Hoshizaki F-800MWH Service Manual

Hoshizaki America, Inc.

Hoshizaki

Modular Flaker

Models
F-800MAH(-C)

“A Superior Degree

of Reliability”

www.hoshizaki.com

F-800MWH(-C)

SERVICE MANUAL

®

Number: 73173
Issued: 9-2-2009

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.

Should the reader have any questions or concerns which have not been satisfactorily
addressed, please call or write 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: [phone] Technical Service

[phone]

Fax: [phone]

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

• Model Number

• Serial Number

• Complete and detailed explanation of the problem

2

Please review this manual. It should be read carefully before the icemaker is serviced or
maintenance operations are 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.

CONTENTS

PAGE

I. SPECIFICATIONS .................................................................................................... 5

1. ICEMAKER ............................................................................................................. 5

F-800MAH .............................................................................................................. 5

F-800MWH ............................................................................................................. 6

F-800MAH-C .......................................................................................................... 7

F-800MWH-C ......................................................................................................... 8

II. GENERAL INFORMATION ...................................................................................... 9

1. CONSTRUCTION .................................................................................................. 9

F-800MAH/-C ......................................................................................................... 9

F-800MWH/-C ...................................................................................................... 10

2. CONTROL BOX LAYOUT .................................................................................... 11

F-800MAH/-C ....................................................................................................... 11

F-800MWH/-C ...................................................................................................... 12

III. TECHNICAL INFORMATION ................................................................................ 13

1. WATER CIRCUIT AND REFRIGERATION CIRCUIT .......................................... 13

F-800MAH/-C ....................................................................................................... 13

F-800MWH/-C ...................................................................................................... 14

2. WIRING DIAGRAM ............................................................................................... 15

F-800MAH/-C, F-800MWH/-C .............................................................................. 15

3. SEQUENCE OF ELECTRICAL CIRCUIT ............................................................ 16

4. TIMING CHART .................................................................................................... 26

5. PERFORMANCE DATA....................................................................................... 29

F-800MAH ............................................................................................................ 29

F-800MWH ........................................................................................................... 30

F-800MAH-C ........................................................................................................ 31

F-800MWH-C ....................................................................................................... 32

IV. ADJUSTMENT OF COMPONENTS ..................................................................... 33

1. ADJUSTMENT OF WATER REGULATING VALVE

- WATER-COOLED MODEL ONLY ..................................................................... 33

2. ADJUSTMENT OF FLAKE SIZE .......................................................................... 34

3

V. SERVICE DIAGNOSIS .......................................................................................... 35

1. NO ICE PRODUCTION ........................................................................................ 35

2. LOW ICE PRODUCTION ..................................................................................... 37

3. OTHERS .............................................................................................................. 38

VI. REMOVAL AND REPLACEMENT OF COMPONENTS....................................... 39

1. SERVICE FOR REFRIGERANT LINES............................................................... 39

[a] REFRIGERANT RECOVERY ......................................................................... 39

[b] EVACUATION AND RECHARGE .................................................................. 39

2. BRAZING.............................................................................................................. 40

