Nelson NW511, Руководство пользователя, Страница: 19 / 32

NW511
19
6 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
also controls:
if tank and boiler pressure switch properly
if the rubber pipes are connected correctly
if the air trap is clogged/dirty
if the rinse pump running correctly
E.4 Boiler overheating. Reduce boiler temperature < 80°.
Circuit board relay failed, check circuit board and
inspect boiler heating element for damage
E.5 Tank overheating Reduce boiler temperature < 58°.
Circuit board relay failed, check circuit board and
inspect tank heating element for damage