#4 L1 ____________________________ L2 ____________________________ L3 ____________________________
#5 L1 ____________________________ L2 ____________________________ L3 ____________________________
#6 L1 ____________________________ L2 ____________________________ L3 ____________________________
#7 L1 ____________________________ L2 ____________________________ L3 ____________________________
#8 L1 ____________________________ L2 ____________________________ L3 ____________________________
Glycol Pump (if equipped)
______ 1. Check pump rotation
______ 2. Check for glycol 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)
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------__________
Vertiv | Liebert® MC™ Installer/User Guide | 124
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