ES-220 RACK CONVEYOR DISHWASHER – JUNE 2011
9
T
ROUBLE SHOOTING
4
PROBLEM
POSSIBLE CAUSE AND REMEDY
When machine is
(a) Check that main isolating switch is
turned on, white pilot
turned on and fuses are okay.
light does not
illuminate
(b) Pilot light may be burnt out. If so,
replace it (this will not stop machine
from operating though).
(c) Check control circuit fuse in control
box. If blown, check for cause and
then replace fuse.
Machine will not start
(a) Check if main motor
contactor has been tripped out. Reset
if necessary and check draw current of
motor.
(b) Check water level in wash tank.
(c) Check pressure switch, and check
that tube from pressure switch to air
chamber is not leaking.
Machine not filling
(a) Check if pressure switch of the
correctly and/or filling
relevant wash tank is functioning.
continuously
Replace or adjust if necessary. Also
check air tube to the pressure switch
for
air leaks.
(b) Check if water isolating valve is
fully open, and check for obstructions
in the water supply line.
(c) Check if overflow pipes are seated
correctly in wash tanks, and check for
foreign matter under the O-rings of the
pipes.
