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37
Maintenance Chart
Disconnect all power (AC, solar, battery) to the operator before servicing.
DESCRIPTION TASK CHECK AT LEAST ONCE EVERY
MONTH 6 MONTHS 3 YEARS
Entrapment Protection Devices
Check and test inherent (built into the operator) and external devices for
proper operation
X
Warning Signs
Make sure they are present and replace if worn or broken, see Accessories
X
Manual Disconnect Check and test for proper operation X
Sprockets and Chains Check for excessive slack and lubricate X
Gate Inspect for wear or damage; ensure it still complies with ASTM F2200, see
page 5
X
Accessories Check all for proper operation X
Electrical Inspect all wire connections X
Chassis Mounting Bolts Check for tightness X
Operator Inspect for wear or damage X
Diagnostic History Review diagnostic history for identification of intermittent problems
X
Batteries Replace
X
NOTES:
•
High cycle usage may 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
is within ten percent of the operator’s rating.
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 two 7AH batteries. Two 33AH batteries
(A12330SGLPK), with battery harness model K41-0102-000 (not
provided), may be used in place of the 7AH batteries.
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
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