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Table 3-1. Preventive Maintenance Checks and Services
Operator’s Maintenance Category
Interval and sequence
Before
operation
1
2
3
4
5
6
7
8
9
. .
During
operation
. .
.
. .
. .
. .
.
. .
. .
. .
10
11
After
operation
12
13
14
15
16
17
18
Item to be
inspected
Evaporator outlet louver.
Evaporator inlet louver.
Condenser cover.
Fresh air inlet screen.
Drains.
Condenser louver.
Condenser guard.
Controls.
Main power receptacle connector.
Liquid sight indicator.
Air conditioner operation.
Condenser cover.
Daily Schedule (or weekly )
Procedure
Remove obstructions. Clean louvers. Tighten
mounting screws.
Remove obstructions. Clean louvers. Check for
ease of operation. Tighten mounting screws,
With cover rolled up for operation, check
securing ties for damage.
Inspect
for obstructions and insecure
mounting. Remove obstructions clean and
tighten loose mounting screws,
Inspect drains for obstructions. Remove ob-
structions.
Check for insecure mounting and damaged
Iouvers.
Remove obstructions and clean guard.
Check for visual damage. Check operation of
damper control.
Check for secure power connection. Tighten if
necessary.
Check for moisture and low refrigerant charge.
Yellow indicates moisture, bubbles or milky
appearance indicates low charge.
Check for abnormal operation, vibration,
unusual noise. failure to respond to controls.
Check for damaged fasteners.
Paragraph
reference
Para 3-10
Para 3-10
Para 3-10
Para 3-11
Para 3-10
Para 3-10
Para 2-8
Para 3-12
3-2
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