The complexity of water/glycol solution condition problems and the variations of required treatment programs make it
extremely important to obtain the advice of a competent and experienced water-treatment specialist and follow a
regularly-scheduled coolant-fluid system-maintenance program. It is important to note that improper use of water
treatment chemicals can cause problems more serious than using none. Proper inhibitor maintenance must be performed in
order to prevent corrosion of the glycol system. Consult the glycol manufacturer for testing and maintenance of inhibitors.
Do not mix products from different manufacturers.
9.4 Spare Parts
Only original spare parts made by Vertiv™ may be used. Using third-party material can invalidate the warranty.
NOTE: When replacing a faulty component, follow the relevant manufacturer instructions.
NOTE: When the spare parts must be brazed, be careful not to damage the internal parts (gaskets, seals, O-rings,
etc.).
9.5 Air Filters
Check the filters monthly to maintain efficient air distribution through the evaporator coil.
1.
Open the rear door and remove filters. For details on removing filters, see
2.
Disconnect the main circuit breaker.
3.
If the filters appear dirty, replace them.
NOTE: Before replacing filters, check that the air differential pressure switch tube is not damaged.
NOTE: After replacing filters, clear the fan operating time. Press the menu button on the HMI display, choose
Maintenance > Parameter Reset, and select Yes for Confirm Filter Maintenance.
9.6 Condensate Drain and Condensate Pump
Condensate drain
To maintain the condensate drain:
•
Check and clear any obstructions in pipelines during routine maintenance.
•
Check that the water filter on the condensate drain pan is not blocked. To remove the water filter:
a. Open the rear door and remove filters. For details on removing filters, see
b. Disconnect the main circuit breaker.
c. Rotate the butterfly screw counter-clock wise to loosen it.
d. Hold the butterfly screw to remove the water filter.
9 Maintenance
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Vertiv™ Liebert® CRV CRC30 and CRC60 Chilled Water Cooling System User Manual
