Troubleshooting - NetterVibration NEG Series Operating Instructions Manual

Troubleshooting

9 Troubleshooting
Observe the safety instructions in chap. Safety, from page 6 on.
Troubleshooting of the vibrators may only be performed by regularly
Expertise and
trained, authorised and qualified personnel. Work on the electrical system
regulations
may only be carried out by a qualified electrician.
The qualified personnel has to work exclusively with tools suitable for the
application.
In the case of unauthorised intervention in the NEG/NEH there is no longer
any warranty claim.
Before any troubleshooting the NEG/NEH must be safely disconnected
from the electrical mains. The procedure is as follows:
1.
2.
3.
4.
5.
Fault
Trouble-
shooting
Vibrator does not start
or runs at too low
speed
Vibrator speed drops
under load
Switch off NEG/NEH.
Secure against unintentional switching on.
Determine that NEG/NEH are voltage free.
Earth and short-circuit.
Cover and fence off neighbouring live parts.
Possible cause
Phase interruption
Mains voltage too low
Wiring wrong
Inadequate contact of a connec-
tion point
Phase interruption
Incorrectly dimensioned connec-
tion cable
Overload
Mains voltage too low
Corrective action
Check fuse and connection cable,
replace, if necessary.
Check mains voltage and cable cross-
section and, if necessary, adjust or
replace cable.
Check circuit diagram.
Check connections in the terminal
box, tighten terminal plate nuts.
Check fuse and connection cable,
replace, if necessary.
Check cable cross section and re-
place cable, if necessary.
Check setting of unbalance, reduce
unbalances.
Check mains voltage and cable cross-
section and, if necessary, adjust or
replace cable.
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