Hoshizaki F-800MAH(-C) User manual

Hoshizaki
“A Superior Degree
of Reliability”
www.hoshizaki.com
Models
F-800MAH(-C)
F-800MWH(-C)
Modular Flaker
Hoshizaki America, Inc.
Number: 73173
Issued: 9-2-2009
SERVICE MANUAL
®

2
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
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.

3
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
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.

4
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

5
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
FAN MOTOR 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 AMPACITY 20 A
APPROXIMATE ICE PRODUCTION Ambient WATER TEMP. (°F)
PER 24 HR. Temp.(°F) 50 70 90
lbs./day ( kg/day ) 70 *800 (363) 765 (347) 735 (334)
Reference without *marks 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, Conductivity 200 µs/cm)
APPROXIMATE STORAGE CAPACITY N/A
ELECTRIC & WATER CONSUMPTION 90/70°F 70/50°F
ELECTRIC W (kWH/100 lbs.) 1205 (4.7) 1175 (3.5)
POTABLE WATER 74 (12) 96 (12)
gal./24HR (gal./100 lbs.)
EXTERIOR DIMENSIONS (WxDxH) 22" x 27-3/8" x 25-1/4" (560 x 695 x 642mm)
EXTERIOR FINISH Stainless Steel, Galvanized Steel (Rear)
WEIGHT Net 172 lbs. ( 78 kg ), Shipping 198 lbs. ( 90 kg )
CONNECTIONS - ELECTRIC Permanent - Connection
- 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 MAKING WATER CONTROL Float Switch
COOLING WATER CONTROL N/A
BIN CONTROL SYSTEM Mechanical Bin Control ( Proximity Sw. )
COMPRESSOR Hermetic, Model RS55-C1E-PAA
CONDENSER Air-cooled, Fin and tube type
EVAPORATOR Copper Tube on Cylinder
REFRIGERANT CONTROL Thermostatic Expansion Valve
REFRIGERANT CHARGE R-404A, 1 lb.10oz. (750g)
DESIGN PRESSURE High 427 PSIG, Low 230 PSIG
P.C. BOARD CIRCUIT PROTECTION High Voltage 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 WATER PROTECTION Float Switch and Timer
ACCESSORIES -SUPPLIED Spare Fuse
-REQUIRED Ice Storage Bin
OPERATING CONDITIONS VOLTAGE RANGE 104 - 127 V
AMBIENT TEMP. 45 - 100° F
WATER SUPPLY TEMP. 45 - 90° F
WATER SUPPLY PRESSURE 10 - 113 PSIG
* We reserve the right to make changes in specifications and design without prior notice.

6
F-800MWH
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
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 AMPACITY 20 A
APPROXIMATE ICE PRODUCTION Ambient WATER TEMP. (°F)
PER 24 HR. Temp.(°F) 50 70 90
lbs./day ( kg/day ) 70 *720 (327) 695 (314) 680 (309)
Reference without *marks 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 QUALITY Approx. 70%, Ice (90/70°F, Conductivity 200 µs/cm)
APPROXIMATE STORAGE CAPACITY N/A
ELECTRIC & WATER CONSUMPTION 90/70°F 70/50°F
ELECTRIC W (kWH/100 lbs.) 1100 (4.2) 1090 (3.6)
POTABLE WATER 75 (12) 86 (12)
WATER-COOLED CONDENSER 539 (86) 318 (44)
gal./24HR (gal./100 lbs.)
EXTERIOR DIMENSIONS (WxDxH) 22" x 27-3/8" x 25-1/4" (560 x 695 x 642mm)
EXTERIOR FINISH Stainless Steel, Galvanized Steel (Rear)
WEIGHT Net 172 lbs. ( 78 kg ), Shipping 198 lbs. ( 90 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" - 18 NPT
ICE MAKING SYSTEM Auger type
HARVESTING SYSTEM Direct Driven Auger ( 1/6 HP Gear Motor )
ICE MAKING WATER CONTROL Float Switch
COOLING WATER CONTROL Automatic Water Regulator
BIN CONTROL SYSTEM Mechanical Bin Control ( Proximity Sw. )
COMPRESSOR Hermetic, Model RS55-C1E-PAA
CONDENSER Water-cooled, Tube in tube type
EVAPORATOR Copper Tube on Cylinder
REFRIGERANT CONTROL Thermostatic Expansion Valve
REFRIGERANT CHARGE R-404A, 13oz. (365g)
DESIGN PRESSURE High 427 PSIG, Low 230 PSIG
P.C. BOARD CIRCUIT PROTECTION High Voltage 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 WATER PROTECTION Float Switch and Timer
ACCESSORIES -SUPPLIED Spare Fuse
-REQUIRED Ice Storage Bin
OPERATING CONDITIONS VOLTAGE RANGE 104 - 127 V
AMBIENT TEMP. 45 - 100° F
WATER SUPPLY TEMP. 45 - 90° F
WATER SUPPLY PRESSURE 10 - 113 PSIG
* We reserve the right to make changes in specifications and design without prior notice.

