Troubleshooting - Schneider Airsystems UNM 400-10-50 W Original Bedienungsanleitung

GB
BAM/CPM/SUM/UNM/ZPM
4. Allow the compressor to warm up, switch
it off.
5. Refit intake filter, seal watertight with
Scotch tape.
6. Switch off the compressor. Disconnect
the power supply.
7. Drain condensate.
2.8

Troubleshooting

Observe the safety instructions!
Problem
A Protective motor
switch interrupts
power supply.
B Pressure relief does
not function
C Compressor
not start when
switched on.
D The compressor
starts up briefly
when the switch-on
pressure is reached
or hums,
switches off auto-
matically.
II/14
Cause
In case of malfunctions (e.g.
overheating;
extension cable too long or
with incorrect cross-section),
the protective motor switch is
tripped.
The pressure relief is shut
down by an interruption of the
power supply or voltage drop in
the mains when the compres-
sor is switched on.
does Vessel pressure is higher than
switch-on pressure.
Power supply faulty.
Protective motor switch inter-
rupts power supply.
Pressure switch defective
Mains connection cable longer
than permitted or the cross
section is too small.
then
8. Depressurise the compressor.
Store the compressor dry and do not subject
it to large temperature fluctuations.
2.7.2 Disposal
Dispose of the unit and packaging materials
according to applicable regulations.
Remedy
Switch off the compressor. Wait
low voltage; a short while. For compressors
with an external protective motor
switch:
Switch on the compressor.
If the protective motor switch is
triggered again: switch off the
compressor. Disconnect the pow-
er supply. Contact the service
partner.
Switch off the compressor. It de-
pressurises. Switch on the com-
pressor.
Relieve pressure in the vessel
until the pressure switch is acti-
vated automatically.
Have the power supply checked
by a qualified person (service
partner).
See item A.
Have
changed by a qualified person.
Check connection cable length
and
Chap. 2.4.4)
actuate the
the pressure
cable cross-section
switch.
switch
(see