Hoshizaki KMD-850MAH Bedienungsanleitung

Hoshizaki

“A Superior Degree

of Reliability”

www.hoshizaki.com

Models

KMD-850MAH

KMD-850MWH

KMD-850MRH

Modular Crescent Cuber

Hoshizaki America, Inc.

SERVICE MANUAL

™

Number: 73163

Issued: 9-3-2008

IMPORTANT

Only qualied service technicians should attempt to install, service, or maintain

this icemaker. No service or maintenance should be undertaken until the

technician has thoroughly read this Service Manual. Failure to service and

maintain the equipment in accordance with this manual may adversely affect

safety, performance, and warranty coverage.

Hoshizaki provides this manual primarily to assist qualied service technicians in the

service and maintenance of the icemaker.

Should the reader have any questions or concerns which have not been satisfactorily

addressed, please call, write, or send an e-mail message to the Hoshizaki Technical

Support Department for assistance.

HOSHIZAKI AMERICA, INC.

618 Highway 74 South

Peachtree City, GA 30269

Attn: Hoshizaki Technical Support Department

Phone: 1-800-233-1940 Technical Service

(770) 487-2331

Fax: 1-800-843-1056

(770) 487-3360

E-mail: [email protected]

Web Site: www.hoshizaki.com

NOTE: To expedite assistance, all correspondence/communication MUST include the

following information:

  •ModelNumber

  •SerialNumber

  •Completeanddetailedexplanationoftheproblem.

CONTENTS

I. Specications...................................................................................................................... 6

A. Icemaker ....................................................................................................................... 6

1. KMD-850MAH (air-cooled) ....................................................................................... 6

2. KMD-850MWH (water-cooled)................................................................................. 7

3. KMD-850MRH (remote air-cooled) .......................................................................... 8

B. Condenser Unit ............................................................................................................. 9

1. URC-9F.................................................................................................................... 9

II. General Information ..........................................................................................................11

A. Construction.................................................................................................................11

1. KMD-850MAH (air-cooled) ......................................................................................11

2. KMD-850MWH (water-cooled)............................................................................... 12

3. KMD-850MRH (remote air-cooled) ........................................................................ 13

B. Sequence of Operation ............................................................................................... 14

1. One Minute Fill Cycle ............................................................................................. 14

2. Initial Harvest Cycle .............................................................................................. 14

3. Freeze Cycle ......................................................................................................... 14

4. Pump-Out Cycle ................................................................................................... 14

5. Normal Harvest Cycle ........................................................................................... 15

C. Control Board .............................................................................................................. 17

1. Control Board Layout ............................................................................................. 18

2. Features................................................................................................................. 19

a) Maximum Water Supply Period – 6 minutes....................................................... 19

b) Harvest Backup Timer and Freeze Timer ........................................................... 19

c) High Temperature Safety .................................................................................... 19

d) Low Water Safety ............................................................................................... 19

e) High Voltage and Low Voltage Cut-outs ............................................................. 19

f) LED Lights and Audible Alarm Safeties ............................................................... 20

3. Controls and Adjustments...................................................................................... 21

a) Default Dip Switch Settings ................................................................................ 21

b) Harvest Timer (S4 dip switch 1 & 2) ................................................................... 21

c) Pump-Out Timer (S4 dip switch 3 & 4)................................................................ 22

d) Pump-Out Frequency Control (S4 dip switch 5 & 6) ........................................... 22

e) S4 Dip Switch 7 & 8 ........................................................................................... 23

f) Freeze Timer (S4 dip switch 9 & 10).................................................................... 23

g) Float Switch Control (S5 dip switch 1 through 5)................................................ 23

4. Control Board Check Procedure ............................................................................ 23

5. Control Board Replacement ................................................................................ 24

IMPORTANT

This manual should be read carefully before the icemaker is serviced or

maintenance operations are performed. Only qualied service technicians

should install, service, and maintain the icemaker. Read the warnings

contained in this booklet carefully as they give important information regarding

safety. Please retain this booklet for any further reference that may be

necessary.

