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62-11175 COMFORTPRO SERVICE MANUAL
2-3
2.2.2 CCU Spring Tune-Up
Purpose:
Recommended service and maintenance:
• Condenser.
• Air ducting and outlets.
• Evaporator and temperature sensor.
• Refrigerant lines connections and routing.
• Harness Connections and wiring.
• A/C operating efficiency - charge level.
Frequency:
Annually – preferably in the spring for the coming A/C season.
Recommended
1.
Check the condenser for:
Service Actions:
Damage, leakage and/or contaminated fins that may restrict air flow.
2.
Check air ducting and outlets for:
Damage and/or restrictions.
3.
Check electrical harnesses for:
Tight connections and harness abrasions.
4.
Check the evaporator for:
• Intake filter cleanliness, clean if required.
• Damaged and/or contaminated fins that may restrict air flow.
• Refrigerant leaks indicated by wet spots or dark stains on the evaporator
fins and connections.
• Check evaporator temperature sensor for proper function (see chart).
COMFORTPRO CCU EVAPORATOR DEFROST SENSOR TEMPERATURE – RESISTANCE CHART
20
30
40
50
60
70
80
90
100
110
120
130
140
150
160
60
65
70
75
80
85
90
95
100
105
110
115
120
TEMPERATURE (°F)
kOhm
77°F, 100 kOhm
5.
Check the Refrigerant lines and connections for:
• Abrasion and wear points.
• Connection wet spots that may indicate refrigerant leakage.