Foster FCI85, F85 F20 and F40 Technical Data and Operating Instructions, Start Up, Adjustments

2.F20 and F40 Technical Data and Operating Instructions

2.1 Technical Data

Model	F20	F40
Output – kg/24hr	19.5	34.5
Bin storage capacity – kg	6.5	15
Cubes per cycle	16	24
Cubes kg per cycle	0.28	0.42
Cycle time – minutes	20.7	17.5
Amps start/run	11Amps/2Amps	17Amps/3.3Amps
Watts consumption (30°C Ambient Temp)	320w	450w
Water consumption (Water Temp at 15°C Ambient Temp 21°C)	8.5	8.5
Refrigerant	R134A	R134A
Refrigerant charge grams	250 grms	320 grms
Evaporator Temp with Gas Pressure at 10.5 Bar ( Ambient Temp 21°C)	-7°C	-9°C
Evaporator Temp with Gas Pressure at 7.5 Bar ( Ambient Temp 21°C)	-27°C	-24°C
Evaporator Temp with Gas Pressure at 13 Bar ( Ambient Temp 32°C)	-5°C	-6°C
Evaporator Temp with Gas Pressure at 8 Bar ( Ambient Temp 32°C)	-26°C	-24°C
Heat Emission, watts	540	850
Noise Level dBA at 2 meters	55dBA	58 dBA

2.2Start Up

After having correctly installed the ice machine and completed the plumbing and electrical connections, perform the following “Start-up” procedure.

ASwitch on the power to the machine. The unit starts its first freezing cycle with the following components in operation:

COMPRESSOR WATER PUMP

FAN MOTOR. (The condenser fan is controlled by a thermostat, factory set at approximately 33°C).

BCheck through the ice discharge opening that the spray plate is correctly seated and that the water jets uniformly reach the interior of the inverted cup molds; also make sure that the plastic curtain is hanging freely and that water is not spilling through it excessively.

CThe ice making process takes place thereby, the water is sprayed into the molds which gets gradually refrigerated by the heat exchanged with the refrigerant flowing into the evaporator serpentine.

DWhen the evaporator temperature reaches a pre-set value the evaporator thermostat changes its contacts, the freezing cycle ends and the defrost/harvest cycle starts.

Freezing time will range between 17 and 22 minutes (depending on model, see table) in a 21°C ambient. Longer time for temperature above, shorter when below.

Average complete cycle range is about 17 to 25 minutes (depending on model, see table above)

ECheck, during the first defrost/harvest cycle, that the incoming water flows correctly into the sump reservoir in order to re-fill it and the surplus overflows down the overflow drain tube.

During this cycle the components energised are:

COMPRESSOR.

HOT GAS SOLENOID.

WATER INLET SOLENOID VALVE.

The FAN MOTOR and the WATER PUMP are also in operation if ambient temperature exceeds 33°C.

Note. During the defrost cycle, the water inlet solenoid valve is energised. The water flows through the valve to the back of the evaporator platen and then down to fill up the icemaker sump tank for the next freezing cycle.

FCheck the texture of the ice cubes just released. The correct size has a small depression (about 5-6mm) in their crown. If not, wait for the second defrost/harvest cycle before making any adjustments.

2.3Adjustments

GIf after the second harvest the cubes are not correct adjustment to the evaporator thermostat may be necessary.

Remove the front panel and locate the cube size thermostat, using a flat bladed screwdriver turn towards the ‘+’ to increase the cube size and towards the ‘-’ to decrease the cube size. (See fig 1)

HTo check the bin full thermostat hold a handful of ice against the bulb of the storage bin thermostat, the ice maker will switch off in about one to two minutes.

Once the machine has stopped remove the ice and dispose of it, the machine will restart automatically in three to four minutes.

Note. The bin thermostat is factory set at 1°C (35°F) CUT OUT and 4°C (39°F) CUT IN. (The set temperature can be adjusted if required by using a flat bladed screwdriver turn towards the ‘+’ to increase the bin temperature and towards the ‘-’ to decrease the bin temperature). (See fig 1)

Refit the bottom front panel then instruct the owner/user on the general operation of the machine and about the cleaning and care it requires.

I.The machine may stop working if the condenser temperature exceeds the pre-set temperature of the Over Temperature Thermostat (non-adjustable) due to a very high ambient temperature, condenser fan failure, dirty/ blocked condenser. To restart the machine depresses the protruding button on the Alarm Reset.

Fig. 1

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