Troubleshooting/maintenance/repair |
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13
Troubleshooting/maintenance/repair
13.1 Safety information
♦
Troubleshooting/maintenance/repair may only be carried out by adequately qualified persons, details see Table 1
♦
Wear protective equipment during all work in the vicinity of the fan, details see 3.2
♦
Observe the 5 rules of electrical safety, see 3.3
♦
Abide by the system-related conditions and requirements of the system manufacturer or plant constructor.
♦
The impeller must be at a standstill.
♦
Pay attention to the safety data sheet of the chemical substances transported with the fan.
Danger
Loss of explosion protection
• The manufacturer must always be consulted before any maintenance or repair work is carried out!
Repairs should preferably always be carried out by the manufacturer! Exceptions can be made for non-
relevant components such as terminal boxes, screwed cable connections, etc. These can also be dealt
with on-site by the operator's qualified staff (authorised personnel). Non-compliance will result in the
ATEX certification being revoked!
• For ATEX-certified products, the repair or replacement of fan components is expressly only permitted
after consultation with the manufacturer and only if the manufacturer's original parts are used!
13.2 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 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.
Grinding sounds
when starting or
operating the fan
Check if the duct connections of
the fan are strained.
Loosen the duct connections and realign it.
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