8.3 Evaporator Fan Maintenance
WARNING! Risk of very heavy, 250-lb (113.4-kg) evaporator fan modules dropping downward suddenly. Can
cause injury or death. Support fan modules before removing mounting hardware. Use caution to keep body
parts out of the fan modules pathway during repositioning. Only properly trained and qualified personnel
should work on this equipment.
Consult the factory for fan, blower, or inverter maintenance. Do not attempt to service or remove the fans without first
contacting Vertiv support at 1-800-222-5877.
8.3.1 Fan Assembly Troubleshooting
Any safety hazards stemming from the device must be re-evaluated once it is installed in the end device.
Do not make any modifications, additions or conversions to the fan assembly without the approval of Vertiv.
WARNING! Risk of electric shock. Can cause serious injury or death. Open all local and remote electric power-
supply disconnect switches and verify with a voltmeter that power is off before opening the fan motor
electric-connection enclosure. Use only fully-trained and qualified HVAC technicians to replace or perform
maintenance on the EC fans.
WARNING! Risk of contact with high-speed rotating fan blades. Can cause serious injury or death. Open all
local and remote electric power-supply disconnect switches, verify with a voltmeter that power is off, and
verify that all fan blades have stopped rotating before working in the unit cabinet or on the fan assembly. If
control voltage is applied, the fan motor can restart without warning after a power failure. Do not operate the
unit with any or all cabinet panels removed.
CAUTION: Risk of exposure to harmful noise levels. Can cause hearing injury or loss. Depending on the
installation and operating conditions, a sound pressure level greater than 70dB(A) may arise. Take
appropriate technical safety measures. Operating personnel must wear appropriate, OSHA-approved PPE
and observe all appropriate hearing-protection safety requirements.
CAUTION: Risk of contact with hot surfaces. Can cause injury. The fan motor, and some electrical
components are extremely hot during unit operation. Allow sufficient time for them to cool to a touch-safe
temperature before working within the unit cabinet. Use extreme caution and wear appropriate, OSHA-
approved PPE when working on or near hot components.
8 Maintenance
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