Liebert 50 & 60Hz User Manual

___ 1. Proper clearance for service access has been maintained around the equipment.
___ 2. Equipment is level and lock-nuts are installed with the leveling nuts on the spring isolators.
___ 3. Piping completed to refrigerant or coolant loop (if required). Refrigerant charge added (if 

required).

___ 4. Condensate pump installed (if required).
___ 5. Drain line Connected.
___ 6. Water supply line connected to humidifier (if required). Route to allow air filter removal.
___ 7. Field provided pan with drain installed under all cooling units and water/glycol condensing 

units.

___ 8. Filter box installed.
___ 9. Ducting completed.
___ 10. Filter(s) installed in return air duct.
___ 11. Line voltage to power wiring matches equipment serial tag.
___ 12. Power wiring connections completed and phased correctly between disconnect switch, 

evaporator, and condensing unit, including earth ground.

___ 13. Power line circuit breakers or fuses have proper ratings for equipment installed.
___ 14. Control wiring connections completed to evaporator and condensing unit (if required, 

including wiring to wall-mounted control panel and optional controls).

___ 15. Control panel DIP switches set based on customer requirements.
___ 16. All wiring connections are tight.
___ 17. Foreign materials have been removed from in and around all equipment installed (shipping 

materials, construction materials, tools, etc.)

___ 18. Fans and blowers rotate freely without unusual noise.
___ 19. Inspect all piping connections for leaks during initial operations. Correct as needed.