Service Manual
Table Of Contents
- Important Safety Information
- I. Construction and Water/Refrigeration Circuit Diagram
- II. Sequence of Operation and Service Diagnosis
- III. Controls and Adjustments
- A. Control Board Layout
- B. LED Lights and Audible Alarm Safeties
- C. Settings and Adjustments
- 1. Default Dip Switch Settings
- 2. Harvest Time (S4 dip switch 1 & 2)
- 3. Pump-Out Time/Harvest Time During Pump-Out (S4 dip switch 3 & 4)
- 4. Pump-Out Frequency Control (S4 dip switch 5)
- 5. Harvest Pump Time (Harvest Assist) (S4 dip switch 6)
- 6. Harvest Pump Time (Harvest Assist)/Freeze-Time Correction (S4 dip switch 7)
- 7. Factory Use (S4 dip switch 8)
- 8. Freeze Timer (S4 dip switch 9 & 10)
- 9. Pump-Out Pump Motor Direction (S5 dip switch 1)
- 10. Refill Counter (S5 dip switch 2 and 3)
- 11. Minimum Harvest Time (S5 dip switch 4)
- 12. Anti-Slush (S5 dip switch 5)
- IV. Refrigeration Circuit and Component Service Information
- V. Maintenance
- VI. Preparing the Appliance for Periods of Non-Use
- VII. Disposal
- VIII. Technical Information
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A. Control Board Layout
1. "K" Control Board
"K" Control Board
"K" Control Board
Part Number 2A8242-01
• K4 (red) Connector
Bin Control
• K1 Connector
Pins #1 through #10
#1 Hot Gas Valve (#2) and
Fan Motor/Liquid Line
Valve (#3) Power Supply
#2 Hot Gas Valve
#3 Fan Motor
Liquid Line Valve
#4 Pump Motor
#5 Drain Valve
#6 Inlet Water Valve
#7, 8 Open
#9 Compressor Relay,
Pin #1 Power Supply
(Hot Gas Valve (#2) and
Fan Motor/Liquid Line
Valve (#3))
#10 Component Power Supply
• Bin Control Switch
Open LED (yellow)
• LED 2 (X2 Relay)
LED 2 on:
K1 Connector Pin #3
• LED 3 (X3 Relay)
LED 3 on:
K1 Connector Pin #4
• LED 4 (X4 Relay)
K1 Connector Pin #6
• LED 1 (X1 Relay)
K1 Connector Pin #9
• K2 Connector
Control Transformer
(10.5VAC)
• S5 Dip Switch
• "ALARM RESET"
Button
• S4 Dip Switch
• "OUTPUT TEST" Button
(used to test relays on control board)
• K3 (white) Connector
Thermistor
(harvest control and
high temperature safety)
• K5 (black) Connector
Float Switch
• Part Number
• Alarm Buzzer
• Relay LEDs
(4) (indicate which
relays are energized
and which K1
connector pins are
energized
• POWER OK LED
(red) (lights when
10.5VAC is supplied
to K2 connector)
• Ext. Harvest
LED (yellow)
(blinks when
3rd occurrence
of freeze time
correction initiates
within 36 hr.)
• K9 (white)
(Cleaning and
Sanitizing Circuit)
• LED 5 (X5 Relay)
LED 5 on:
K1 Connector Pin #5