAINTENANCE MANUAL RELEASE In case of a power failure, the operator can be disengaged from the gate. With an operator, the release action may sometimes feel stiff/jerky, which is normal and has 1 2 no effect on function. RELEASE 1 Insert the key into the lock. 2 Turn the key counter-clockwise 180°. 3 Turn the release lever counter-clockwise 180°. Operator is in manual mode and the gate can be opened and closed manually. ENGAGE 1 Turn the release lever clockwise 180°. This engages the motor. 1 2 2 Turn the key clockwise 180°. This locks the release lever. 3 Remove the key and store in a safe place. The operator is now engaged. 3 3 MAINTENANCE Disconnect power before servicing. DESCRIPTION External Entrapment Protection System Manual Release Gate Accessories Electrical Mounting Hardware Batteries Operator Warning Signs TASK Check and test for proper operation Check and test for proper operation Inspect for wear or damage Check all for proper operation Inspect all wire connections Check for tightness Replace Inspect for wear or damage Make sure they are present NOTES: • Severe or high cycle usage will require more frequent maintenance checks. • Inspection and service should always be performed anytime a malfunction is observed or suspected. • When servicing, please do some "house cleaning" of the operator and the area around the operator. Pick up any debris in the area. Clean the operator as needed. • 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 it is within ten percent of the operator's rating. • See page 32 for instructions on how to adjust the gate force. 35 MONTH X X X CHECK AT LEAST ONCE EVERY 6 MONTHS 3 YEARS X X X X X X