6 Start-up
6.1 Prerequisites for commissioning
Attention!
•
During commissioning, unexpected and hazardous conditions can arise in the entire
installation due to defective adjustments, defective components or incorrect electrical
connections. Remove all persons and objects from the hazardous area.
•
Do not start the fan until all safety instructions (DIN EN 50110, IEC 364) have been
checked, the fan is out of range (DIN EN ISO 13857) and danger can be ruled out.
6.2 Check before commissioning
Observe the following points before the initial start-up:
1. Installation and electrical connection have been properly completed?
2. Has any leftover installation material and other foreign material been removed from
the fan area?
3. Have all objects (tools, etc.) been removed from the air
fl
ow?
4. That safety devices -if necessary- are mounted (EN ISO 13857)?
5. The impeller is out of reach?
6. Are the condensation water drains holes (as far as available) open or respectively
closed according to the suitable installation position?
7. The threaded gland bushings are tightened.
8. The tubular housing
fl
ap (if available) is correctly closed and screwed together.
9. Connection data complies with the speci
fi
cations on the rating plate?
10. Is the overheating protection equipment of the motor properly connected?
11. When operating with a frequency inverter, ensure that the function
"over-modula-
tion"
on the frequency inverter does not lead to an increase in the resonance
oscillations. It is mandatory that the overmodulation is switched off.
12. When installing fans in devices, ensure there is a suitable inlet opening through a
minimum installation distance, which corresponds to the rough diameter of a fan.
Start-up may only begin when all safety instructions have been veri
fi
ed and any
hazards have been ruled out.
•
Check whether the direction of rotation of the impeller corresponds to the arrow
af
fi
xed on the tubular housing or the arrow on the fan rating plate.
•
Motors with a rated output greater than or equal to 4 kW are generally connected via
a "star-delta starting switch".
•
If the fans were stored for a longer period or were not in operation, the insulation
resistance of the motor winding must be measured before start-up. In the case of
values below 1.5 M
Ω
the windings must be dried.
Assembly instructions
MAXvent
Start-up
L-BAL-F054-GB 2018 Index 005
Part.-No. 00501414-GB
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