3. REMOVAL AND REPLACEMENT OF COMPRESSOR ...................................... 41

4. REMOVAL AND REPLACEMENT OF DRIER ..................................................... 42

5. REMOVAL AND REPLACEMENT OF EXPANSION VALVE .............................. 43

6. REMOVAL AND REPLACEMENT OF WATER REGULATING VALVE

- WATER-COOLED MODEL ONLY ..................................................................... 44

7. REMOVAL AND REPLACEMENT OF CONDENSING PRESSURE

REGULATOR (C.P.R.) - REMOTE AIR-COOLED MODEL ONLY ....................... 45

8. REMOVAL AND REPLACEMENT OF EVAPORATOR ASSEMBLY .................. 46

9. REMOVAL AND REPLACEMENT OF FAN MOTOR ........................................... 50

10. REMOVAL AND REPLACEMENT OF CONTROL WATER VALVE ................... 50

11. REMOVAL AND REPLACEMENT OF FLUSH WATER VALVE ......................... 51

VII. MAINTENANCE AND CLEANING INSTRUCTIONS .......................................... 52

1. PREPARING THE ICEMAKER FOR LONG STORAGE ...................................... 52

2. CLEANING INSTRUCTIONS ............................................................................... 54

3. MAINTENANCE ................................................................................................... 58

4

I. SPECIFICATION

1. ICEMAKER

F-800MAH

AC SUPPLY VOLTAGE 115-120/60/1
COMPRESSOR 120 V 9.2 RLA 60 LRA
GEAR MOTOR 120 V 1.6 FLA 1/6 HP
FA N M OTOR 115 V 0.85F LA 1/15 HP
OTHER 120 V 0.03A
MAXIMUM FUSE SIZE 20 A
MAX. HACR BREAKER (USA ONLY) 20 A
MAX. CIRC. BREAKER (CANADA ONLY) 20 A
MINIMUM CIRCUIT AM P A CITY 20 A
APPROXIMATE ICE PRODUCTION Am bient W A TER TEM P . (°F)
PER 24 HR. Temp.(°F) 50 70 90
lbs./ day ( kg/ day ) 70 *800 (363) 765 (347) 735 (334)
Reference without *m ark s 80 710 (321) 680 (309) 655 (297)

90 630 (286) *615 (279) 585 (264)

100 560 (254) 540 (245) *505 (229)
SHAPE OF ICE Flake
ICE QUALITY Approx. 70% , Ice (90/70°F, Conduct ivity 200 µs/c m )
APPROXIMATE STORAGE CAPACITY N/A
ELE CTRIC & W A TER CO NS UM P TION 90/70°F 70/50°F
ELECTRIC W (kW H/100 lbs.) 1205 (4.7) 1175 (3.5)
PO TAB LE WATER 74 (12) 96 (12)
gal./24HR (gal./100 lbs.)
EXTERIOR DIMENS IONS (Wx Dx H) 22" x 27-3/8" x 25-1/4" (560 x 695 x 642m m )
EXTERIOR FINISH St ainless S t eel, Galvanized St eel (Rear)
W E IGHT Net 172 lbs. ( 78 kg ), S hipping 198 lbs. ( 90 kg )
CONNE CTIONS - ELE CTRIC Perm anent - Connec tion

- WATER SUPPLY Inlet 1/2" FPT

- DRAIN Outlet 3/4" FPT
ICE MAKING SYSTEM Auger type
HARVESTING SYSTEM Direct Driven Auger ( 1/6 HP Gear Motor )
ICE MA K ING WA TER CONTROL Float S wit c h
COOLING WA TER CONTROL N/A
BIN CONTROL SYSTEM Mechanical Bin Control ( Proximity Sw. )
COMPRESSOR Hermetic, Model RS55-C1E-PAA
CONDE NSE R Air-cooled, F in and tube ty pe
EVAPORATOR Copper Tube on Cylinder
REF RIGERA NT CONTROL Thermos t atic E x pans ion V alve
REF RIGERA NT CHARGE R-404A, 1 lb.10oz. (750g)
DESIGN PRESSURE High 427 PSIG, Low 230 PSIG
P. C. B O A RD CIRCUIT PROTECTION High Volt age Cut-off Relay
COMPRESSOR PROTECTION Auto-reset Overload Protector
GEAR MOTOR PROTECTION Manual reset Circuit Breaker or Fuse
REFRIGERANT CIRCUIT PROTECTION Auto-reset High Pressure Control Switch
LOW W ATER PROTECTION Float Switch and Timer
ACCESSORIES -SUPPLIED Spare Fuse

-REQUIRED Ice Storage Bin
OP E RA TING CONDITIONS VOLTAG E RA NGE 104 - 127 V

AMBIENT TEMP. 45 - 100° F
WATER SUPPLY TEMP. 45 - 90° F
WATER SUPPLY PRESSURE 10 - 113 PSIG

* W e reserve the right to m ak e c hanges in s pec ifications and des ign without prior notice.

5

F-800MWH

AC S UP P LY V O LTAGE 115-120/60/1
COM P RE S S OR 120 V 9.2 RLA 60 LRA
GEAR MOTOR 120 V 1.6 FLA 1/6 HP
OTHER 120 V 0.03A
MAXIMUM FUSE SIZE 20 A
MAX. HACR BREAKER (USA ONLY) 20 A
MAX. CIRC. BREAKER (CANADA ONLY) 20 A
MINIMUM CIRCUIT AM P A CITY 20 A
APPROXIMATE ICE PRODUCTION Ambient WATER TEMP. (°F)
PE R 24 HR. Temp.(°F) 50 70 90
lbs./ day ( kg/ day ) 70 *720 (327) 695 (314) 680 (309)
Reference without *m arks 80 670 (304) 660 (299) 650 (294)

