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Maintenance and servicing
8
Maintenance and servicing
Observe the safety instructions in chap. Safety, from page 5 on.
Information regarding tightening torques for screws and nuts can be found
Technical data
in Ch. Technical data, page 7.
Expertise and
Maintenance and servicing of the vibrators may only be performed by reg-
regulations
ularly trained, authorised and qualified personnel. Work on the electrical
system 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 NED there is no longer any
warranty claim.
Before all maintenance and servicing work the NED must be safely dis-
connected from the electrical mains. The procedure is as follows:
1.
2.
3.
4.
5.
Maintenance of the NED must be carried out as follows:
Maintenance
plan
Interval
If required (depending
on operating conditions)
After one hour operation
after initial start-up
Monthly
Every 6 month
Every 2 years
At least every 4 years
When the bearing life is
reached
Other maintenance and repair work are to be carried out exclusively by
Netter
Switch off NED.
Secure against unintentional switching on.
Determine that NED are voltage free.
Earth and short-circuit.
Cover and fence off neighbouring live parts.
Action
Clean the NED regularly with a wet cloth to remove dust de-
posits.
Check screw connections and retighten if necessary.
Check screw connections and retighten if necessary.
Check bearing for irregular bearing noise. Replace damaged
bearings or bearings whose service life has been reached.
Check cable supply line.
Check proper condition of connecting cables and plugs.
Replace O-rings and plastic seals.
Check proper condition of electrical systems and stationary
electrical equipment.
Replace the bearings and replace them with equivalent bear-
ings.
Vibration.
19
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