Wilo -FireSet UL FM Notice De Montage Et De Mise En Service page 61

English
Faults
Motor fails to reach nominal speed
or oscillates
The starter pinion does not remove
after starting the motor
Motor does not start or tries to
start, then stops
Black smoke
Unusual heating – too high water/
oil temperature
Jockey pump does not start
20
Causes
Accelerator lever in wrong position
Dirty fuel strainer
Faulty injector/pump
Speed counter failure
Failure of switchgear on switchgear
Unloaded batteries
Lack of fuel
Air in fuel circuit
Dirty fuel strainer
Dirty air strainer
Fuel circuit failure: injectors blocked,
injection pump failure
Too low temperature
Loosened or rusty connections
between battery/starter/relay
Diesel pump switchgear failure
Starter failure
Dirty/blocked air strainer
Too high oil level
Problem with injector, fuel pump, etc.
Pump overload (frictions)
Coupling out of axis
Ambient temperature higher than 40°C
Insufficient ventilation
Dirty or blocked radiator/coolant
Lack of water in radiator/heat
exchanger
Closed or not sufficiently open heat
exchanger circuit valve
Water circulation pump failure
Fan belt failure (air-cooled motors)
Corresponding alarm failure
No power supply
The pressure switch is calibrated to a
lower pressure than the main pump.
Short-circuit in winding
Intervention of the thermal protection
Switchgear failure and wrong connec -
tions.
Remedies
Check and adjust rpm and secure lever.
Clean or replace it.
Call customer service centre.
Check the distance from the pinion wheel.
Replace.
Call customer service centre.
Check battery and battery charger.
Charge battery and replace it if necessary.
If it is not indicated on the switchgear's indi -
cating light, check the fuel tank and alarm float.
Replace the switchgear.
Replace the tank
Remove air from the circuit by draining the
injectors and diesel fuel strainers.
Replace it.
Replace it.
Call customer service centre.
Check that ambient temperature is not less
than 10°C. Then check the correct working of
oil/water heater.
Replace it if necessary.
Check cables and terminals.
Rewire. Tighten correctly.
Replace.
Check and replace if necessary.
Call customer service centre.
Replace.
Remove excess oil.
Call customer service centre.
Dismantle and check.
Align correctly.
Ventilate the space.
Check filters and ventilation grille. Clean or
resize.
Dismantle and clean.
After the cooling, fill with water and check if
leaks are present.
Check that pump has a water flow, then open
the shutting gate.
Call customer service centre.
Check voltage and replace the fan belt if nec -
essary.
Check sensor, connections, and control unit on
switchgear. Replace if necessary.
Check connections and the electronic switch -
gear.
Check the pressure switch settings.
Check winding.
Check the sizing of the supply line. Check that
the pump is not locked, then check pressure
switch setting and the tank inflation.
Check.
WILO SE 08/2019