SC200 Installation& Operation Manual
3-16
16
Problems and Solutions
PROBLEM
POSSIBLE CAUSE
SOLUTION
Water plate will not close
after defrost.
Actuator motor output shaft is turning but
front cam is not turning.
Connection between actuator motor
shaft and right side operator broken.
Check set screw, tighten or replace.
Actuator motor will not run. No voltage
measured at actuator motor.
Inspect operation of plate up and plate
down switches. Adjust or replace if
defective.
Defrost cycle ends before
all ice is out of the
evaporator
Evaporator grids are distorted, slowing
the fall of the ice from the evaporator.
Carefully straighten grids or replace
evaporator if the damage is severe.
Excessive scale build-up in evaporator
cells
Clean and de-scale ice machine
Ice remains attached to
the water plate surface at
the end of defrost.
Ice frozen into the water plate surface.
Thick web between ice cubes.
Adjust web thickness to specifications.
Over-freezing
Increase the temperature set point that
initiates harvest.
Cold potable water supply.
Make sure water supply temperature is
within the acceptable range.
Water valve will not close.
Potable water level
continues to rise after the
float is fully up.
No voltage measured at water valve coil.
Water valve remains open because of
water supply problem.
The water supply pressure must be a
minimum of 5 PSI (34 kPa) dynamic at
the water valve. Be sure that the
supply line is of adequate size. This is
especially important for liquid cooled
models where the potable water and
condenser coolant water are supplied
by the same water line. Check for
restrictions in the water supply line
including clogged filters. Check the
water valve strainer and clean it if
needed.
No voltage measured at water valve coil.
Water valve remains open because of
dirty or defective water valve.
Disassemble and clean water valve if
needed. Make sure the bleed holes in
the valve diaphragm are open.
Replace water valve if defective.
Line voltage measured at water valve
coil.
Test for proper water float switch
operation. Reed switch could be
defective.
Water level float switch OK, but line
voltage measured at water valve coil.
Check controller for output to water
valve. Controller could be defective
