Table Of Contents - Hoshizaki KM-280MAH Service Manual

• Please review this manual. It should be read carefully before the icemaker is serviced
or maintenance operations performed. Only qualified service technicians should service
and maintain the icemaker. This manual should be made available to the technician
prior to service or maintenance.
I. SPECIFICATIONS ...................................................................................................... 5
1. KM-280MAH (Air-cooled) ..................................................................................... 5
2a. KM-280MWH (Water-cooled) Serial #L00001E - M10134C ............................... 6
2b. KM-280MWH (Water-cooled) Serial #M20315D ................................................ 7
II. GENERAL INFORMATION ........................................................................................ 8
1. CONSTRUCTION................................................................................................. 8
[a] KM-280MAH (Air-cooled) ............................................................................... 8
[b] KM-280MWH (Water-cooled) ......................................................................... 9
2. CONTROLLER BOARD ..................................................................................... 10
[a] SOLID-STATE CONTROL ........................................................................... 10
[b] CONTROLLER BOARD ............................................................................... 10
[c] SEQUENCE ................................................................................................ 14
[d] CONTROLS AND ADJUSTMENTS ............................................................. 17
[e] CHECKING CONTROLLER BOARD ........................................................... 21
3. MECHANICAL BIN CONTROL ........................................................................... 22
[a] PROXIMITY SWITCH ................................................................................... 22
[b] EXPLANATION OF OPERATION................................................................ 22
[c] TROUBLESHOOTING ................................................................................. 23
III. TECHNICAL INFORMATION .................................................................................. 24
1. WATER CIRCUIT AND REFRIGERANT CIRCUIT .............................................. 24
[a] KM-280MAH ................................................................................................ 24
[b] KM-280MWH ............................................................................................... 25
2. WIRING DIAGRAMS .......................................................................................... 26
[a] KM-280MAH and KM-280MWH ................................................................... 26
3. TIMING CHART .................................................................................................. 28
4. PERFORMANCE DATA .................................................................................... 30
[a] KM-280MAH ................................................................................................ 30
[b] KM-280MWH Serial #L00001E - M10134C ................................................. 31
[c] KM-280MWH Serial #M20315D .................................................................. 32
CONTENTS
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