6
RD..
and VD..
– Roof fans
Installation and Operating Instructions
– It is recommended to maintain a system maintenance book and enter the tests and test results carried out.
Compare the results with the results of previous audits. If the parameters vary, you should always contact the
manufacturer.
– The instructions in the maintenance manual of the electric motor must be observed.
4.1 Cleaning
–
The unit must be fully isolated from the mains power supply before any cleaning work!
Wet cleaning under tension can lead to electric shock.
– Regular inspection, and with periodic cleaning is required in order to avoid imbalance due to pollution. Clean the
flow area of the fan.
– Do not use aggressive, paint solvent agents!
– High-pressure cleaners or water jets are not permitted!
4.2 Information – Fault causes
WARNING
m
Error/Fault
Causes
Solution
Fan does not start
No voltage, phase missing
Check voltage
Impeller blocked
Clear blockage, clean, have impeller repla-
ced by manufacturer if necessary
Motor blocked
Check motor, have replaced by manufactu-
rer if necessary
Fuse tripped
Short-circuited coil/ground fault in motor Have motor replaced by manufacturer
Supply line/connection damaged
Replace parts, have motor replaced by ma-
nufacturer if necessary
Connected incorrectly
Check connection, change
Residual current device
tripped
Motor insulation damaged
Have motor replaced by manufacturer
Supply line insulation damaged
Replace supply lines
Motor protection
switch triggered
Tight bearing
Have bearing replaced by manufacturer
Impeller touching
Clean, have impeller replaced by manufactu-
rer if necessary
Incorrect operating point
Check suitability of fan, Check/keep inflow
and outflow clear
Contaminated motor
Clean
Vibrations
Contamination
Clean
Bearing damage
Have bearing replaced by manufacturer
Incorrect operating point
Check suitability of fan, Check/keep inflow
and outflow clear
Attachment-related resonance
Check or repair attachment
Incorrect direction of rotation
Check/modify connection
Impeller imbalanced
Rebalancing by manufacturer
EN
Abnormal noises
Incorrect operating point
Check suitability of fan, Check/keep inflow
and outflow clear
Grinding impeller
Clean, have impeller replaced by manufactu-
rer if necessary
Bearing damage
Have bearing replaced by manufacturer
Mechanical damage
Carry out maintenance
Incorrect direction of rotation
Check, modify connection
Power consumption too
high
Incorrect operating point
Check suitability of fan, Check/keep inflow
and outflow clear
Grinding impeller
Clean, have impeller replaced by manufactu-
rer if necessary
Bearing damage
Have bearing replaced by manufacturer
Fan does not perform
(speed)
Incorrect operating point
Check suitability of fan, Check/keep inflow
and outflow clear
Incorrect voltage
Check/modify connection
Bearing damage
Have bearing replaced by manufacturer
Contamination
Clean
Insufficient backflow
Widen backflow openings
Incorrect direction of rotation
Check/modify connection
Содержание RDD 200/4 EX
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