LiftMaster SW420 SW420 GL BOARD Manual - Page 29

MAINTENANCE NG N IMPORTANT SAWFEATRYNININSGTRUCTIONS WARNING To reduce the risk of SEVERE INJURY or DEATH: 1. READ AND FOLLOW ALL INSTRUCTIONS. 2. NEVER let children operate or play with gate controls. Keep the remote control away from children. 3. ALWAYS keep people and objects away from the gate. NO ONE SHOULD CROSS THE PATH OF THE MOVING GATE. AVERTISSEMENT 4. Test the gate operator monthly. The gate MUST reverse on contact with a rigid object or stop when an object activates the non-contact sensors. After adjusting the force or the limit of travel, retest the gate operator. Failure to adjust AVERTISSEMENT and retest the gate operator properly can increase the risk of INJURY or DEATH. 5. Use the emergency release ONLY when the gate is NOT moving. ATTENTION 6. KEEP GATES PROPERLY MAINTAINED. Read the owner's manual. Have a qualified service person make repairs to gate hardware. 7. The entrance is for vehicles ONLY. Pedestrians MUST use separate entrance. 8. Disconnect ALL power BEFORE performing ANY maintenance. 9. ALL maintenance MUST be performed by a LiftMaster professional. 10. SAVE THESE INSTRUCTIONS. AVERTISSEMENT DESCRIPTION TASK CHECK AT LEAST ONCE EVERY 3 MONTHS 6 MONTHS 12 MONTHS RPM Sensor (Hall Effect) Check for proper adjustment X X External Entrapment Check for proper operation X X Protection Systems Gate Caution Signs Make sure they are present X X Manual Disconnect Check and operate X X Drive Chain Check for excessive slack and lubricate X X Sprockets and Pulleys Check for excessive slack and lubricate X X Gate Inspect for wear or damage X X Accessories Check all for proper operation X X Electrical Inspect all wire connections X X Frame Bolts Check for tightness ADVERTENCIA X X Total Unit Inspect for wear or damage X X ADVERTENCIA NOTES 1. Severe or high cycle usage will require more frequent maintenance checks. 2. Inspection and service should always be performed anytime a malfunction is observed or suspected. 3. Limit switches may have to be reset after any major drive chain adjustments. 4 If lubricating chain, use only a proper chain lube spray or a lightweight motor oil. Never use grease or silicone spray. 5. 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. 6. 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 operators rating. 29