Liebert MC Condenser (if equipped)
1. Coil clean
2. Fans free of debris
3. Fans securely mounted
4. Motor bearings in good condition
5. Check all refrigerant lines for vibration isolation. Support as necessary
6. Check for refrigerant leaks
7. Check surge-protection device (if installed) status-indicator lights
8. Check/Re-torque wire connections
9. Check contactors for pitting (replace if pitted)
10. Verify operation sequence/set points
11. Charge verification:
a. Outdoor Ambient Temperature------__________
b. Subcooling------__________
c. Indoor-unit Return-air Temperature------__________
d. Sight-glass level (if Lee-Temp or pumped refrigerant)------__________
12. Motor amp draw
#1 L1 L2 L3
#2 L1 L2 L3
#3 L1 L2 L3
#4 L1 L2 L3
Glycol Pump
1. Check pump rotation
2. Check pump and supply/return lines/connections for leaks
3. Pump pressures
#1 Suction Discharge
#2 Suction Discharge
#3 Suction Discharge
4. Amp Draw
#1 L1 L2 L3
#2 L1 L2 L3
#3 L1 L2 L3
5. Verify pump changeover (if multiple pumps)
Vertiv | Liebert CRV Installer/User Guide | 150
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