Elektror CF Series - Troubleshooting; Disturbances; Table 16: Disturbances of Fan Operation

Operation of the fan Operating manual - Fan CF-C
56 of 84 www.elektror.com 2004930 10.19/0.2
EN
immediately perform a search for errors.
Risk of electric shock
DANGER
It is possible to touch live components and cause fatal injuries.
−
Care should be taken of the danger zones of live parts.
Warning against burns
WARNING
Fan housing becomes hot during operation.
−
Do not touch the fan until the housing has cooled down.
8.7.2 Troubleshooting
Error correction eliminates the disturbance. If a malfunction is detected, immediately remove
the fan's operating errors.

If the determination of the error pro
ves the need to replace certain components of the fan,
the exchange is considered repair. Information regarding repairs can be found in the
chapter
8.9 "Repairs".
8.7.3 Disturbances
Table 16: Disturbances of fan operation
Disturbance Possible cause Countermeasure
The impeller does not run
smoothly
Deposits on impeller blades The impeller should be thoroughly cleaned
The impeller shows wear The impeller must be replaced
The impeller exhibits thermal
deformations
The impeller must be replaced
Fan stresses caused by uneven
foundation
Remove the foundation fastening and align
the foundation. Then re-attach the fan.
Incorrect alignment of vibration
isolators
Correct the alignment
Pipelines mounted with stress Use flexible pipe connections
(compensators)
The fan generates noise
similar to rubbing
The impeller rubs against the
inlet cone
Unscrew the housing cover with the
suction connector and set it again
The electric motor generates
noises
Check the electric motor to eliminate noise
from the bearings, or replace the bearings
Noise from bearings Check the bearing system to eliminate
noise from the bearings, or replace the
bearings
The medium leaks around
the hub seal
The seal is damaged or worn Replace the seal
Permanent exceeding of the
current consumption value
on the nameplate
Too much air mass Reduce the air flow with the throttle until
the correct current consumption is reached
Different rotational speed in the
60 Hz network
Check the frequency