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Table .7-1. Preventive Maintenance Checks and Services—Continued
Q
7
8
9
10
11
12
Interval
Operator
Daily
A
B
D
x
x
w
x
x
M
x
x
x
x
x
x
B — Before Operation
A — After Operation
M – Monthly
D – During Operation
w — Weekly
Q – Quarterly
Item to be Inspected
Air filter
Condenser
intake
and
discharge
grilles.
Evaporator
and
condenser coils.
Evaporator
and
condenser fans.
H e a t e r c o i l a n d
wiring,
Louver (vent ) and
louver cable
Procedure
Clean as necessary.
Inspect for insecure mounting and proper
operation. Replace as necessary.
Check tubing for dirt, leaks, obstructions, and
damage. Clean as necessary. Be careful not
to damage fins.
Check tubing connections for leaks and
damage.
Check for damage and abnormal vibration.
Check motor for signs of overheating.
Clean dirty fan blades.
Check for damage and breaks in wiring and
insulation.
Tighten loose connections.
Inspect for insecure mounting and proper
operation. Work control knob manually to
insure proper operation.
Note.
During operation,
observe for unusual noise
vibration, failure to deliver full capacity of cooling 01
beating, and failure to respond to controls.
Reference
para 3-15.
para 3-10
and 3-9.
para 3-35.
para 3-30
and “-29.
para 3-31.
para 3-8.
3-2
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