Nelson SC40A, Installation, Use & Maintenance Manual

Page: 17 / 25

17
E THE WATER IN THE BOILER AND/OR BOWL OVERHEATS
POSSIBLE CAUSE SPECIFIC SOLUTION
•
The contacts in the boiler and/or bowl thermostat
are locked in the “Closed” position.
•
Replace;
•
The relay has remained in the “Closed
position”,even though voltage is supplied to the coil.
•
Check the closure contacts and replace if
necessary;
F
THE WASH ELECTRIC PUMP IS FAULTY
POSSIBLE CAUSE SPECIFIC SOLUTION
•
The thermal protection is disconnected;
•
The door micro is faulty;
•
The condenser is faulty:
•
The motor winding is faulty.
•
Electronic board
•
Replace;
•
Replace;
•
Replace;
•
Replace;
•
Check connection and in case replace
the board
•
The rotor does not rotate properly and absorption
exceeds the nominal values;
•
The motor rotor is blocked;
•
There is insufficient water in the bowl;
•
The pump suction filter is dirty;
•
The pump and the washing impellers are dirty.
•
Remove and clean the coil and replace
the seal and the bearings. Check that the
motor has been set at the system
voltage. Remove any residues. Check
that all phases are present;
•
Make sure that there are no large food
deposits or cutlery in the body of the
pump. Make sure that the mechanical
seal and shaft bearings are not blocked;
•
Make sure that the overflow is perfectly
tightened. Make sure that the pressure
switch prevents water from entering the
bowl at 1 cm from the overflow level;
•
Make sure that the dishes are placed in
the dishwasher only after they have been
properly cleaned. Clean the filter
regularly according to its use;
•
Make sure that the machine is not used
without a filter or that the filter is perfectly
inserted in its housing.
G THE MACHINE DOES NOT RINSE
POSSIBLE CAUSE SPECIFIC SOLUTION
•
There is no water in the system;
•
The tap is partially closed;
•
The supply pipe may be bent or squeezed;
•
The filter of the solenoid valve may be dirty;
•
The coil of the solenoid valve may be interrupted;
•
The small piston of the solenoid valve may be
blocked;
•
Pressure in the system is insufficient.
•
Check;
•
Check;
•
Check;
•
Remove and clean;
•
Replace;
•
Remove and check;
•
Make sure that the system pressure is at
least 2 bar. If pressure is lower, install an
auxiliary rinse pump;