Maintenance & Troubleshooting
Vertiv | Liebert CRD10 | User Manual
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7.5
Air Filter Maintenance
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.
Air filter filtration class is America MERV8/Europe G4 standard.
1.
Set the filter maintenance and alarm logic to ensure efficient operation. The fan operating time is 90 days by
default (though the time is set and customized based on the local operating environment); the filter
maintenance alarm is triggered based on the configuration and settable operation time.
2.
Check and replace the filter according to its dust and clogging condition. During normal operations, the filter
needs to be checked once a month and replaced as per the requirement.
NOTE: Cut off the power before replacing the filter. Clear the fan operating time after replacing the
filter.
7.6
Fan Kit Maintenance
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
manufactur
ers’ specifications. Opening or removing t
he 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.
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.
Regular checking of the EC fans includes inspection of the motor operating status, fan impeller state, and
the co- operative clearance between the fan and wind-leading ring.
Check whether the fan or the wind-leading ring has been installed properly and firmly. Ensure that the fan
blades do not hit the adjacent metal plates under any circumstances. Clear the clogging element of the air
duct to avoid damage to the refrigerating system and other system kit due to reduced air volume.
In addition, the fan fault alarm of the control board and alarm point of the EC Fan is connected in series. If
