Hoshizaki KM-2000SWH3 User manual

ISSUED: OCT.9,1998
KM-2000SWF3
KM-2000SRF3
KM-2000SWH3
KM-2000SRH3
MODEL
SERVICEMANUAL
HOSHIZAKI
STACKABLE CRESCENT CUBER
NO: 73081
DEC.16,2003
REVISED:

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HOSHIZAKI AMERICA, INC.
618Highway74South
PeachtreeCity,GA 30269
Attn: HOSHIZAKITechnicalSupportDepartment
Phone: [phone]TechnicalService
[phone]
Fax: [phone]
NOTE: Toexpediteassistance,allcorrespondence/communicationMUST includethefollowing
information:
• ModelNumber
• SerialNumber
• Completeanddetailedexplanationoftheproblem
IMPORTANT
Only qualified service technicians should attempt to service or maintain this icemaker.
No service or maintenance should be undertaken until the technician has thoroughly
read this Service Manual.
HOSHIZAKI provides this manual primarily to assist qualified service technicians in the
service and maintenance of the icemaker.
Shouldthereaderhaveanyquestionsorconcernswhichhavenotbeensatisfactorily
addressed,please callor write tothe HOSHIZAKITechnicalSupportDepartmentfor
assistance.

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Pleasereviewthismanual. Itshouldbereadcarefullybeforetheicemakeris servicedor
maintenanceoperationsareperformed.Onlyqualifiedservicetechniciansshouldservice
andmaintaintheicemaker. Thismanualshouldbemadeavailabletothetechnicianprior
toserviceormaintenance.
CONTENTS PAGE
I. SPECIFICATIONS .................................................................................................... 5
1. KM-2000SWF3, KM-2000SWH3 (Water-cooled, 3 phase).................................. 5
2. KM-2000SRF3, KM-2000SRH3 (Remote air-cooled, 3 phase) ........................... 6
3. CONDENSING UNIT, URC-20F ......................................................................... 7
II. GENERAL INFORMATION ...................................................................................... 9
1. CONSTRUCTION ............................................................................................... 9
[a] KM-2000SWF3, KM-2000SWH3................................................................... 9
[b] KM-2000SRF3, KM-2000SRH3 .................................................................. 10
2. CONTROLLER BOARD.................................................................................... 11
[a] SOLID-STATE CONTROL .......................................................................... 11
[b] CONTROLLER BOARD.............................................................................. 11
[c] SEQUENCE ................................................................................................ 16
[d] CONTROLS AND ADJUSTMENTS ........................................................... 19
[e] CHECKING THE CONTROLLER BOARD ................................................. 22
III. TECHNICAL INFORMATION ............................................................................... 24
1. WATER CIRCUIT AND REFRIGERANT CIRCUIT.......................................... 24
[a] KM-2000SWF3, KM-2000SWH3................................................................. 24
[b] KM-2000SRF3, KM-2000SRH3 .................................................................. 25
2. WIRING DIAGRAMS......................................................................................... 26
[a] KM-2000SWF3, KM-2000SWH3................................................................. 26
[b] KM-2000SRF3, KM-2000SRH3 .................................................................. 26
3. TIMING CHART ................................................................................................ 27
4. PERFORMANCE DATA ................................................................................... 29
[a] KM-2000SWF3, KM-2000SWH3................................................................. 29
[b] KM-2000SRF3, KM-2000SRH3 .................................................................. 30
IV. SERVICE DIAGNOSIS ........................................................................................ 31
1. NO ICE PRODUCTION..................................................................................... 31
2. EVAPORATOR IS FROZEN UP....................................................................... 34
3. LOW ICE PRODUCTION.................................................................................. 35
4. ABNORMAL ICE ............................................................................................... 35
5. OTHERS ........................................................................................................... 35
V. REMOVAL AND REPLACEMENT OF COMPONENTS....................................... 36
1. SERVICE FOR REFRIGERANT LINES ........................................................... 36
[a] REFRIGERANT RECOVERY..................................................................... 36
[b] EVACUATION AND RECHARGE .............................................................. 36