90 640 (290) *625 (284) 620 (280)

100 605 (276) 595 (271) *555 (252)
SHAPE OF ICE Flake
ICE QUA LITY Approx . 70% , Ice (90/70°F, Conduc t ivity 200 µs/ cm )
APPROXIMATE STORAGE CAPACITY N/A
ELE CTRIC & W A TER CON SUM P TION 90/ 70°F 70/50°F
ELE CTRIC W (kWH/100 lbs .) 1100 (4.2) 1090 (3.6)
PO TAB LE WA TER 75 (12) 86 (12)
W A TER-COO LE D CO NDE NS E R 539 (86) 318 (44)
gal./24HR (gal./ 100 lbs. )
EXTERIOR DIMENS IONS (W x Dx H) 22" x 27-3/8" x 25-1/4" (560 x 695 x 642m m )
EXTERIOR FINISH Stainless Steel, Galvanized Steel (Rear)
W E IGHT Net 172 lbs . ( 78 kg ), S hipping 198 lbs . ( 90 k g )
CONNE CTIONS - ELE CTRIC Perm anent - Connec tion

- W A TER SUPPLY Inlet 1/2" FPT Cond. Inlet 1/2" FPT

- DRAIN Outlet 3/4" FPT Cond. Outlet 3/8" - 18 NPT
ICE MAKING SYSTEM Auger type
HARV E S TING S Y S TEM Direct Driven Auger ( 1/6 HP Gear Mot or )
ICE MA K ING W A TER CONTROL Float Switc h
COOLING WATER C ONTROL Autom atic Water Regulator
BIN CONTROL S Y S TEM Mec hanic al B in Control ( Prox im ity S w. )
COM P RE S S OR Hermetic , M odel RS 55-C1E-P A A
CONDE NS E R W at er-cooled, Tube in tube type
EV A P ORA TOR Copper Tube on Cylinder
REF RIGERA NT CONTROL Thermos t atic E x pans ion Va lve
REF RIGERA NT CHA RGE R-404A, 13oz . (365g)
DES IGN P RE S S URE High 427 PS IG, Low 230 P S IG
P. C. B OA RD CIRCUIT PROTECTION High V oltage Cut-off Relay
COM P RE S SO R P ROTECTION Auto-reset Overload Protec tor
GE A R M OTOR P ROTECTION M anual reset Circuit B reak er or Fuse
REF RIGERA NT CIRCUIT PROTECTION A ut o-reset High P ress ure Control Sw itc h
LOW WATER PROTECTION Float Switch and Timer
ACCESSORIES -SUPPLIED Spare Fuse

-RE QUIRED Ice S torage Bin
OP E RA TING CONDITIO NS VOLTAG E RA NGE 104 - 127 V

AM B IENT TEMP . 45 - 100° F
W A TER S UP P LY TEM P. 45 - 90° F
W A TER S UP P LY P RE S S URE 10 - 113 PSIG

* W e res erve the right to mak e c hanges in s pec ifications and des ign without prior notice.

6

F-800MAH-C

AC S UP P LY V O LTAG E 115-120/60/1
COMPRESSOR 120 V 9.2 RLA 60 LRA
GE A R M OTOR 120 V 1. 6 FLA 1/6 HP
FA N M OTOR 115 V 0. 85FLA 1/ 15 HP
OTHER 120 V 0.03A
MAXIMUM FUSE SIZE 20 A
MAX. HACR BREAKER (USA ONLY) 20 A
MAX. CIRC. BREAKER (CANADA ONLY) 20 A
MINIMUM CIRCUIT AM P A CITY 20 A
APPROXIMATE ICE PRODUCTION Ambient WATER TEMP. (°F)
PE R 24 HR. Temp.(°F) 50 70 90
lbs. /day ( k g/day ) 70 *760 (345) 730 (331) 700 (316)
Reference without *m ark s 80 665 (303) 640 (289) 610 (277)

90 585 (265) *575 (261) 535 (242)

