Icematic N 132M, Service Manual

Page: 14 / 30

GB
14
HARVEST CYCLE
1. During the harvest cycle the components in opera-
tion are:
• Hot Gas valve
• Harvest assist solenoid (pusher)
• Water Drain/Purge Valve
• Water Pump for the first 40"
• Compressor
and both
• Machine Under Power
• Machine in Operation
2. 30 seconds after the beginning of the Harvest
Cycle, the Water Inlet Solenoid Valve is energized
for 10 seconds only in order to have a short flush
of fresh water into the sump while the Water Pump
is still in operation.
3. The Fan Motor remains in OFF mode unless the
Condenser Sensor probe rise up to more then
38°C (same set up as per end of freezing cycle).
4. When the ice plate is falling down from the evapo-
rator, the magnetic switch is activated for a while
providing the signal to the PC Board to restart a
new freezing cycle.
5. Observe first ice cube harvest and check size of
ice cubes; if an adjustment is required thread down
or out screw N. 1 as shown on below illustration.
Ice Thickness Sensor Adjustment
This screw position determines the distance
between the sensor reeds and the egg-crate evap-
orator thus keeping the ice cube at a proper thick-
ness.
6. Observe second and third cube harvest.
Check if size and shape combination is correct.
In areas where extreme problem water conditions
exist, filtering or purifyng equipment is recom-
mended.
7. Check operation of magnetic switch controlling it
by keeping open the bottom end of plastic deflec-
tor for more than 30 seconds. The machine must
switch off at storage bin full.
Release the plastic deflector. The machine should
restart in the freezing cycle mode within few sec-
onds going through a 3 minutes delay time.
8. Place again all cabinet panels and screws previ-
ously removed.
9. Thoroughly explain to owner/user the significant
specifications of the ice maker start-up, reset and
operation, going through the procedures in the
operating instructions.
Answer all questions about the ice maker by the
owner and inform the owner himseft of the name
and telephone number of the authorized service
agency serving him.
NOTE:
To assure a correct operation of the
machine the water must have a minimum electri-
cal conductivity of 20 us.
NOTE:
If water used is too soft, "demineralized"
the ice thickness sensor might not be able to
sense the water on its reeds, there by it will not
switch the unit on harvest cycle. A safety system
built in the P.C. Board switches the unit on harvest
cycle whenever the freezing period gets longer
then 30 or 40 minutes.
NOTE:
This type of machine produce an "ICE
PLATE" that breaks when falls down into the stor-
age bin. Setting the ice thickness sensor in order
to have single ice cubes may cause malfunc-
tion of the machine.