LiftMaster BG790 BG790 Manual - Page 20

MAINTENANCE IMPORTANT SAFETY INSTRUCTIONS 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. 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 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. 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. DESCRIPTION External Safety Systems Gate Caution Systems Drive Chain (see notes) Sprockets and Pulleys Gate Accessories Electrical Frame Bolts Total Unit TASK Check for proper operation Make sure they are present Check for excessive slack and lubricate Check for set screw tightness Inspect for wear or damage Check all for proper operation Inspect all wire connections Check for tightness Inspect for wear or damage CHECK AT LEAST ONCE EVERY 1 MONTH X X X 6 MONTHS X X X X X 12 MONTHS X X X X X X X X X NOTES: • Inspection and service should always be performed anytime a malfunction is observed or suspected. • Limit switches may have to be reset after any major drive chain adjustments. • BG790: If lubricating chain, use only a proper chain lube spray or a lightweight motor oil. Never use grease or silicone spray. • 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 if needed. • Severe or high cycle usage will require more frequent maintenance checks. • It is suggested that while you are at the site, take some voltage readings of the operator. Using a VOM, double check the incoming voltage to the operator to make sure it is within ten percent of the operator's rating. • While you are at the site, now would be a good time to let the owner or manager know about any new items available or any safety items that could and should be added to the site. LIMITED BEARING LUBRICATION The barrier gates require very little in the way of maintenance. Motor and shaft bearing normally should not require lubrication. The gear oil in the gear reducer is sealed in. Unless a severe problem causes a seal to break, it should never need replacement. If gear oil is required, use Mobilube C SAE140 or equivalent. GREASE TURNBUCKLE Periodically grease the ball ends of the turnbuckle, depending on the gate's frequency of use. 20