100 510 (231) 490 (221) *455 (206)
SHAPE OF ICE Cubelet
ICE QUA LITY Approx . 80%, Ice (90/70°F, Conduc t ivity 200 µs/ c m )
APPROXIMATE STORAGE CAPACITY N/A
ELE CTRIC & WA TER CO NS UM P TION 90/70°F 70/50°F
ELE CTRIC W (k WH/ 100 lbs . ) 1240 (5.2) 1195 (3.8)
PO TAB LE WA TER 69 (12) 91 (12)
gal./24HR (gal./100 lbs.)
EXTERIOR DIME NS IONS (Wx Dx H) 22" x 27-3/8" x 25-1/4" (560 x 695 x 642m m )
EXTERIOR FINISH St ainles s S teel, G alvanized S t eel (Rear)
W E IGHT Net 172 lbs . ( 78 k g ), S hipping 198 lbs . ( 90 kg )
CONNE CTIONS - ELE CTRIC P ermanent - Connec tion

- W ATER SUPPLY Inlet 1/2" FPT

- DRAIN Outlet 3/4" FPT
ICE MAKING SYSTEM Auger type
HARVESTING SYSTEM Direct Driven Auger ( 1/6 HP Gear Motor )
ICE MA K ING WA TER CO NTROL F loat S wit c h
COOLING WA TER CO NTROL N/A
BIN CONTROL SYSTEM Mechanical Bin Control ( Proximity Sw. )
COMPRESSOR Hermetic, Model RS55-C1E-PAA
CONDE NS E R Air-cooled, F in and tube t y pe
EVAPORATOR Copper Tube on Cy li nder
REF RIGER AN T CONTROL Thermost at ic E x pans ion V alve
REF RIGERA NT CHA RGE R-404A, 1 lb. 10oz . (750g)
DES IGN P RE S S URE High 427 PS IG, Low 230 P S IG
P. C. B O A RD CIRCUIT PROTECTION High V oltage Cut -off Relay
COMPRESSOR PROTECTION Auto-reset Overload Protector
GE A R M OTOR P RO TECTION M anual reset Circ uit B reak er or Fuse
REF RIGERA NT CIRCUIT PROTECTION Auto-reset High P ress ure Control S witc h
LOW WATER P RO TECTION F loat S wit c h and Timer
ACCESSORIES -SUPPLIED Spare Fuse

-REQUIRED Ic e Storage Bin
OP E RA TING CONDITIONS VOLTAG E RA NGE 104 - 127 V

AM B IENT TEMP . 45 - 100° F
WATER SUPPLY TEMP. 45 - 90° F
WATER SUPPLY PRESSURE 10 - 113 PSIG

* W e res erve the right to m ak e c hange s in s pec ifications and des ign wit hout prior notic e.

7

F-800MWH-C

AC S UP P LY V OLTAG E 115-120/60/1
COM P RE S S OR 120 V 9.2 RLA 60 LRA
GE A R MO TOR 120 V 1.6 FLA 1/6 HP
OTHER 120 V 0. 03A
MAXIMUM FUSE SIZE 20 A
MAX. HACR BREAKER (USA ONLY) 20 A
MAX. CIRC. BREAKER (CANADA ONLY) 20 A
MINIMUM CIRCUIT A MPACITY 20 A
APPROXIMATE ICE PRODUCTION Ambient W ATER TEMP. (°F)
PE R 24 HR. Temp. (°F) 50 70 90
lbs. / day ( k g/day ) 70 *670 (304) 650 (295) 640 (290)
Reference wit hout *m arks 80 625 (284) 615 (279) 605 (274)

90 590 (268) *590 (268) 570 (258)

100 560 (253) 550 (249) *505 (229)
SHA P E OF ICE Cubelet
ICE QUA LITY A pprox. 80% , Ice (90/70°F, Conduc tivity 200 µs /c m )
APPROXIMATE STORAGE CAPACITY N/A
ELE CTRIC & W A TER CO NS UM P TION 90/ 70°F 70/ 50°F
ELE CTRIC W (kWH/100 lbs . ) 1155 (4.7) 1140 (4.1)
PO TAB LE WATER 71 (12) 81 (12)
W A TER-COO LE D CO NDE NS E R 553 (94) 318 (47)
gal./ 24HR (gal./ 100 lbs . )
EXTERIOR DIMENS IONS (Wx Dx H) 22" x 27-3/8" x 25-1/4" (560 x 695 x 642m m )
EXTERIOR FINISH St ainles s S t eel, Galvanized St eel (Rear)
W E IGHT Net 172 lbs. ( 78 k g ), Shipping 198 lbs . ( 90 k g )
CONNE CTIONS - E LE CTRIC P erm anent - Connec tion

