Troubleshooting; Spare Parts - NetterVibration NTP Series Operating Instructions Manual

9 Troubleshooting

Fault Possible Cause
Will not start Silencer
Compressed air supply
Cover loose
Line cross-sections
Line between valve and
NTP B E too long
Exhaust over-throttled
Grommet thread too long
Distortion from mounting
Rattling Screws loose
Power drop No lubrication
Unit soiled
Wear
Specification
Pressure too low

10 Spare Parts

When ordering spare parts, please give the following details:
1. Type of unit
2. Description of spare part
3. Required quantity
Please note: Piston and housing are matched to each other and can only
be delivered together.
Remedy
Clean silencer
Check pressure on device! Is enough
pressure available? Check valve. A 3/2
way valve is compulsory, so that the
supply line to the device is vented.
An unsealed cover causes standstill
Tighten screws.
Observe minimum cross-sections. See
specifications under "Installation".
Causes slow starting and possibly
standstill of piston in mid-position. If
necessary, install a pilot-controlled 3/2
way valve in front of the vibrator.
Open up throttle. Check silencer (is air
clearance sufficient?).
Can cause deformation of housing (if
this has already occurred, return de-
vice!).
Check mounting surface is level.
Check the fastening screws.
Check that lubricator is working cor-
rectly.
Return device!
Check device and piston for visible
signs of wear (if wear is evident, return
device!) See also notes in chapter 10
"Spare Parts".
Check size of device. Has the correct
size been selected?
Check pressure at the device inlet (!)
during operation. Increase pressure, if
necessary. Are the line cross-sections
OK?
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