
Troubleshooting
22
9
Troubleshooting
In the case of malfunctions of the NTK proceed as follows:
Malfunction Possible cause
Corrective action
No start
Silencer polluted
Clean silencer.
Compressed air
supply
Check if there is enough pressure at the NTK. Check
valve. A 3/2-way valve is strictly required, so that the
supply line to the NTK is vented.
Cover loose
A leaky cover leads to standstill of the NTK.
Tighten screws.
Line cross-
sections
Observe recommended cross-sections (see Ch.
Technical data, from page 7 on).
Line too long
between valve
and NTK
Leads to a slow start and an eventual standstill of the
piston in the middle position.
If necessary, put a controlled 3/2-way air valve before
the NTK.
Exhaust air throt-
tled too much
Open the throttle valve further. Clean silencer.
Thread of grom-
met is too long
Check if the housing is deformed.
In case of deformed housing, have the NTK checked
by
Netter
Vibration
.
Tension during
installation
Ensure a flat contact surface.
Temperature
below 5 °C
Use NT-Version or heat the environment.
No 3/2-way valve
or wrong cross
section
Use a 3/2-way valve with adequate cross section.
Rattling
Screws loose
Check fastening screws.
Power loss
Lubrication is
missing
Check the function of the mist lubricator.
NTK polluted
Disassemble NTK and clean it.
Wear
Check piston and housing for visible wear (deposit on
piston and inside housing). If wear is found clean the
NTK completely (see page 21 ".../complete clean-
ing").
Alternatively send the NTK to
Netter
Vibration
or re-
place it.
Check the function of the mist lubricator.
Operating pres-
sure too low
Check the pressure at the inlet of the NTK during
operation. If necessary, increase the pressure. Check
line cross-sections.
Malfunctions
and causes