- WA TER S UP P LY Inlet 1/2" F P T Cond. Inlet 1/ 2" F P T

- DRA IN Out let 3/ 4" FP T Cond. O utl et 3/ 8" -18 NPT
ICE MA K ING S Y S TEM Auger ty pe
HARV E S TING SY S TEM Direc t Driven Auger ( 1/6 HP Gear M otor )
ICE MA K ING WA TER CO NTROL Float S wit c h
COOLING W A TER CO NTROL A ut om atic Water Regulator
BIN CONTROL SY S TEM M ec hanic al B in Cont rol ( Prox im it y S w. )
COM P RE S S OR Hermet ic , M odel RS 55-C1E -PA A
CONDE NS E R Water-cool ed, Tube in tube t y pe
EV A P O RA TOR Copper Tube on Cylinder
REF RIGERA NT CONTROL Thermos tat ic E x pansion V alve
REF RIGERA NT CHARG E R-404A, 13oz. (365g)
DESIGN PRESSURE High 427 PSIG, Low 230 P S IG
P. C. B O A RD CIRCUIT PROTECTION High Volt age Cut -off Relay
COM P RES S O R P ROTECTION Auto-reset Overload Protec t or
GE A R M OTOR P ROTECTION M anual res et Ci rcuit B reak er or Fuse
REF RIGERA NT CIRCUIT PRO TECTION A ut o-reset High P res s ure Control S witch
LOW WATER P ROTECTION Float S wit c h and Timer
ACCESSORIES -SUPPLIED Spare Fuse

-RE Q UIRED Ice St orage B in
OP E RA TING CONDITIONS VOLTAGE RA NG E 104 - 127 V

AM B IENT TEMP . 45 - 100° F
W A TER S UPP LY TEM P . 45 - 90° F
W A TER S UPP LY P RE S S URE 10 - 113 PSIG

* W e res erve the right to m ak e changes in s pec ificat ions and des ign without prior notic e.

8

II. GENERAL INFORMATION

1. CONSTRUCTION

F-800MAH/-C

Control Water Valve

Water Supply
Inlet

Bin Control

Ice Chute

Evaporator

Expansion
Valve

Flush Water
Valve

Control Box

Gear Motor

Junction Box

Condenser

Fan Motor

Compressor

Drier

9

F-800MWH/-C

Control Water Valve

Water Supply
Inlet

Bin Control

Ice Chute

Evaporator

Expansion
Valve

Flush Water
Valve

Control Box

Gear Motor

Junction Box

Water
Regulator

Compressor

Drier

10

2. CONTROL BOX LAYOUT

)

F-800MAH/-C

CONNECTOR

PRESSURE
SWITCH

FLUSH
TIMER

GEAR
MOTOR
RELAY

CIRCUIT PROTECT
RELAY

GEAR MOTOR
PROTECT RELAY

WATER CONTROL
RELAY

FAN
MOTOR
CAP

STARTER

TRANSFORMER

FLUSH

GEAR
MOTOR
CAP.

FLUSH
SWITCH

ICE

POWER
SWITCH

START
CAPACITOR

RUN
CAPACITOR

CONTROL
TIMER

Note: The above component names are identical with the Wiring Label, but not with

the Parts List.

FUSE

FUSE
(GEAR MOTOR

11

F-800MWH/-C

CONNECTOR

PRESSURE
SWITCH

FLUSH
TIMER

GEAR
MOTOR
RELAY

CIRCUIT PROTECT
RELAY

GEAR MOTOR
PROTECT RELAY

WATER CONTROL
RELAY

STARTER

TRANSFORMER

GEAR
MOTOR
CAP.

FLUSH

ICE

FLUSH
SWITCH

POWER
SWITCH

START
CAPACITOR

RUN
CAPACITOR

CONTROL
TIMER

FUSE

FUSE
(GEAR MOTOR)

12

III. TECHNICAL INFORMATION

1. WATER CIRCUIT AND REFRIGERATION CIRCUIT

F-800MAH/-C

13

F-800MWH/-C

14

2. WIRING DIAGRAM

F-800MAH/-C, F-800MWH/-C

15

3. SEQUENCE OF ELECTRICAL CIRCUIT

[a] When Power Switch is moved to “ON” position and Flush Switch to “ICE” position,
water starts to be supplied to Reservoir.

16

[b] When Reservoir has been filled, Gear Motor starts immediately.

17

[c] Compressor starts about 60 sec. after Gear Motor starts.

18