Figure 10. Master And Relay Circuit Board - Cornelius FCB 3 H.P. POST-MIX DISPENSER Installation & Service Manual

Note: Switch No. 3 must be in "OFF" position for standard Units with pulse expansion valves.
Switch No. 3 must be in "ON" position for Units with mechanical expansion valves.
2. Press ''CANCEL DEFROST'' (ADVANCE) switch to bring up ''DIAGNOSE'' menu on message display.
Press ''DEFROST'' (SELECT) switch to lock in place. The word ''MOTOR 1'' will appear on message
display.
3. Press ''DEFROST'' (SELECT) switch. No. 1 beater motor will start and operate while switch is pressed.
4. Press ''CANCEL DEFROST'' (ADVANCE) switch to advance and bring up the word ''MOTOR 2'' on
message display.
5. Press ''DEFROST'' (SELECT) switch. No. 2 beater motor will start and operate while switch is pressed.
6. Press ''CANCEL DEFROST'' (ADVANCE) switch to advance and bring up ''DEFROST 1'' on message
display.
7. Press ''DEFROST'' (SELECT) switch. No. 1 defrost relay will click when switch is pressed.
8. Press ''CANCEL DEFROST'' (ADVANCE) switch to advance and bring up ''DEFROST 2'' on message
display.
9. Press ''DEFROST'' (SELECT) switch. No. 2 defrost relay will click when switch is pressed.
NO. 1 AND NO. 2 EVAPORATOR COILS
REFRIGERATION COMMON OUTLET TEMPERATURES
NO. 2 EVAPORATOR REFRIGERATION
COIL INLET TEMPERATURE
NO. 1 EVAPORATOR REFRIGERATION
MASTER CIRCUIT
BOARD
}
1
2
3
4
5
}
DIP SWITCH
6
ASS'Y 7
8
9
10

FIGURE 10. MASTER AND RELAY CIRCUIT BOARD

45
COIL INLET TEMPERATURE
RELAY CIRCUIT
BOARD NO. 1
RELAY CIRCUIT
BOARD NO. 2
POINT OF SALE MESSAGE DISPLAY SELECT
(SEE TABLE 6)
SEE NOTE
BEATER MOTORS CURRENT READOUT (SEE TABLE 4)
MOTOR CURRENT SELF CALIBRATION (SEE TABLE 4)
NOT USED
APPLICABLE ELECTRIC OR GAS DEFROST (SEE TABLE 4)
SERVICE USE ONLY
MOTOR CURRENT
ADJUSTMENT
312026000