9 Maintenance
WARNING! All maintenance operations must be carried out strictly observing the European and National
accident prevention regulations, especially the accident prevention regulations concerning electrical
systems, refrigerators and manufacturing resources. Maintenance may be done to air conditioning
equipment only by authorized and qualified technicians. To keep all warranties valid, the maintenance must
adhere to the manufacturer’s instructions.
WARNING! The work should be done on the system only when it is at switched-off. Stop the system by
switching off the air conditioner at the controller and the main switch. Check that the electrical components
of device are off and not receiving a power supply.
NOTICE
Only original spare parts made by Vertiv may be used. Using third-party material can invalidate the warranty.
When the spare parts must be brazed, be careful not to damage the internal parts (gaskets, seals, o-rings, etc.).
NOTICE
Risk of release of hazardous substances into the environment. Can cause environmental pollution and violation
of environmental regulations.
NOTICE
When the unit stops work for a long time, drain the water inside the unit through the water drainage valve under
the coil. To open the valve, remove the water drain pan filter and remove the cap from the valve. The location of
the water drain pan filter is shown in
9.1 Maintenance Schedule
Conduct monthly, quarterly, biannual and annual checks according to the following guidelines.
Component
Check Items
Maintenance Period
Monthly by user
3 months
6 months
1 year
General
Check unit/remote
display for clogged-filter
warning
X
Check for irregular noise
from unit fans
X
Filters
Check the state of filters
X
Clean or replace air filters
if necessary
X
Fan
Verify that impellers
move freely
X
Check bearings
X
Check that motor
supports are fixed
securely
X
9 Maintenance
57
Vertiv™ Liebert® CRV CRC30 and CRC60 Chilled Water Cooling System User Manual
