LiftMaster RSL12UL Owners Manual - English French - Page 30

Batteries, Drive Train

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MAINTENANCE Batteries Batteries will degrade over time depending on temperature and usage. The operator alarm will beep 3 times with a command if the battery is low. Batteries do not perform well in extremely cold temperatures. For best performance, the batteries should be replaced every 3 years. Use only LiftMaster part 29-NP712 for replacement batteries. The batteries contain lead and need to be disposed of properly. The operator comes with one 7AH battery. One 33AH Battery (A12330SGLPK), with 33AH Battery Harness (K94-37236) may be used in place of the 7AH battery. Drive Train 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. 30

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Batteries
Batteries will degrade over time depending on temperature and usage. The operator alarm will beep 3 times with a command if the battery is low. Batteries
do not perform well in extremely cold temperatures. For best performance, the batteries should be replaced every 3 years. Use only LiftMaster part
29-NP712 for replacement batteries. The batteries contain lead and need to be disposed of properly.
The operator comes with one 7AH battery. One 33AH Battery (A12330SGLPK), with 33AH Battery Harness (K94-37236) may be used in place of the 7AH
battery.
Drive Train
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.
MAINTENANCE