Ccu Spring Tune-Up - Carrier ComfortPro PC6000 Operation & Service Manual

Purpose:
Recommended
Service Actions:
62-11175 COMFORTPRO SERVICE MANUAL

2.2.2 CCU Spring Tune-Up

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.
1. Check the condenser for:
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
160
150
140
130
120
110
100
90
80
70
60
50
40
30
20
60 65 70 75
5. Check the Refrigerant lines and connections for:
• Abrasion and wear points.
• Connection wet spots that may indicate refrigerant leakage.
77°F, 100 kOhm
80 85 90 95 100
TEMPERATURE (°F)
105 110 115 120
2-3