Nelson NWC611D, Руководство пользователя

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NWC 611
16
1 MALFUNCTIONS SHOWN ON THE DISPLAY (FOR
THE TECHNICIAN)
The warewasher is able to identify a number of malfunctions and show them on the display.
If the problem persists after the warewasher has been switched off and back on, proceed as described
below:
E.1 Boiler temperature probe malfunction Boiler temperature probe disconnected or not
working
E.2 Tank temperature probe malfunction Tank temperature probe disconnected or not
working
E.3 Water intake malfunction Water intake not completed in the maximum time
allowed
Check dynamic pressure in intake system, clean
water intake filter.
If the problem persists:
‐ tank pressure switch has failed (continuous empty
reading)
‐ leak from pipe connected to air trap
‐ drain siphon blocked ‐ the tank is empty due to
siphoning when the drain pump is not running
E.4 Boiler overheating. Reduce boiler temperature to 80°
Circuit board relay failed, check circuit board and
inspect boiler heating element for damage
E.5 Tank overheating Reduce boiler temperature to 58°
Circuit board relay failed, check circuit board and
inspect tank heating element for damage
E.6
Water not pumped out of tank
Inspect the filters for dirt and check that the drain
hose is not blocked, bent or crushed.
Check that the drain pump is not blocked by dirt by
removing the insert on the sump (from inside the
tank)
If the problem persists:
‐ with tank empty: tank pressure switch has failed
(continuous full reading)
‐ with tank full: drain pump failure
E.7
Boiler heating malfunction (does not
heat up)
‐ circuit board relay failure
‐ boiler heating element faulty or "furred" with
limescale
‐ boiler temperature probe faulty or incorrectly
positioned