Instructions

21
10 Maintenance and servicing
DISCON-
NECT
POWER
SUPPLY
When working on the vibrators, these must be safely disconnected from the elec-
trical mains. The procedure is as follows:
1. Switch off vibrator.
2. Secure against unintentional switching on.
3. Determine that NEA and NEG are voltage-free.
4. Earth and short-circuit.
5. Cover and fence off neighbouring live parts.
WARNING
The following maintenance work must be carried out regularly by trained person-
nel with extensive knowledge of EN 60079-17 (zone 22):
a) Check the screw connections
b) Check the ball and roller bearings
c) Relubricate roller bearings
d) Check operating hours (bearing life)
e) Check cable supply line
f) Replace O-rings and plastic seals every two years
Other maintenance and repair work are to be carried out exclusively by
NetterVibration.
Authorised and specialised staff may also perform the following work on the vi-
brators:
The adjustment of the unbalance discs with the removal of the unbal-
ance covers.
The electric connection with the removal of the terminal block cover.
Please observe the safety instructions in chapter 2 when service on the
unit is done.
WARNING
Retightening:
Screw connections must be checked and, if necessary, retightened after 1 h op-
erating time (after initial commissioning) and thereafter regularly (generally
monthly). Observe the specified torques (see chapter 6.1).
DANGER
The condition of the ball and roller bearings must be checked regularly.
The replacement of defective bearings or bearings which have reached the end
of their service life must be made by NetterVibration.