IceTech CD 50, Service Manual

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Granular Ice Technical Service Manual
26 COD: IQ02_404MTIN.DOC
This safety device trips when pressure is too high. Pressure might reach
the set limit of 27 Kg/cm2 when:
a) Air circulation is not sufficient, room temperature is too high, condenser
is dirty or fan motor is broken. (air-cooled models)
b) Insufficient water in the cooling circuit, inlet water temperature is too high
or fan motor is broken (water -cooled models).
The safety pressostat will switch off the machine completely until pressure
drops again to its lower set point value (21 Kg/cm2)
HIGH PRESSURE SET POINTS (non-adjustable):
27-21 Kg/cm2 (380-296 Psi.)
Start up timer
This timer delays start up for 10 minutes after machine is switched on. This delay allows ice
formed on evaporator to partially melt. When the machine restarts ice will be wet and loose in
evaporator, and hence gearbox/auger breakage risk is reduced.
THIS TIMER ONLY WORKS WHEN MACHINE IS WARM.
Safety devices
•
Overload protection device: will trip if maximum current intensity (A) is exceeded, hence preventing
the motor from overheating due to current peaks. When overload trips, a red light will switch on in the
front panel. The overload must be reset manually, to do so the front grille and overload cover must
be removed.
•
Thermal protection device: will trip if temperature in motor exceeds set point. When this device trips,
the same red light will switch on in the front panel. In this case, however, reset is automatic.
•
Low water level sensor: a magnetically activated sensor (buoy) located inside the water trough will
switch off the machine should the level of water fall below the set minimum. A red light will switch on
in the front panel label
led “low water level”. Reset is automatic.
•
Bin full of ice: a micro-switch located at the top of the evaporator will stop the machine when the bin
(and the ice discharge tube leading to the bin) is full of ice. An orange light will switch on in the front
panel labelled “bin full”. Reset is automatic.