D. Harvest Control – Thermistor ...................................................................................... 24

1. Thermistor Check Procedure.................................................................................. 24

E. Float Switch................................................................................................................. 24

1. Float Switch Check Procedure ............................................................................... 24

2. Float Switch Cleaning............................................................................................ 26

F. Bin Control ................................................................................................................... 27

1. Explanation of Operation........................................................................................ 27

2. Bin Control Check Procedure................................................................................. 27

III. Technical Information ...................................................................................................... 28

A. Water Circuit and Refrigeration Circuit ........................................................................ 28

1. KMD-850MAH (air-cooled) ..................................................................................... 28

2. KMD-850MWH (water-cooled)............................................................................... 29

3. KMD-850MRH (remote air-cooled) ........................................................................ 30

B. Wiring Diagrams.......................................................................................................... 31

1. KMD-850MAH and KMD-850MWH........................................................................ 31

2. KMD-850MRH ....................................................................................................... 32

C. Performance Data ....................................................................................................... 33

1. KMD-850MAH (air-cooled) ..................................................................................... 33

2. KMD-850MWH (water-cooled)............................................................................... 34

3. KMD-850MRH (remote air-cooled) ........................................................................ 35

IV. Service Diagnosis ........................................................................................................... 36

A. 10-Minute Diagnostic Procedure ................................................................................ 36

B. Diagnostic Charts........................................................................................................ 37

1. No Ice Production................................................................................................... 37

2. Evaporator is Frozen Up ........................................................................................ 41

3. Low Ice Production ................................................................................................ 42

4. Abnormal Ice ......................................................................................................... 42

5. Other...................................................................................................................... 43

V. Removal and Replacement of Components .................................................................... 44

A. Service for Refrigerant Lines....................................................................................... 44

1. Refrigerant Recovery ............................................................................................. 44

2. Brazing .................................................................................................................. 44

3. Evacuation and Recharge (R-404A)...................................................................... 45

B. Removal and Replacement of Compressor................................................................. 46

C. Removal and Replacement of Expansion Valve.......................................................... 47

D. Removal and Replacement of Hot Gas Valve or Liquid Line Valve ............................ 48

E. Removal and Replacement of Evaporator................................................................... 49

F. Removal and Replacement of Water Regulating Valve - Water-Cooled Model Only .... 49

G. Adjustment of Water Regulating Valve - Water-Cooled Model Only ............................ 50

H. Removal and Replacement of Headmaster (Condensing Pressure Regulator - C.P.R.)

- Remote Air-Cooled Model Only............................................................................... 51

I. Removal and Replacement of Thermistor .................................................................... 52

J. Removal and Replacement of Fan Motor..................................................................... 53

K. Removal and Replacement of Inlet Water Valve or Drain Valve .................................. 53

L. Removal and Replacement of Pump Motor................................................................. 54

M. Removal and Replacement of Bin Control.................................................................. 55

VI. Cleaning and Maintenance............................................................................................. 56

A. Cleaning and Sanitizing Instructions ........................................................................... 56

1. Cleaning Procedure................................................................................................ 57

2. Sanitizing Procedure - Following Cleaning Procedure ........................................... 58

B. Maintenance................................................................................................................ 59

C. Preparing the Icemaker for Long Storage ................................................................... 60

I. Specications

A. Icemaker

1. KMD-850MAH (air-cooled)

Note: We reserve the right to make changes in specications and design without prior

notice.

