Xylem Fire diesel pump D Series GEN D Series - Manual (Page 66)

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The diesel pump does not start from
any of the controls or it starts only
from one of the two batteries.
If the batteries are efficient and no attempt is made to
start, check the starting relays.
The diesel pump does not stop
when the STOP button is pressed
KA1 relay faulty
Failure of the electric stop device located on the engine
Control unit faulty
The engine pick-up is disconnected or damaged
When the engine is running, the
starting motor remains on
Control unit faulty
The engine pick-up is disconnected or damaged
The control unit revolution counter is not properly
calibrated
The diesel pump does not stop from
the key-operated control
The KA1 relay for electric stop device control is faulty:
request spare part
Electric stop device faulty : request spare part
If an emergency start was made, the diesel pump must be
stopped by operating the stop lever, otherwise check the
operation of the electric stop device.
The control unit display shows AUTO
operation even when the position of
the selector switch is changed
Control unit faulty
Selector switch contact connections loose or disconnected:
check the connections (refer to enclosed wiring diagram)
The control unit display does not
show the engine revolutions Control unit failure
The engine pick-up is disconnected or damaged
The heater does not work Check the electrical connection
Check the QU2 fuse in the control panel
Starting sequence – technical notes
The starting sequence in AUTOMATIC MODE is as follows:
0. Selector switch set to AUTO position
1. The engine is started only if the starting pressure switch changes status.
If there is a request to start, the control board commands the starting motor to start-up
the engine. If the engine does not start, the board makes max 6 attempts to start, each
lasting 10 seconds (each attempt is made by alternating the activation of the two
starting relays). If the engine has not started after the 6 automatic start-up attempts, the
failure-to-start alarm is triggered (and indicated on the display and LED).
2. When the motor is running, the board checks the rpm’s and if they exceed the starting
threshold the pump-running indicator light comes on (indicated on the display) and the
starting motor is automatically disconnected.
WARNING