HoshizakiHoshizaki America, Inc
KM-1301SWH/3 KM-1301SRH/3 SERVICE MANUAL
Stackable Crescent Cuber Models KM-1301SAH/3
Attn: Hoshizaki Technical Support Department
•Complete and detailed explanation of the problem
HOSHIZAKI AMERICA, INC 618 Highway 74 South
Peachtree City, GA
CONTENTS
h Float Switch Control S5 dip switch
e Harvest Pump Timer S4 dip switch
f Factory Use S4 dip switch
g Freeze Timer S4 dip switch 9 &
B. Removal and Replacement of Compressor
V. Removal and Replacement of Components
A. Service for Refrigerant Lines
1. Refrigerant Recovery
Important Safety Information
1. KM-1301SAH air-cooled
I. Specifications A. Icemaker
2. KM-1301SAH3 air-cooled
3. KM-1301SWH water-cooled
4. KM-1301SWH3 water-cooled
5. KM-1301SRHremote air-cooled
6. KM-1301SRH3remote air-cooled
Unit: inches mm
B. Condenser Unit
1. URC-14F
MODEL URC-14F
SPECIFICATIONS
1. KM-1301SAH, KM-1301SAH3 air-cooled
II. General Information A.Construction
2. KM-1301SWH, KM-1301SWH3 water-cooled
3. KM-1301SRH, KM-1301SRH3remote air-cooled
bInitial Harvest Cycle
B. Sequence of Operation
1. Sequence Cycles and Shutdown
a1-MinuteFill Cycle
fShutdown
dPump-OutCycle
eHarvest Cycle
Harvest Pump
G Control Board Sequence Flow Chart
Timer
KM-1301SAH/3, KM-1301SWH/3,and KM-1301SRH/3
C. Control Board
Part Number 2A3792-01
G Control Board
1. Control Board Layout
Control Board
aMaximum Water Supply Period - 6 minutes
bHarvest Backup Timer and Freeze Timer
cHigh Temperature Safety
dLow Water Safety
f LED Lights and Audible Alarm Safeties
bHarvest Timer S4 dip switch
3. Controls and Adjustments
aDefault Dip Switch Settings
dPump-OutFrequency Control S4 dip switch 5 &
c Pump-OutTimer S4 dip switch 3 &
g Freeze Timer S4 dip switch 9 &
e Harvest Pump Timer S4 dip switch
f Factory Use S4 dip switch
i Refill Counter S5 dip switch 2 through
h Float Switch Control S5 dip switch
F. Thermistor
E. Float Switch
G. Control Switch
D. Bin Control
Tank
III. Technical Information
A. Water Circuit and Refrigeration Circuit
Water Tank
KM-1301SWH, KM-1301SWH3 water-cooled
Water Tank
Spray Tubes
Transformer Output 10.5V at
B. Wiring Diagrams
1.Auxiliary Code T-0, U-0
a KM-1301SAH air-cooled
Transformer Output 10.5V at
Auxiliary Code T-0, U-0bKM
1301SWH water-cooled
PSIG
Auxiliary Code T-0, U-0cKM
Cut-out
412±21
cooled
water
KM-1301SAH3 air-cooledand KM
1301SWH3
10.5V at
Auxiliary Code T-0, U-0
KM-1301SRH3remote air-cooled
Transformer Output
10.5V at
Code U-1and Later
Auxiliary
Transformer Output
10.5V at
Auxiliary Code
U-1and Later
b KM-1301SWH water-cooled
Transformer Output
Auxiliary Code U-1and Later
c KM-1301SRHremote air-cooled
10.5V at
412±21 PSIG
Air-CooledModel
Water-CooledModel
Cut-out
10.5V at
1301SRH3 remote air-cooled
e KM
Transformer Output
C. Performance Data
APPROXIMATE ICE
APPROXIMATE ICE
APPROXIMATE ICE
APPROXIMATE ICE
APPROXIMATE ICE
A.Diagnostic Procedure
IV. Service Diagnosis
31-MinuteFill Cycle – LED 4 is on. WV and X2 relay auxiliary code T-0,U‑0
5Freeze Cycle – LED 1 is on. Comp and FMR remain energized, PM energizes or remains energized depending on harvest pump timer S4 dip switch 7 setting. FM and LLV energize. HGV, and X1 relay auxiliary code T‑0, U-0,X10 relay auxiliary code U‑1 and later de‑energize. The unit is held in freeze by a 5-minuteshort cycle protection timer CB will not accept a signal from F/S. After the 5-minuteshort cycle protection timer expires, CB turns freeze termination over to F/S. During the first 5 minutes of freeze, confirm that the evaporator temperature drops. After
8Shutdown
B. Control Board Check
C. Bin Control Check
D.Float Switch Check and Cleaning
1. Float Switch Check
Fig.
2.Float Switch Cleaning
E.Thermistor Check
1. No Ice Production
F. Diagnostic Charts
1 The icemaker will not
3 Compressor will
2. Evaporator is Frozen Up
1Freeze cycle time is
3. Low Ice Production
4. Abnormal Ice
5. Other
1.Refrigerant Recovery
V. Removal and Replacement of Components
A.Service for Refrigerant Lines
3.Evacuation and Recharge R-404A
2. Brazing
B.Removal and Replacement of Compressor
C.Removal and Replacement of Expansion Valve
11Place the expansion valve cover in position
E. Removal and Replacement of Evaporator
F. Removal and Replacement of Air-CooledCondenser
1Turn off the power supply 2Remove the panels
1Turn off the power supply
water‑cooled model
Regulator - C.P.R. remote air-cooledmodel
Fig.
L.Removal and Replacement of Thermistor
remote air‑cooled models
N.Removal and Replacement of Inlet Water Valve
Fig.
O. Removal and Replacement of Pump Motor
P. Removal and Replacement of Control Board
A. Cleaning and Sanitizing Instructions
VI. Cleaning and Maintenance
1.Cleaning Procedure
18Replace the front panel in its correct position
2.Storage Bin and Scoop
B. Maintenance Instructions
C. Preparing the Icemaker for Long Storage
1. Stainless Steel Exterior
3.Drain the water tank
Fig.