7.2 Control cabinet of fuel treatment system – Troubleshooting
Water alarm
Cause
Corrective action
When the maximum water level is
reached, the water level electrode
opens the water drain valve and
water is discharged. If the opening
period of the valve exceeds a
preset limit (4 minutes), the pump
will switch off and an alarm is
initiated.
1. Press illuminated pushbutton 'Water alarm' for acknowledgment.
2. In addition to the automatic water drain function, water can also be
drained manually: Press illuminated pushbutton 'Water drain'.
The water drain valve opens.
Pump fault
Cause
Corrective action
The drive motor is equipped with
an overload protection. If the
maximum permissible current
consumption is exceeded, e.g. in
case of a blockage or dry-running,
the motor protection relay
triggers and the pump is switched
off.
u
Reset motor protection relay.
Pre-alarm
Cause
Corrective action
The differential pressure
exceeded 1.3 bar.
u
Replace coalescer filter element (→ Page 226).
Replace filter element
Cause
Corrective action
The max. permissible differential
pressure exceeded 1.5 bar. If the
coalescer filter element is not
replaced, pressure will increase
further and the safety valve will
open. Fuel will be led via the
bypass directly into the overflow
tank.
1. Replace coalescer filter element (→ Page 226).
2. Press illuminated pushbutton 'Water alarm' for acknowledgment.
MS15034/00E 2018-08
| Troubleshooting | 103
TIM-ID: 0000007734 - 009
Summary of Contents for 8V4000M*3 series
Page 1: ...Operating Instructions Diesel engine 8V4000Mx3x MS15034 00E...
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