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 Timer (S4 dip switch 1 & 2)
- 3. Pump-Out Timer/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)
- 11. Minimum Harvest Time (S5 dip switch 4)
- 12. Anti-Slush (S5 dip switch 5)
- D. Control Switch
- 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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13) Check for continuity across FS leads. With the water tank full, FS should be closed.
IfFS is closed and the icemaker will not switch from the 1-min. ll cycle to the initial
harvest cycle, replace CB. If FS is open, conrm that the water tank is full. If the water
tank is not full, check the water supply, water lters, and inlet water valve. If the water
tank is full, follow the steps in "II.F.2. Float Switch Cleaning." After cleaning FS, check it
again. Replace if necessary.
Legend: CB–control board; FS–oat switch
2. Float Switch Cleaning
Depending on local water conditions, scale may build up on FS. Scale on the switch can
cause the oat to stick. In this case, FS should be cleaned.
1) Turn off the power supply.
2) Remove the front panel, then move the control switch to the "OFF" position.
3) Drain the water tank. Remove the rubber cap covering the overow pipe in the water
tank. Remove the overow pipe by turning it counterclockwise. After the water tank has
drained, replace the overow pipe and the rubber cap in their correct positions.
Note: Be sure the overow pipe o-ring is in its correct position on the overow pipe.
4) Disconnect the vent tube and the ush tube from the top of FS, then remove FS
assembly and remove the rubber boot from the bottom of FS assembly. See Fig. 4.
5) Remove the retainer rod from the bottom of FS housing, then remove the oat. Be
careful not to bend the retainer rod excessively when removing it.
6) Wipe down FS housing, shaft, oat, and retainer rod with a mixture of 1 part Hoshizaki
"Scale Away" and 25 parts warm water. Clean the inside of the rubber boot and hose
with cleaning solution. Rinse the parts thoroughly with clean water.
7) Reassemble FS assembly and replace it and the rubber boot in their correct positions.
Reconnect the vent tube and the ush tube.
8) Move the control switch to the "ICE" position.
9) Replace the front panel in their correct
positions.
10) Turn on the power supply to start the
automatic icemaking process.
Legend: CB–control board; FS–oat switch
Float
Float Switch
Housing
Rubber Boot
and Hose
Retainer Rod
Flush
Vent
Shaft
Fig. 4