Maintenance Chart; Batteries - Chamberlain HDSW24UL Installation Manual

Maintenance Chart

Disconnect all power (AC, solar, battery) to the operator before servicing.
DESCRIPTION
Entrapment Protection Devices
Warning Signs
Manual Disconnect
Sprockets and Chain
Gate
Accessories
Electrical
Chassis Mounting Bolts
Operator
Diagnostic History

Batteries

NOTES:
• 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.
33AH batteries are NOT compatible if transformer kit model 3PHCONV is
installed.
MAINTENANCE
Check and test inherent (built into the operator) and external devices for
proper operation
Make sure they are present and replace if worn or broken, see Accessories
Check and test for proper operation
Check for excessive slack and lubricate
Inspect for wear or damage; ensure it still complies with ASTM F2200, see
page 6
Check all for proper operation
Inspect all wire connections
Check for tightness
Inspect for wear or damage
Review diagnostic history for identification of intermittent problems
Replace
TASK
41
CHECK AT LEAST ONCE EVERY
MONTH 6 MONTHS 3 YEARS
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