Icematic N140, Service Manual

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8
SYMPTOM POSSIBLE CAUSE CORRECTION
TROUBLE - SHOOTING
Unit will not run
Machine runs but
makes no ice
Low ice production
Fan doesn’t run even if
the delivery pressure
is over 10 atms
Compressor cycles
intermittently
a) Electricity supply disconnected.
b) Loose electrical connection.
c) Damaged storage bin thermostat.
a) Loss or undercharge of refrigerant circuit
b) Water continuously entering into
evaporator chamber.
c) Moisture in the regrigerant system.
a) Under-charge of gas.
b) Dirty condenser.
c) Damaged fan.
d) Exceedingly warm ambient with low
ventilation.
e) Partial restriction in drier.
f) High water level in the reservoir and water
overflows.
g) Scale deposit on evaporator.
h) Partial restriction in the capillary tube.
Detective pressure switch.
a) Low voltage.
b) Dirty condenser.
Check the electricity supply; replace fuse if
necessary and ckeck for cause.
Check wiring.
Replace thermostat.
Check for leaks, repair, evacuate all the gas
and recharge with R134A by weight (see
nameplate).
Check float ball, float ball microswich and
water inlet valve. Replace, if necessary, the
defective components.
Remove refrigerant charge, raplace drier,
evacuate first, and then recharge.
Check for leak, repair, evacuate all the gas
and recharge.
Clean condenser with a non-metal brush or
with a vacuum cleaner.
Repair and replace fan.
Move unit to proper location.
Replace drier, evacuate and recharge.
Adjust level of float ball microswitch assy.
Polish evaporator.
Remove refrigerant charge, evacuate first
and the recharge.
Remplace.
Check electrity supply.
Clean.