NORD Drivesystems Berges-VG - Manual (Page 26)

7 Troubleshooting
ƒ If faults or malfunctions occur when operating the BERGES attachments VG,
please check the possible causes of the fault on the basis of the table below.
ƒ If the fault cannot be remedied by any of the measures listed in the table or if the
fault which has occurred is not attributable to one of the causes specified in the
table please inform one of the BERGES service addresses.( See Service adresses,
Chapter 8, Page 27 )
Caution!
If faults necessitating repair of the VG occurs during the warranty period, such
faults may be remedied only by BERGES After-Sales Service. We advise you to
enlist the services of our After-Sales Servicing Department even if faults whose
cause cannot be clearly determined occur after the warranty period has expired.
Faults Possible cause Remedy
The drive does not start Main motor not connected or Check motor connection
connected incorrectly
Clearly audible running noise of Wide V-belt contacting base Set speed limitation correctly
the variable-speed drive of hub
Changing running noises of the Bearing defective Replace dfective bearings ( Consult
reduction gear After-Sales Sevicing Department )
Excessive bearing play Set bearing play ( Consult After-
Sales Department )
Execssive external loading of Correct loading to nominal data
drive or output
Rotational speeds specified on Speed limitation not correctly Set speed limitation correctly
the rating plate are not being set stellen
reached
Incorrect wide V-belt fitted Fit correct wide V-belt ( See related
accompanying documents )
Indication of scale insert incorrect Scale insert incorrectly fitted Fit scale insert at max. set output
speed
Motor of the electrical remote Motor not connected or Check motor connection
control does not turning connected incorrectly
Adjustment spindle blocked Clear blockage with centring thread
of the motor of the electrical remote
control or turn the fan impeller
VG overheating Fan cowl of the drive motor and/ Clean fan cowl, motor, fan cover
or VG heavily fouled and surface of VG
Drop in speed or torque Belt tension of the VG too Fit a new wide V-belt
low - wide V-belt worn
Guide of variable-speed and/or Replace variable-speed and/or
spring pulley worn spring pulley
Drive starts sluggishly or not Output subject to hight loading Correct loading to nominal loading
at all
26
Troubleshooting