ES-220 RACK CONVEYOR DISHWASHER – JUNE 2011
10
PROBLEM
POSSIBLE CAUSE AND REMEDY
As above
(d) Check for obstruction in the
water supply solenoid valve and
clean if necessary. Check
diaphragm and replace if
punctured.
Racks not advancing
(a) Check for obstruction within
properly through machine
machine that could cause
conveyor to stop.
(b) Check clutch adjustment on
motor reduction unit. If necessary,
tighten slightly, but do not over-
tighten.
(c) Check that the overload relay of
the conveyor motor has not tripped
out. If it needs to be reset check
draw current of motor.
(d) Check bench switch is working
correctly-if fitted to your machine-.
Insufficient wash
(a) Check that detergent feeder to
machine is operating correctly.
(b) Check for foreign matter in pre-
wash and wash arm jets. Clean if
necessary.
(c) Check that items to be washed
are correctly placed in racks.
(d) Check temperature of tanks. If
incorrect check thermostat settings,
heating elements and contactors.
(e) Check that all pumps are
functioning. If not, check overload
relays. Reset if necessary and check
current.
(f) Check pump rotation direction
(using the arrows). If incorrect,
