Xylem GEN firefighting booster sets - Manuale (Pagina 40)

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13.3 Electric panel 13.3 Electric panel 13.3 Electric panel 13.3 Electric panel troubleshooting table troubleshooting table troubleshooting table troubleshooting table
All maintenance and repair operations must be performed by qualified
personnel.
Before servicing the set, disconnect the power supply and make sure there is no
pressure in the hydraulic components.
Problem Problem Problem Problem Cause Cause Cause Cause Solution Solution Solution Solution
1. No mains power supply Power the unit
2. Blown fuse inside panel Replace fuse
The panels do not
switch on
3. Overload protection
triggered (only for jockey
pump panels)
Rearm the protection
1. No mains power supply Power the unit
2. Key-operated selector switch
set to “0”
Set key-operated selector switch
to “AUTO” or “MAN”
3. Blown fuse Replace the fuse
The main electric
pump does not
start
4. Incorrect pressure switch
calibration
Recalibrate the pressure switch
1. No mains power supply Power the unit
2. Blown fuse Replace the fuse
3. Overload protection
triggered
Rearm the protection
4. Faulty pressure switch Replace the pressure switch
5. Pressure switch not
connected
Connect the pressure switch
6. Incorrect pressure switch
calibration
Recalibrate the pressure switch
7. Tank liquid level is too low
Fill the primary water supply tank
or adjust the sensitivity of the
sensors
8. Electric sensors not
connected
Connect the electric sensors
The electric jockey
pump does not
start
9. No jumper between
terminals 3-4
Insert the jumper
1. Faulty pressure switch Replace the pressure switch
2. Incorrect pressure switch
calibration
Recalibrate the pressure switch
The jockey pump
does not stop
3. Faulty electronic control
board
Replace the electronic board or
calibrate the timers
1. Pump running pressure
switch faulty
Replace the pressure switch
Pump – motor coupling
damaged
Replace the coupling and realign
the pump – motor
Self-test failed
2. Faulty electric motor Replace the motor