Table Of Contents - Hoshizaki KMS-1122MLH Service Manual

This manual should be read carefully before the appliance is serviced. Read
the warnings and guidelines contained in this manual carefully as they provide
essential information for the continued safe use, service, and maintenance of the
appliance. Retain this manual for any further reference that may be necessary.
Important Safety Information ................................................................................................. 5
I. Construction and Water/Refrigeration Circuit Diagrams ..................................................... 7
A. Construction ................................................................................................................. 7
1. Icemaker ................................................................................................................. 7
2. Condensing Unit ..................................................................................................... 8
B. Water/Refrigeration Circuit Diagram .............................................................................. 9
II. Sequence of Operation and Service Diagnosis ............................................................... 10
A. Sequence of Operation Flow Chart ............................................................................. 10
B. Service Diagnosis ........................................................................................................11
C. Control Board Check ................................................................................................... 16
D. Bin Control Check ....................................................................................................... 17
E. Float Switch Check and Cleaning ............................................................................... 17
F. Thermistor Check ......................................................................................................... 20
G. Diagnostic Tables ........................................................................................................ 21
III. Controls and Adjustments ............................................................................................... 25
A. Control Board Layout .................................................................................................. 26
B. LED Lights and Audible Alarm Safeties ....................................................................... 27
C. Settings and Adjustments ............................................................................................ 28
1. Default Dip Switch Settings .................................................................................... 28
2. Harvest Timer (S4 dip switch 1 & 2) ...................................................................... 29
3. Pump-Out Timer (S4 dip switch 3 & 4) .................................................................. 29
4. Pump-Out Frequency Control (S4 dip switch 5 & 6) .............................................. 30
5. Harvest Pump Timer (S4 dip switch 7) .................................................................. 30
6. Factory Use (S4 dip switch 8) ................................................................................ 30
7. Freeze Timer (S4 dip switch 9 & 10) ....................................................................... 31
8. Float Switch Selector (S5 dip switch 1) ................................................................. 31
9. Refill Counter (S5 dip switch 2 through 5) ............................................................. 32
D. Control Switch and Service Switch .............................................................................. 33
IV. Refrigeration Circuit and Component Service Information.............................................. 34
A. Refrigeration Circuit Service Information .................................................................... 34
B. Component Service Information .................................................................................. 37
V. Maintenance .................................................................................................................... 38
VI. Preparing the Appliance for Periods of Non-Use ............................................................ 39
VII. Disposal ......................................................................................................................... 40
IMPORTANT
CONTENTS
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