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Installation and Operating Instructions
CHAPTER 4
SERVICING AND
MAINTENANCE
m
DANGER
nmr
m
WARNING
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Smoke exhaust roof fans F400/F600 – B VD
3 .10 Operation
Regularly check the proper functioning of the fan:
− Unhindered running of the impeller
− Check the air gap (see table 3.5)
− Check power consumption
− Check any vibrations and noises
− Formation of dust and dirt in the casing or on the motor and impeller
With regard to function preservation and the installation of elec . circuit systems, the relevant provisions of the
VDE rules and the national regulations shall apply, particularly the "guideline on fire protection requirements
pertaining to circuit systems" . The fan must remain functional during the intended smoke extraction period
(function preservation) .
4 .0
Servicing and maintenance
m Danger to life due to electric shock!
m Limbs can be injured due to the rotating impeller .
Before any maintenance or inspection work or before opening the terminal compartment, the device is to be fully iso-
lated from the power supply and secured against unintended restart! Wear suitable protective clothing.
− Excessive deposits of dirt, dust, grease and other materials on the impeller, motor and safety grille especially bet-
ween the inlet nozzle and impeller is to be avoided and has to be prevented by periodical cleaning.
− Functional tests must be carried out at max. six-monthly intervals, and upon recommissioning in case of longer
periods of standstill.
− Maintenance must be carried out once annually, otherwise upon recommissioning.
– Servicing and maintenance work must only be carried out by specialists according to section 1.6.
– Perform maintenance based on maintenance plan in section 7.
− Please check:
• Screw connections, particularly impeller fastening. Without loosening screws!
• Housing / impeller surface coating (e.g. rust, paint damage)
• Bearing noises
• Damage
• Vibrations
• Deposits of dirt
• Current consumption
• Function of the safety components
• Motor lubrication/motor bearing
The smoke exhaust fans with motor sizes 160 to 250 have lubrication nipples must be lubricated according to the
information on the motor type plate.
Lubricate motors with relubrication device according to the information on the motor type plate!
Only specified lubricants are permitted!
− It is recommended to perform 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 manufacturer must be observed!
− The smoke exhaust fan must be disposed of after smoke extraction operation!
− Continued use is not permitted in any case!
4 .1
Cleaning
m An insulation fault can give you an electric shock!
The fan must be fully isolated from the power supply and secured against restarting before cleaning!
Wear suitable protective clothing.
– Clean fan flow area, impeller, struts and motor.
– Regular inspection, with periodic cleaning if necessary is required to avoid imbalance due to contamination. Clean fan
flow area.
– Do not use aggressive cleaning agents!
– High pressure cleaners or water jets are not permitted!
4 .2
Repairs
Self- repair attempts are prohibited.
Repair work on the smoke exhaust fans must only take place at the factory by returning the unit!
Contact Helios customer service.
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