Unit Preventive Maintenance Checks and Services (PMCS)
Quarterly Schedule - continued
Item to be
a. Check all mounting hardware and linkage connections for 4-21
Louver and Actuator
b. Clean and lubricate as necessary.
c. Install condenser air inlet guard and top panel.
a. Wipe all surfaces clean.
Panels, Nameplates and
b. Check that ail warning and instruction plates are in place
c. Replace missing or illegible plates.
d. Check that all panels are in place, that there is no missing
or loose hardware and no dents, breaks, or damage that
would be a hazard or interfere with unit operation.
Do not check operation in COOL mode until
input power has been reconnected for a
sufficient time to eliminate any danger of
liquid refrigerant accumulation in the
input power has been disconnected, a four
hour warm-up period should be allowed. If
the air conditioner has been exposed to
below freezing temperatures without input
power, an eight hour warm up period is
a. Be sure MODE SELECTOR switch is in the OFF position
and reconnect input power.
b. Perform functional check of air conditioner in all
operational modes in accordance with the instructions in
c. Set-up air conditioner for desired operational mode.
d Record performance of quarterly PMCS, including all
corrective actions taken.