LiftMaster RSL12V RSL12V Installation Manual - Page 26

OPERATION AND MAINTENANCE » MAINTENANCE + BATTERY + DRIVE CHAIN MAINTENANCE Disconnect all power to the operator before servicing. DESCRIPTION External Entrapment Protection System Photoelectric Sensors Warning Signs Manual Disconnect Drive Chain Sprockets and Pulleys Gate Accessories Electrical Chassis Mounting Bolts Operator Batteries TASK Check and test for proper operation Check and test for proper operation Make sure they are present Check and test for proper operation Check for excessive slack and lubricate Check for excessive slack and lubricate Inspect for wear or damage Check all for proper operation Inspect all wire connections Check for tightness Inspect for wear or damage Replace MONTH X X X X X CHECK AT LEAST ONCE EVERY 6 MONTHS 3 YEARS X X X X X X X NOTES: • Severe or high cycle usage will require more frequent maintenance checks. • Limits may have to be reset after any major drive chain adjustments. • If lubricating chain, use only lithium spray. Never use grease or silicone spray. • 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. BATTERY The battery should be replaced every three years. Use only LiftMaster part 29-NP712 for replacement batteries. The operator comes with one 7AH battery. A second 7AH (29-NP712) battery may be added or one 33AH (A12330SGLPK) may be used in place of the 7AH batteries. The batteries contain lead and need to be disposed of properly. DRIVE CHAIN Over time, the drive chain on the operator will stretch and need to be tightened. To tighten the drive chain adjust either of the two chain eye bolts. NOTE: The chain should have no more than 1 inch of sag for every 10 feet of chain length. 25