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2. BRAZING .............................................................................................................37
3. REMOVAL AND REPLACEMENT OF COMPRESSOR......................................38
4. REMOVAL AND REPLACEMENT OF DRIER ....................................................39
5. REMOVAL AND REPLACEMENT OF EXPANSION VALVE..............................40
6. REMOVAL AND REPLACEMENT OF HOT GAS VALVE.......................................
AND LINE VALVE ...............................................................................................41
7. REMOVAL AND REPLACEMENT OF EVAPORATOR ......................................42
8. REMOVAL AND REPLACEMENT OF WATER-REGULATING VALVE .................
- WATER COOLED MODEL ONLY.....................................................................43
9. ADJUSTMENT OF WATER-REGULATING VALVE ...............................................
- WATER COOLED MODEL ONLY.....................................................................44
10. REMOVAL AND REPLACEMENT OF CONDENSING PRESSURE ......................
REGULATOR (C.P.R.) - REMOTE AIR-COOLED MODEL ONLY ................... 45
11. REMOVAL AND REPLACEMENT OF THERMISTOR ........................................46
12. REMOVAL AND REPLACEMENT OF FAN MOTOR...........................................47
13. REMOVAL AND REPLACEMENT OF WATER VALVE ......................................48
14. REMOVAL AND REPLACEMENT OF PUMP MOTOR........................................48
15. REMOVAL AND REPLACEMENT OF SPRAY TUBES ......................................49
VI. CLEANING AND MAINTENANCE INSTRUCTIONS .............................................50
1. PREPARING THE ICEMAKER FOR LONG STORAGE......................................50
2. CLEANING PROCEDURE ..................................................................................52
[a] CLEANING PROCEDURE ............................................................................53
[b] SANITIZING PROCEDURE...........................................................................55
3. MAINTENANCE...................................................................................................56

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I. SPECIFICATIONS
1. KM-2000SWF3, KM-2000SWH3 (Water-cooled)
We reserve the right to make changes in specifications and design without prior notice.

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2. KM-2000SRF3, KM-2000SRH3 (Remote air-cooled)
We reserve the right to make changes in specifications and design without prior notice.

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3. CONDENSING UNIT
URC-20F

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SPECIFICATIONS
MODEL: URC-20F
EXTERIOR
DIMENSIONS (W x D x H)
REFRIGERANTCHARGE
URC-20F
WEIGHT
CONNECTIONS
REFRIGERANT
ELECTRICAL
CONDENSER
HEADPRESSURECONTROL
AMBIENTCONDITION
GalvanizedSteel
46 - 3/8" x 15 - 11/16" x 25 - 15/16"
(1178 x 398 x 659 mm)
R404A 7 lbs.11 oz. (3500 g)
Net 104 lbs. (47 kg)
Shipping 150 lbs. (52 kg)
OneShotCouplings(Aeroquip)
PermanentConnection
Air-cooled
CondensingPressureRegulator
Min. -20°F - Max. +122°F
(-29°Cto+50°C)
Outdooruse

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Evaporator Spray Tube Water Valve
Expansion Valve Water Supply Inlet
Check Valve
Hot Gas Valve
Junction Box
Control Box
Water-cooled
Condenser
Line Valve
Water Regulator
Water Pump
Float Switch TransformerBox
Cleaning Valve
Drier
Compressor
Control Switch Bin Control Thermostat
II. GENERAL INFORMATION
1. CONSTRUCTION
[a] KM-2000SWF3, KM-2000SWH3

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[b] KM-2000SRF3, KM-2000SRH3
Evaporator Spray Tube Water Valve
Expansion Valve Water Supply Inlet
Check Valve
Hot Gas Valve
Junction Box
Control Box
Receiver Tank
Water Pump Line Valve
Float Switch TransformerBox
Cleaning Valve Drier
Compressor
Control Switch Bin Control Thermostat