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Troubleshooting
8
Troubleshooting
In the case of malfunctions of the NVV proceed as follows:
Malfunctions
and causes
Malfunction
NVV does
not start
NVV has too
little power
Power loss
Possible cause
Corrective action
Compressed air
Check if there is enough pressure at the NVV.
supply
Check the pressure control valve.
Wrong position of
Briefly tap the vibrator's nosepiece onto a firm sur-
the rotor
face.
Vane jammed, too
Check position and length of the vane (see chap.
long, missing or
Maintenance, page 14).
incorrectly inserted
Hose defective or
Check the hose for damage and for correct fixing,
torn off
as well in the handpiece (through the inspection
window).
Line cross-sections
Observe the recommended cross-sections
(see chap. Technical data, page 7).
Check air pressure and supply lines.
Wear
Check the vane (see chap. Maintenance, page 14)
and the rotor for visible wear. For wear criteria, see
page 13.
In addition, check the function of the mist lubricator.
NVV polluted
Clean the NVV (see chap. Maintenance, page 13).
15
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