Maintenance / Remedying Of Faults; Defects And Remedying - SystemAir Multibox MUB Serie Instrucciones De Montaje Y Servicio

10

Maintenance / remedying of faults

WARNING
Hazard from electrical voltage
›
Remedying of faults and maintenance only by a trained electrician or trained and instructed qualified personnel.
›
Pay attention to the industrial protection regulations in troubleshooting.
›
Pay attention to the 5 rules of electrical engineering:
–
clear (all-pole separation of an electrical system from live parts)
–
secure against switching on again
–
establish freedom from voltage
–
earth and short-circuit
–
cover or fence off neighbouring live parts.
10.1

Defects and remedying

Disturbance
Multibox runs loud
Air volume of Multibox too low
Grinding sounds in operation or
start of the Multibox
Thermo-contacts/cold conductor
have reacted
Multibox does not reach no-minal
speed
Table 7: Troubleshooting
46
Possible causes
Rotor out-of-balance
Adhesions to rotor
Wrong direction of rotation of rotor
Material decomposition on rotor due to exces-
sive tem-perature
Deformation of rotor due to excessive tem-
perature
Wrong direction of rotation of rotor
Loss of pressure in lines too high
Throttle organs not or only partly open
Suction or pressure paths blocked
Suction line installed twisted
Capacitor not or not correctly connected
Wrong direction of rotation of rotor
Motor blocked
Electrical switching devices set wrongly
Motor coil defective
Drive motor has been de-signed wrongly
Remedy
Re-balance by specialist company
Clean carefully, re-balance if necessary
Change direction of rotation
Contact manufacturer
Contact manufacturer,
install new rotor,
check bearings
Change direction of rotation
Different line guidance
Check opening positions on site
Remove obstacles
Loosen suction line and re-align.
Connect capacitor
Change direction of rotation
Contact the manufacturer
Check and possibly reset setting of switching
device
Contact manufacturer
Contact manufacturer for check of start torque