Troubleshooting/Maintenance/Repair; Safety Information; Troubleshooting - SystemAir MUB 042 Montage- Und Betriebs-Anleitung

GB
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Troubleshooting/maintenance/repair

12.1 Safety information

♦ Troubleshooting/maintenance/repair may only be carried out by adequately qualified persons, details see Table 1
Qualifications, page 6.
♦ Wear protective equipment during all work in the vicinity of the fan, details see 2.2 Personal protective equipment,
page 6.
♦ Observe the 5 rules of electrical safety, see 2.3 5 rules of electrical safety, page 6.
♦ Abide by the system-related conditions and requirements of the system manufacturer or plant constructor.
♦ The rotor must be at a standstill.

12.2 Troubleshooting

Table 11 Troubleshooting
Problem Possible causes
Fan does not run Rotor imbalance
smoothly
Soiling on the rotor
Material decomposition on the
rotor due to aggressive material
conveyed
Rotor rotates in wrong direction
Deformation of rotor due to
excessive temperature
Vibrations, oscillations
Air output of fan too Rotor rotates in wrong direction
low
Pressure losses too high
Flow regulators not or only
partly open
Intake or pressure ducts are
blocked
Grinding sounds Check if the duct connection
when starting or (inlet side) of the fan is strained
operating the fan
Rotor rotates in wrong direction
Thermal contacts/
resistors have
triggered
Motor overheated
Capacitor (if used) not or not
correctly connected.
Motor blocked
Fan does not reach Defective motor winding
nominal speed
Improperly aligned drive motor
Control units (if used) such as
frequency converter or
transformer are set incorrectly.
Mechanical blockage
| 001
Troubleshooting/maintenance/repair |
Remedy
Rebalancing by a specialist company
Clean carefully, rebalance
Contact Systemair
Change direction of rotation if possible, otherwise contact
Systemair
Ensure that the temperature does not exceed the certified
value/Install new rotor
Check the installation of the fan/check the duct system,
see 8 Installation, page 15
Change direction of rotation if possible, otherwise contact
Systemair
Optimize the line routing
Check opening position on site
Remove the blockage
Loosen the duct connection (inlet side) and realign it.
Change direction of rotation if possible, otherwise contact
Systemair
Check the cooling impeller (if used), measure the motor
winding (if possible) / contact Systemair
Connect the capacitor correctly
Contact Systemair
Contact Systemair
Contact Systemair
Correct the settings of the control units.
Remove the blockage
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