Commissioning and Maintenance CAIRplus
68 PR-2009-0096-GB • Subject to modifications • R8-10/2015
8.4.5 Commissioning and Maintenance of EC fans
• Please also observe the instructions of the component manufacturer!
8.5 Filter assembly
8.5.1 Commissioning of filter assembly
DANGER!
• Please consider the safety instructions on page 5 and page 55ff when performing
all the described activities!
Complete the following commissioning steps:
• Check filter assembly and installed filters for damage.
• Check that filter assembly is correctly fitting in the mounting frame.
• If required, clean installation dust before the filter assembly and unit parts in the
direction of airflow.
• Repeat cleaning before installing filters from grade F9 into the air handling unit and
ductwork.
• Put the fan into service and take readings of the initial pressure difference (if
available).
Hazardous voltage can result in death!
Waiting time at least 3 minutes!
9 Due to the use of condensers, danger of death continues even after switching off
the unit by directly touching live components which are still live owing to fault
states.
• Therefore only remove or open the controller casing after a 3-minute
waiting time after the unit has been disconnected to the mains supply line!
Danger due to automatic restart!
9 The fan/engine can be automatically switched on and off for functional reasons.
9 After a power failure or power supply breakdown, the fans automatically restart
when mains power returns again!
• Wait until the fans have come to a standstill before approaching them.
9 With external rotor motors, the external rotor rotates during operation!
Risk of burns due to hot surfaces!
9 Temperatures above 85 °C can occur on the motor surfaces, particularly on the
controller casing!
9 Severe burns can be the consequence.
ELECTRICAL HAZARD AND DANGER OF ROTATING UNIT PARTS WITH
SHARP EDGES!
• OBSERVE PERSONAL PROTECTION MEASURES
• Please consider the safety instructions on page 5 and page 55ff when
performing all the described activities!
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