153 S450 Operation & Maintenance Manual
HEATING, VENTILATION, AND AIR CONDITIONING (HVAC) SYSTEM (CONT’D)
Air Conditioning Evaporator / Heater Coil (Cont’d)
NOTE: Improper cover installation can damage the
seal, which may lead to HVAC component
failure. Perform the following steps in the
order given to prevent cover seal damage.
Figure 202
1. Hold the cover in place and fasten two latches (Item
1) [Figure 202].
Figure 203
2. Push the cover up in three places (Items 1, 2, and 3)
until the slots snap into place on the tabs. This slot
(Inset) [Figure 203] is correctly fastened.
Figure 204
3. Fasten the two remaining latches (Item 1)
[Figure 204].
NOTE: Perform a thorough visual check to ensure
that the cover and the cover seal are not
deformed. The cover should seal tightly all
around without any gaps.
Lower the operator cab. (See Lowering on Page 148.)
Air Conditioning Condenser
The condenser should be cleaned with the hydraulic fluid
cooler and radiator assembly. (See Cleaning on Page
164.)
Air Conditioning Lubrication
Operate the air conditioning for approximately 5 minutes
every week to lubricate the internal components.
Troubleshooting
If the fan does not operate or the air conditioning does
not turn on, check the fuse. (See Fuse And Relay
Location / Identification on Page 169.) The refrigerant
may need to be recharged if the air conditioning system
circulates warm air.
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