Condensate pump
To maintain or replace the pump:
1.
Open the rear door. Disconnect the main circuit breaker.
2.
Remove filters. For details on removing filters, see
Removing the Upper and Lower Filters
3.
Unplug the two power cables (labeled "Pump") from the terminals near the pump. Loosen the hose clamp on
the connection between the water inlet tube and the soft pipe. Loosen the hose clamp on the connection
between the drainage tube and the soft pipe. Pull out the soft pipes.
a. To maintain the pump, check and clear any obstructions in the main line for the condensate pump. Re-
install the pump and check the operation.
b. To replace the pump, reverse the steps to install the replacement pump.
9.4 Condenser
To maintain the condenser:
•
Clear coil surface of all debris that inhibit airflow.
•
Check that there are no bent or damaged coil fins.
•
Do not permit snow to accumulate around the outdoor unit.
•
Periodically clean coil surface with dedicated degreasing products.
•
Inspect fans, motors and controls for proper operation.
•
Check all piping and capillaries for proper support.
•
Inspect for leaks.
9.5 Fan
WARNING! Risk of electric shock and contact with high speed rotating fans. Can cause injury or death. Switch
off all local and remote electrical supplies, verify that power is off with a voltmeter and verify that all fans
have stopped rotating before working inside the unit cabinet or disconnecting the fan power wires.
To replace the fan:
1.
Open the rear door and disconnect the main circuit breaker.
2.
Open the front door.
3.
Remove the fan frame assembly by removing the four M5 x 12 hex screws in the corners.
4. Set the fan assembly in a work area.
5.
Remove the fan by removing the four M4 x 80 pan head screws, remove one grounding screw that attach the
fan to the fan frame, and unplug the power supply terminal from the power socket on the fan frame assembly.
6. Reverse the steps to install the replacement fan.
9 Maintenance
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Vertiv™ Liebert® CRV CRD25 and CRD35 Row-Based Cooling System User Manual