AC SUPPLY VOLTAGE 208-230/60/1 (3 wire with netrual for 115V)

AMPERAGE 9.8 A ( 5 Min. Freeze AT 104°F / WT 80°F)

MINIMUM CIRCUIT AMPACITY 20 A

MAXIMUM FUSE SIZE 20 A

APPROXIMATE ICE PRODUCTION Ambient WATER TEMP. (°F)

PER 24 HR. Temp.(°F) 50 70 90

lbs./day ( kg/day ) 70 *786 (357) 743 (337) 685 (311)

Reference without *marks 80 753 (342) 686 (311) 629 (285)

90 743 (337) *639 (290) 580 (263)

100 732 (332) 625 (284) 526 (239)

SHAPE OF ICE Crescent Cube

ICE PRODUCTION PER CYCLE 11.8 lbs. (5.4 kg) 624pcs.

APPROXIMATE STORAGE CAPACITY N/A

ELECTRIC & WATER CONSUMPTION 90/70°F 70/50°F

ELECTRIC W (kWH/100 lbs.) 1570(5.9) 1510(4.6)

WATER gal./24HR (gal./100 lbs.) 125(19.5) 291(37.0)

CEC/CEE TIER LEVEL 1

ENERGY STAR NO

EXTERIOR DIMENSIONS (WxDxH) 30" x 24-5/8" x 28" (762 x 625 x 713 mm)

EXTERIOR FINISH Stainless Steel, Galvanized Steel (Rear)

WEIGHT Net 217 lbs. (98 kg), Shipping 249 lbs. (113 kg)

CONNECTIONS - ELECTRIC Permanent - Connection

- WATER SUPPLY Inlet 1/2" FPT

- DRAIN Outlet 3/4" FPT

5/8" OD Tube

CUBE CONTROL SYSTEM Float Switch

HARVESTING CONTROL SYSTEM Hot Gas and Water, Thermistor and Timer

ICE MAKING WATER CONTROL Timer Controlled. Overflow Pipe

COOLING WATER CONTROL N/A

BIN CONTROL SYSTEM Mechanical Lever Switch and Timer

COMPRESSOR Hermetic, Model CS08KQE-PFV-255

CONDENSER Air-Cooled , Fin and tube type

EVAPORATOR Vertical type, Stainless Steel and Copper

REFRIGERANT CONTROL Thermostatic Expansion Valve

REFRIGERANT CHARGE R404A, 2 lb. 8.2 oz. (1140g)

DESIGN PRESSURE High 467PSIG, Low 230PSIG

P.C. BOARD CIRCUIT PROTECTION High Voltage Cut-out ( Internal )

COMPRESSOR PROTECTION Auto-reset Overload Protector ( Internal )

REFRIGERANT CIRCUIT PROTECTION Auto-reset High Pressure Control Switch

LOW WATER PROTECTION Float Switch

ACCESSORIES -SUPPLIED N/A

-REQUIRED Ice Dispenser or Ice Storage Bin

OPERATING CONDITIONS VOLTAGE RANGE 187 - 253 V

AMBIENT TEMP. 45 -100° F

WATER SUPPLY TEMP. 45 - 90° F

WATER SUPPLY PRESSURE 10 - 113 PSIG

AC SUPPLY VOLTAGE 208-230/60/1 (3 wire with netrual for 115V)

AMPERAGE 8.3A ( 5 Min. Freeze AT 104°F / WT 80°F)

MINIMUM CIRCUIT AMPACITY 20 A

MAXIMUM FUSE SIZE 20 A

APPROXIMATE ICE PRODUCTION Ambient WATER TEMP. (°F)

PER 24 HR. Temp.(°F) 50 70 90

lbs./day ( kg/day ) 70 *836 (379) 830 (376) 786 (357)

Reference without *marks 80 831 (377) 822 (373) 759 (344)

90 830 (376) *815 (370) 759 (344)

100 809 (367) 802 (364) 708 (321)

SHAPE OF ICE Crescent Cube

ICE PRODUCTION PER CYCLE 12.1 lbs. (5.5 kg) 624pcs.

