5 62-10327
PHYSICAL INSPECTION
Rear of Unit
1. Remove the upper internal access panel, remove any debris, and
rinse the rear of unit with low pressure water. This includes the
evaporator coil (Refer to Figure 3).
2. Examine the evaporator motors for excessive end play. Slowly spin
the evaporator fan blade and feel for any bearing drag. Replace
bearing if required.
3. Examine the evaporator fan blade (Refer to Figure 4):
a. Check for cracking or wear. Replace fan blade as necessary.
b. Check that evaporator motor clamp brackets are secured.
4. Examine wire harnesses for any wear or damage and repair as
required. Ensure they are properly secured.
5. Examine defrost termination sensor (DTS) to ensure it is properly
secured to the unit and free of damage (Refer to Figure 5).
Replace or repair if necessary.
Figure 5 DTS Sensor
6. Examine sensors (i.e. return air, supply air, temperature recorder,
humidity and evaporator temperature sensors) for proper
positioning and security to unit. Examine sensor leads for damage,
replace or repair as necessary. Refer to the operation & service
manual for details on equipped sensors. Locating operation &
service manuals is explained in the Purpose section.
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