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Maintenance:
30
NOTE: Some transmitters use two CR2016
or equivalent batteries while others use a
single MN21 or equivalent battery.
NOTE: Use only MN21 or
equivalent 12-volt batteries.
Monthly Maintenance:
1. With door fully closed, manually operate the door with the emergency disconnect in the manual door
operated position. If the door feels unbalanced or binds, have a qualified service person repair or make
adjustments to the door.
2. Perform the contact/obstruction tests. See Step 21 & 22 for the contact/obstruction test instructions. Inability
to activate a door using the transmitter or wall station may be caused by a weak or dead battery. Press and hold
the activation button on either the transmitter or the wall station. If the LED does not light, this is an indication
that the battery is weak or dead. Replace the battery.
NOTE: Dispose of dead batteries properly.
Battery replacement:
Insert a coin in the coin slot of the transmitter or wall station and twist coin to access the dead battery. Replace
the battery, being careful to match the positive (+) symbols on the circuit boards with the battery.
COIN SLOT
COIN SLOT
LED
LED