APPROXIMATE STORAGE CAPACITY N/A

ELECTRIC & WATER CONSUMPTION 90/70°F 70/50°F

ELECTRIC W (kWH/100 lbs.) 1390(4.1) 1390(4.0)

WATER gal./24HR (gal./100 lbs.) 165(20.2) 298(35.7)

WATER COOLED CONDENSER 1035(127) 565(68)

gal./24HR (gal./100 lbs.)

CEC/CEE TIER LEVEL 2

ENERGY STAR N/A

EXTERIOR DIMENSIONS (WxDxH) 30" x 24-5/8" x 28" (762 x 625 x 713 mm)

EXTERIOR FINISH Stainless Steel, Galvanized Steel (Rear)

WEIGHT Net 217 lbs. (98 kg), Shipping 249 lbs. (113 kg)

CONNECTIONS - ELECTRIC Permanent - Connection

- WATER SUPPLY Inlet 1/2" FPT Cond. Inlet 1/2" FPT

- DRAIN Outlet 3/4" FPT Cond. Outlet 3/8" FPT

5/8" OD Tube

CUBE CONTROL SYSTEM Float Switch

HARVESTING CONTROL SYSTEM Hot Gas and Water, Thermistor and Timer

ICE MAKING WATER CONTROL Timer Controlled. Overflow Pipe

COOLING WATER CONTROL Pressure Regulator

BIN CONTROL SYSTEM Mechanical Lever Switch and Timer

COMPRESSOR Hermetic, Model CS08KQE-PFV-255

CONDENSER Water-cooled, Tube in tube type

EVAPORATOR Vertical type, Stainless Steel and Copper

REFRIGERANT CONTROL Thermostatic Expansion Valve

REFRIGERANT CHARGE R404A, 1 lb. 12.6 oz. (810g)

DESIGN PRESSURE High 427PSIG, Low 230PSIG

P.C. BOARD CIRCUIT PROTECTION High Voltage Cut-out ( Internal )

COMPRESSOR PROTECTION Auto-reset Overload Protector ( Internal )

REFRIGERANT CIRCUIT PROTECTION Auto-reset High Pressure Control Switch

LOW WATER PROTECTION Float Switch

ACCESSORIES -SUPPLIED N/A

-REQUIRED Ice Dispenser or Ice Storage Bin

OPERATING CONDITIONS VOLTAGE RANGE 187 - 253 V

AMBIENT TEMP. 45 -100° F

WATER SUPPLY TEMP. 45 - 90° F

WATER SUPPLY PRESSURE 10 - 113 PSIG

2. KMD-850MWH (water-cooled)

Note: We reserve the right to make changes in specications and design without prior

notice.

3. KMD-850MRH (remote air-cooled)

Note: We reserve the right to make changes in specications and design without prior

notice.

AC SUPPLY VOLTAGE 208-230/60/1 (3 wire with netrual for 115V)

AMPERAGE 9.8A ( 5 Min. Freeze AT 104°F / WT 80°F)

MINIMUM CIRCUIT AMPACITY 20 A

MAXIMUM FUSE SIZE 20 A

APPROXIMATE ICE PRODUCTION Ambient WATER TEMP. (°F)

PER 24 HR. Temp.(°F) 50 70 90

lbs./day ( kg/day ) 70 *833 (378) 793 (360) 738 (335)

Reference without *marks 80 803 (364) 741 (336) 686 (311)

90 793 (360) *698 (317) 641 (291)

100 782 (355) 685 (311) 589 (267)

SHAPE OF ICE Crescent Cube

ICE PRODUCTION PER CYCLE 11.6 lbs. (5.3 kg) 624pcs.

