Mosa DSP 2x400 PSX, Use And Maintenance Manual, Spare Parts Catalog

Page: 31 / 56

TROUBLE SHOOTING DSP - EP5
M
40.2
18/11/05 M40DSP/EP5-GB
PROBLEMS
POSSIBLE CAUSE WHAT TO DO
P1 Voltmeter shows no voltage
or low voltage but actual
voltage at the sockets is OK.
1) Voltmeter malfunction 1) Replace the voltmeter.
P2 No three-phase voltage
present at the socket(s).
1) Differential switch not
inserted
2) Differential switch
malfunction
1) Turn on the switch.
2) Replace the switch.
P3 No single phase voltage one
socket but voltmeter reading
is normal and there is
voltage on the other sockets.
1) Push in the thermal switch.
2) Replace the thermal switch.
1) Check the level of the electrolyte. Fill or replace the
battery.
2) Carry out de-aeration on the fuel system. See engine
operating manual.
3) Push in the thermal switch. In case the problem persists,
check the electrical circuit and eliminate the problem.
Call an authorised service centre.
4) Push in the thermal switch. In case the problem persists,
check the electrical circuit and eliminate the problem.
Call an authorised service centre.
5) See engine manual
1) Check oil level.
2) Replace the malfunctioning sensor.
3) Replace the protection.
1) Intervention of thermal
switch due to excessive
current.
2) Thermal switch malfunction.
MOTOR
1) Disconnect all outputs on the generator except for
those on the condensers and re-start machine; check
for voltage on condensers.
P4 No voltage present.
(See problem P9)
1) Short circuit present on the
generator outputs.
1) Low battery voltage, battery
dead or defective.
2) Presence of air in the fuel
supply circuit.
3) Starting system thermal
switch
4) Fuel injection pump thermal
switch
5) Engine solenoid
P1 The engine does not start
or stops immediately after
startup.
P2 Engine stops due to
intervention of EP5/ES.
1) Engine temperature too high
or insufficient oil pressure.
2) High temperature sensor or
oil pressure defective.
3) EP5/ES protection defective.
P3 The battery is not charged. 1) Battery charger alternator
defective.
2) Battery charger warning light
defective.
1) Replace
2) Replace
P4 For other problems, refer to
the attached engine manual
WELDING WITH V.R.D.
P10 The welding tension after
3 sec isn’t less enough
(plus in 12V dc)
1) Net R.C. defective or
disconnected from + or -
welding socket
2) WDC defective.
1) Check the net R.C. Check the connections.
2) Replace the WDC.
GENERETING
generation unless the output going to the condensers)
and check the capacity of the condensers. Restart the
machine, if there is still no output, replace the alternator.
© MOSA 1.1-11/05