Hoshizaki KM-901MAH Ice Maker User Manual


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3. Controls and Adjustments ..................................................................................... 3
a) Default Dip Switch Settings ............................................................................. 3
b) Harvest Timer (S4 dip switch  & ) ................................................................ 3
c) Pump-Out Timer (S4 dip switch 3 & 4) ............................................................ 33
d) Pump-Out Frequency Control (S4 dip switch 5 & 6) ........................................ 33
e) Bin Control Selector/Harvest Pump Timer (S4 dip switch 7) ........................... 34
f) Factory Use (S4 dip switch 8) ........................................................................... 34
g) Freeze Timer (S4 dip switch 9 & 0) ............................................................... 35
h) Float Switch Control (S5 dip switch ): "G" Control Board .............................. 35
i) Rell Counter (S5 dip switch  through 5): "G" Control Board .......................... 35
D. Bin Control .................................................................................................................. 36
. Thermostatic Bin Control: Auxiliary Code T-0, U-0 ............................................... 36
. Mechanical Bin Control: Auxiliary Code U- and Later ......................................... 36
E. Float Switch ................................................................................................................ 36
F. Thermistor ................................................................................................................... 36
G. Control Switch ............................................................................................................ 36
III. Technical Information ..................................................................................................... 37
A. Water Circuit and Refrigeration Circuit ....................................................................... 37
. KM-90MAH (air-cooled) ...................................................................................... 37
. KM-90MWH (water-cooled) ................................................................................. 38
3. KM-90MRH/3 (remote air-cooled) ....................................................................... 39
B. Wiring Diagrams ......................................................................................................... 40
. Thermostatic Bin Control: Auxiliary Code T-0, U-0 ............................................... 40
a) KM-90MAH (air-cooled) and KM-90MWH (water-cooled) ........................... 40
b) KM-90MRH (remote air-cooled) ..................................................................... 4
c) KM-90MRH3 (remote air-cooled) ................................................................... 4
. Mechanical Bin Control: Auxiliary Code U- and Later ......................................... 43
a) KM-90MAH (air-cooled) and KM-90MWH (water-cooled) ........................... 43
b) KM-90MRH (remote air-cooled) ..................................................................... 44
c) KM-90MRH3 (remote air-cooled) ................................................................... 45
C. Performance Data ...................................................................................................... 46
. KM-90MAH (air-cooled) ...................................................................................... 46
. KM-90MWH (water-cooled) ................................................................................. 47
3. KM-90MRH (remote air-cooled) .......................................................................... 48
4. KM-90MRH3 (remote air-cooled) ........................................................................ 49
IV. Service Diagnosis .......................................................................................................... 50
A. Diagnostic Procedure ................................................................................................. 50
B. Control Board Check .................................................................................................. 53
C. Bin Control Check ....................................................................................................... 54
. Thermostatic Bin Control Check: Auxiliary Code T-0, U-0 .................................... 54
. Mechanical Bin Control Check and Cleaning: Auxiliary Code U- and Later ........ 55
a) Mechanical Bin Control Check ......................................................................... 55
b) Mechanical Bin Control Cleaning ..................................................................... 56
D. Float Switch Check and Cleaning ............................................................................... 57
. Float Switch Check ................................................................................................ 57
. Float Switch Cleaning ............................................................................................ 58
E. Thermistor Check ....................................................................................................... 59
F. Diagnostic Charts ........................................................................................................ 60
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