APPROXIMATE STORAGE CAPACITY N/A

ELECTRIC & WATER CONSUMPTION 90/70°F 70/50°F

ELECTRIC W (kWH/100 lbs.) 1570(5.4) 1490(4.3)

WATER gal./24HR (gal./100 lbs.) 136(19.5) 280(33.6)

CEC/CEE TIER LEVEL 2

ENERGY STAR YES

EXTERIOR DIMENSIONS (WxDxH) 30" x 24-5/8" x 28" (762 x 625 x 713 mm)

EXTERIOR FINISH Stainless Steel, Galvanized Steel (Rear)

WEIGHT Net 203 lbs. (92 kg), Shipping 235 lbs. (107 kg)

CONNECTIONS - ELECTRIC Permanent - Connection

- WATER SUPPLY Inlet 1/2" FPT

- DRAIN Outlet 3/4" FPT

5/8" OD Tube

CUBE CONTROL SYSTEM Float Switch

HARVESTING CONTROL SYSTEM Hot Gas and Water, Thermistor and Timer

ICE MAKING WATER CONTROL Timer Controlled. Overflow Pipe

COOLING WATER CONTROL N/A

BIN CONTROL SYSTEM Mechanical Lever Switch and Timer

COMPRESSOR Hermetic, Model CS08KQE-PFV-255

CONDENSER Air-Cooled Remote, Condenser Unit URC-9F

EVAPORATOR Vertical type, Stainless Steel and Copper

REFRIGERANT CONTROL Thermostatic Expansion Valve

Condensing Pressure Regulator on URC-9F

REFRIGERANT CHARGE R404A, 9 lbs. 4.2 oz. (4200g)

(Icemaker 5 lbs. 5.4 oz. Cond. Unit 3 lbs. 14.8 oz.)

DESIGN PRESSURE High 467PSIG, Low 230PSIG

P.C. BOARD CIRCUIT PROTECTION High Voltage Cut-out ( Internal )

COMPRESSOR PROTECTION Auto-reset Overload Protector ( Internal )

REFRIGERANT CIRCUIT PROTECTION Auto-reset High Pressure Control Switch

LOW WATER PROTECTION Float Switch

ACCESSORIES -SUPPLIED N/A

-REQUIRED Ice Dispenser or Ice Storage Bin, Remote Condenser Unit

OPERATING CONDITIONS VOLTAGE RANGE 187 - 253 V

AMBIENT TEMP. 45 -100° F

WATER SUPPLY TEMP. 45 - 90° F

WATER SUPPLY PRESSURE 10 - 113 PSIG

B. Condenser Unit

1. URC-9F

Unit: mm [inches]

AC SUPPLY VOLTAGE 115/60/1 (Connection to Icemaker)

FAN MOTOR 115 V Total 1.3FLA 65W

EXTERIOR DIMENSIONS (WxDxH) 32-3/16" x 15-11/16" x 21-15/16" (817 x 398 x 558 mm)

DIMENSIONS INCLUDING LEGS (WxDxH) 34-5/16" x 18-1/8" x 36-15/16" (871 x 460 x 938 mm)

EXTERIOR FINISH Galvanized Steel

WEIGHT Net 81 lbs. ( 37 kg ) Shipping 92 lbs. ( 42 kg )

CONNECTIONS - ELECTRIC Permanent - Connection

- REFRIGERANT Discharge Line 1-1/16"-12 UNF Fitting (#10 AEROQUIP)

Liquid Line 5/8"-18 UNF Fitting (#6 AEROQUIP)

CONDENSER Air-cooled, Fin and tube type

FAN MOTOR PROTECTION Thermal Protection

REFRIGERANT CONTROL Condensing Pressure Regulator

REFRIGERANT CHARGE R-404A 3 lbs. 14.8 oz. (1780g)

DESIGN PRESSURE High 467 PSIG

OPERATING CONDITIONS VOLTAGE RANGE 104 ~ 127 V

AMBIENT TEMP. -20 ~ 122 °F

ACCESSORIES -SUPPLIED Leg 2 pcs

Hex. Head Bolt w/Washer 8 x 16 8 pcs

Hex. Nut 8 8 pcs

Note: We reserve the right to make changes in specications and design without prior

notice.

Specications

MODEL: URC-9F

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