Liebert® MC or MCV Condenser
1. Coil clean of debris (Clean coil if required)
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
#5 L1 L2 L3
#6 L1 L2 L3
#7 L1 L2 L3
#8 L1 L2 L3
#9 L1 L2 L3
#10 L1 L2 L3
#11 L1 L2 L3
#12 L1 L2 L3
#13 L1 L2 L3
#14 L1 L2 L3
#15 L1 L2 L3
#16 L1 L2 L3
Liebert® EconoPhase Pumped-refrigerant Economizer (if equipped)
1. Check for refrigerant leaks
2. Check/Re-torque wire connections
3. Check contactors for pitting (replace if pitted)
4. Verify pump-speed control operation
5. Check pump mounting
Vertiv | Liebert® DSE™ Installer/User Guide
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