MANUAL DVP002

10
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Operation
Preconditions
♦ Installation and electrical connection have been
correctly performed.
♦ Before switching the fan on, check for externally
visible damage and ensure that the protective
equipment functions properly.
♦ Inlet and outlet are free.
♦ Cable glands are tight.
♦ Safety devices have been fitted.
Tests
Do the tests requested in the commissioning report (17 Commissioning Report, page 13)
11 Operation
Safety information
♦ Observe 2 Important safety information, page 1
Warning: Risk by careless use of aggressive media.
Careless use of aggressive media can lead to very severe injuries.
♦ Pay attention to the safety data sheet of the chemical substances transported with the fan.
12 Troubleshooting/maintenance/repair
Safety information
♦ Observe 2 Important safety information, page 1
♦ Pay attention to the safety data sheet of the chemical substances transported with the fan.
12.1 Troubleshooting
Table 5 Troubleshooting
Problem Possible causes
Remedy
Fan does not run
smoothly
Impeller imbalance
Rebalancing by a specialist company if possible,
otherwise contact Systemair.
Soiling on the impeller Clean carefully, rebalance
Material decomposition on the
impeller due to aggressive
material conveyed.
Contact Systemair
Impeller rotates in wrong
direction.
Change direction of rotation if possible, otherwise contact
Systemair.
Deformation of impeller due to
excessive temperature.
Ensure that the temperature does not exceed the certified
value/Install new impeller.
Vibrations, oscillations
Check the installation of the fan/check the duct system,
see 8 Installation, page 7.
Fan operation in resonant
frequency range
Consider chapter 9.2 Variable-speed fans, page 9
Air output of fan too
low
Impeller rotates in wrong
direction.
Change direction of rotation if possible, otherwise contact
Systemair.
Wrong wiring configuration (e.g.
Y instead of Delta).
Check and possibly correct the wiring configuration.
Pressure losses too high. Optimize the line routing.
Flow regulators not or only
partly open.
Check opening position on site.
Intake or pressure ducts are
blocked.
Remove the blockage.
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