Manual

28
OPERATION AND MAINTENANCE » MAINTENANCE + BATTERY
MAINTENANCE
Disconnect all power to the operator before servicing.
CHECK AT LEAST ONCE EVERY
DESCRIPTION TASK MONTH 6 MONTHS 3 YEARS
External Entrapment Protection System Check and test for proper operation X
Photoelectric Sensors Check and test for proper operation X
Warning Signs Make sure they are present 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 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
Batteries Replace X
NOTES:
• Severe or high cycle usage will require more frequent maintenance checks.
• 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.