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Foster F20 User Manual

Download Service manual of Foster F20 Ice Maker for Free or View it Online on All-Guides.com. This version of Foster F20 Manual compatible with such list of devices, as: F20, F40, F85, FCI20, FCI40

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F20 & F40 A/W Wiring Diagram

7

the service and inspection operations.

IN OPERATION:

The unit is running through the freezing and defrost cycle stopping automatically only at full bin situation.

RE-SET/HI TEMPERATURE: To be selected to resume the unit operation when the ice maker shuts off due to the intervention of the condenser

temperature sensor (too high condensing temperature).

The five LEDS, placed in a row in the front of the P.C. BOARD, monitor the following situations:

GREEN LIGHT: Unit under electrical power

YELLOW LIGHT: Unit shut-off at full storage bin

RED LIGHT: Unit shut-off due to hi-condensing

temperature

Blinking: Unit shut-off due to hi-evaporating

temperature

YELLOW LIGHT:

Unit in freezing operation

YELLOW LIGHT: Unit in cleaning/rinsing mode

12.6 DIP SWITCH

The P.C. BOARD which controls the entire operation of the ice maker, has a DIP SWITCH with ten switching keys which allow to set up the

micro processor program in order to extend or to shorten the length of freezing and defrost cycles in relation to the different models and versions

of ice machines.

The DIP SWITCH first four keys setting determines the length of the 2nd phase of freezing cycle (controlled by the electronic timer) as detailed

in Table B.

The DIP SWITCH keys 5, 6 and 7 setting determines the length of the defrost cycle according to the ambient temperature sensor as specified

in table C.

The 8th DIP SWITCH key allows to make a rapid check up of the P.C. BOARD output connections (compressor, water pump, fan motor, water

inlet and hot gas solenoid valves) energizing them in rapid sequence (2 seconds) one by one.

DURING THE AUTOMATIC OPERATION OF THE ICE MAKER THIS KEY MUST BE SET IN OFF POSITION.

ATTENTION: The check up of the P.C. BOARD output must be performed in a very short time in order to avoid frequent starts and stops (every

few seconds) of the electrical components which may damage them, especially the compressor.

The 9th key

allows the operation of the water pump even during the defrost cycle. On B 90 it must be set all the time to OFF position.

The 10th key is used to supply power to the water pump during the first 15-20 seconds of the defrost cycle to drain out all remaining water from

the sump tank in the unit equipped with the solenoid drain valve i.e. the KWD drain system.

13. Dip Switch Settings FCI 40-60-85

Dip switch 1 2 3 4 5 6 7 8 9 10

FCI 40 ON ON OFF ON ON ON OFF OFF ON OFF

FCI 40 W ON ON OFF ON ON ON OFF OFF ON OFF

FCI 60 ON ON OFF ON ON ON OFF OFF ON OFF

FCI 60 W ON ON OFF ON ON ON OFF OFF ON OFF

FCI 85 OFF OFF ON ON ON ON OFF OFF ON OFF

FCI 85 W OFF OFF ON ON ON ON OFF OFF ON OFF

Table B

Table C

Table A

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LENGTH OF TIMED PORTION OF FREEZING CYCLE ACCORDING TO DIP SWITH COMBINATIONS

1 2 3 4 1 2 3 4

1 ON ON OFF OFF 25 min 8 OFF ON OFF ON 11 min

2 OFF OFF ON OFF 23 min 9 ON ON OFF ON 9 min

3 ON OFF ON OFF 21 min 10 OFF OFF ON ON 7min

4 OFF ON ON OFF 19 min 11 ON OFF ON ON 5 min

5 ON ON ON OFF 17 min 12 OFF ON ON ON 3 min

6 OFF OFF OFF ON 15 min 13 ON ON ON ON 1 min

7 ON OFF OFF ON 13 min

LENGTH OF DEFROST CYCLE (IN SEC.) ACCORDING TO THE AMBIENT TEMPERATURE AND TO

DIP SWITCH SETTING COMBINATIONS

5 6 7 0-5°C 5-10°C 10-15°C 15-20°C 20-25°C 25-30°C 30-35°C 35-40°C

ON ON OFF 180 sec 150 sec 120 sec 90 sec 90 sec 90 sec 90 sec 90 sec

OFF OFF ON 210 sec 180 sec 150 sec 120 sec 120 sec 120 sec 90 sec 90sec

ON OFF ON 240 sec 210 sec 180 sec 150 sec 150 sec 120 sec 120 sec 90 sec

OFF ON ON 240 sec 210 sec 180 sec 150 sec 150 sec 120 sec 120 sec 120 sec

ON ON ON 270 sec 240 sec 210 sec 180 sec 180 sec 150 sec 150 sec 150 sec