Vertiv Liebert CRV - Page 148

Condensate Pump (if equipped)
1. Check for debris in sump
2. Check operation of float(s) (free movement)
3. Check/Clean discharge check valve
Electrical Panel
1. Check fuses
2. Check contactors for pitting (Replace if pitted)
3. Check/Re-torque wire connections
Controls
1. Check/Verify control operation (Sequence)
2. Check/Test changeover device(s) (if equipped)
3. Check/Test water-detection device(s) (if equipped)
4. Check/Test CAN connection between indoor and outdoor units (if equipped)
Refrigeration Piping
1. Check refrigerant lines (clamps secure/no rubbing/no leaks)
2. Check for moisture (sight glass)
3. Check for restriction temperature drop across filter drier
Compressor Section (if equipped)
1. Check oil level
2. Check for oil leaks
3. Check compressor mounts (springs/bushings)
4. Cap tubes (not rubbing)
5. Check/Re-torque wire connections (inside compressor box)
6. Compressor operation (vibration/noise)
7. Check crank-case heater fuses/operation (if equipped)
8. Check for refrigerant leaks
9. Suction pressure Circuit #1
10. Discharge Pressure Circuit #1
11. Superheat Circuit #1
12. Low-pressure switch cut out Circuit #1
13. Low pressure cut in Circuit #1
14. High pressure cut out Circuit #1
15. Amp draw
L1 L2 L3
Vertiv | Liebert CRV Installer/User Guide | 148