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. Float Switch Selector (S5 dip switch 1)
- 10. Refill Counter (S5 dip switch 2 and 3)
- IV. Refrigeration Circuit and Component Service Information
- V. Maintenance
- VI. Preparing the Icemaker for Periods of Non-Use
- VII. Disposal
- VIII. Technical Information
- A. Specification and Performance Data
- 1. KM-1301SAJ
- 2. KM-1301SAJ3
- 3. KM-1301SWJ
- 4. KM-1301SWJ3
- 5. KM-1301SRJ with URC-14F
- 6. KM-1301SRJ3 with URC-14F
- 7. KM-1601SAJ
- 8. KM-1601SAJ3
- 9. KM-1601SWJ
- 10. KM-1601SWJ3
- 11. KM-1601SRJ with URC-22F
- 12. KM-1601SRJ3 with URC-22F
- 13. KM-1900SAJ
- 14. KM-1900SAJ3
- 15. KM-1900SWJ
- 16. KM-1900SWJ3
- 17. KM-1900SRJ with URC-22F
- 18. KM-1900SRJ3 with URC-22F
- 19. KM-2200SWJ3
- 20. KM-2200SRJ3 with URC-22F
- 21. KM-2600SWJ3
- 22. KM-2600SRJ3 with URC-26F
- B. Wiring Diagrams
- A. Specification and Performance Data
18
3. Freeze-Time Correction Chart
Legend:
Comp–compressor
FM–fan motor
FMR–fan motor-remote
HGV–hot gas valve
PM–pump motor
WV–inlet water valve
2A7664-02 Freeze-Time Correction Flow Chart
1. 10-Minute Harvest Cycle with WV
• Do not adjust S4 dip switch 7 out of the factory position.
• After step 2 completes 4th sequence (80 min. completed),
repeat step 1 for 5th and nal time.
Cycle Steps
Steps 1 and 2 repeat
4 times (total 80 min.),
then step 1 repeats for
a 5th time to complete
Freeze-Time Correction
Cycle.
2. 10-Minute Fill/Overow
Comp energized
FMR energized
HGV energized
PM energized
WV energized
WV energized
Comp de-energized
FMR de-energized
HGV de-energized
PM de-energized
Start
After 5th 10-Minute Harvest Pump Cycle with WV
Freeze-Time Correction Cycle Complete.
Go to Step "3. Freeze Cycle" in Operation Flow Chart.
Freeze Time Differential Exceeded.
Minimum and Maximum Freeze times
have exceeded differential parameters.
Freeze-Time Correction function is
enabled when S4 Dip Switch 7 is in the
"ON" position. CB monitors freeze time.
After 3freeze cycles, CB compares the
minimum and maximum differential of
the 3 freeze cycle times. Every freeze
cycle time after the third freeze cycle
time is added to the minimum/maximum
calculation.
Example: After 8 cycles, if the differential
between the shortest cycle (minimum)
and the longest cycle (maximum) is equal
to or greater than 427 sec. a freeze-time
correction cycle is initiated:
Number of
Freeze Cycles
Differential
Value in Sec.
3 254
4 309
5 349
6 380
7 406
8 427
9 446
10 462
Note: When 1st freeze-time correction
cycle is initiated, CB "POWER OK"
LED starts blinking. On 2nd freeze-time
correction cycle, if CB "POWER OK"
LED has been reset, CB "POWER OK"
LED starts blinking. If CB "POWER OK"
had not been reset after 1st freeze-time
correction cycle CB "POWER OK" LED
continues to blink.
After 3rd freeze-time correction cycle in
36hours, CB yellow "EXT HARVEST"
LED starts blinking.
Appliance continues to operate and LEDs
continue to blink until ALARM RESET
button is pressed with power on.
Appliance Cycle Reset and Alarm Reset:
Cycle Reset: Power Supply or Control Switch Turned Off and On
again: Appliance turns off, then re-starts at 1.Fill Cycle.
Alarm Reset: CB "ALARM RESET" pressed during or after a
freeze-time correction cycle with power supply on:
Appliance continues cycle with no interruption or reset.
CB red "POWER OK" LED blinking:
CB red "POWER OK" LED resets to solid.
CB yellow "EXT HARVEST" LED blinking:
CB yellow "EXT HARVEST: LED turns off.