Maintenance & Troubleshooting
Vertiv | Liebert CRD10 | User Manual 96
7.7 Electrical Heater Maintenance (Only CE Model)
WARNING! Risk of electric shock. Can cause equipment damage, injury or death. Open all local and
remote electric power supply disconnect switches and verify with a voltmeter that power is off before
working within any electric connection enclosures. Service and maintenance work must be performed
only by properly trained and qualified personnel and in accordance with applicable regulations and
manufacturers’ specifications. Opening or removing the covers to any equipment may expose
personnel to lethal voltages within the unit even when it is apparently not operating and the input
wiring is disconnected from the electrical source.
Following are the basic instructions relevant to the maintenance of the Electrical Heater from the user
perspective:
1. If an optional electrical heater is used, then it should be monitored periodically.
2. Ensure that there is no dust, debris, or foreign matter on the surface. The heater elements will heat
continuously in the normal state.
3. Inspect the heater every six months for its functionality.
If the heating is not effective, the electric heater needs to be replaced. Following are the procedures of
replacing electrical heater:
1. Shut off power to the unit by closing the main switch.
2. Open the front door and remove the fan assemblies. If replacing the electrical heater above, remove
the upper two fan assemblies, if replacing the electrical heater below, remove the two fan assemblies
below.
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