7
F-800MAH-C
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
FAN MOTOR 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 AMPACITY 20 A
APPROXIMATE ICE PRODUCTION Ambient WATER TEMP. (°F)
PER 24 HR. Temp.(°F) 50 70 90
lbs./day ( kg/day ) 70 *760 (345) 730 (331) 700 (316)
Reference without *marks 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 QUALITY Approx. 80%, Ice (90/70°F, Conductivity 200 µs/cm)
APPROXIMATE STORAGE CAPACITY N/A
ELECTRIC & WATER CONSUMPTION 90/70°F 70/50°F
ELECTRIC W (kWH/100 lbs.) 1240 (5.2) 1195 (3.8)
POTABLE WATER 69 (12) 91 (12)
gal./24HR (gal./100 lbs.)
EXTERIOR DIMENSIONS (WxDxH) 22" x 27-3/8" x 25-1/4" (560 x 695 x 642mm)
EXTERIOR FINISH Stainless Steel, Galvanized Steel (Rear)
WEIGHT Net 172 lbs. ( 78 kg ), Shipping 198 lbs. ( 90 kg )
CONNECTIONS - ELECTRIC Permanent - Connection
- 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 MAKING WATER CONTROL Float Switch
COOLING WATER CONTROL N/A
BIN CONTROL SYSTEM Mechanical Bin Control ( Proximity Sw. )
COMPRESSOR Hermetic, Model RS55-C1E-PAA
CONDENSER Air-cooled, Fin and tube type
EVAPORATOR Copper Tube on Cylinder
REFRIGERANT CONTROL Thermostatic Expansion Valve
REFRIGERANT CHARGE R-404A, 1 lb.10oz. (750g)
DESIGN PRESSURE High 427 PSIG, Low 230 PSIG
P.C. BOARD CIRCUIT PROTECTION High Voltage 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 WATER PROTECTION Float Switch and Timer
ACCESSORIES -SUPPLIED Spare Fuse
-REQUIRED Ice Storage Bin
OPERATING CONDITIONS VOLTAGE RANGE 104 - 127 V
AMBIENT TEMP. 45 - 100° F
WATER SUPPLY TEMP. 45 - 90° F
WATER SUPPLY PRESSURE 10 - 113 PSIG
* We reserve the right to make changes in specifications and design without prior notice.

8
F-800MWH-C
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
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 AMPACITY 20 A
APPROXIMATE ICE PRODUCTION Ambient WATER TEMP. (°F)
PER 24 HR. Temp.(°F) 50 70 90
lbs./day ( kg/day ) 70 *670 (304) 650 (295) 640 (290)
Reference without *marks 80 625 (284) 615 (279) 605 (274)
90 590 (268) *590 (268) 570 (258)
100 560 (253) 550 (249) *505 (229)
SHAPE OF ICE Cubelet
ICE QUALITY Approx. 80%, Ice (90/70°F, Conductivity 200 µs/cm)
APPROXIMATE STORAGE CAPACITY N/A
ELECTRIC & WATER CONSUMPTION 90/70°F 70/50°F
ELECTRIC W (kWH/100 lbs.) 1155 (4.7) 1140 (4.1)
POTABLE WATER 71 (12) 81 (12)
WATER-COOLED CONDENSER 553 (94) 318 (47)
gal./24HR (gal./100 lbs.)
EXTERIOR DIMENSIONS (WxDxH) 22" x 27-3/8" x 25-1/4" (560 x 695 x 642mm)
EXTERIOR FINISH Stainless Steel, Galvanized Steel (Rear)
WEIGHT Net 172 lbs. ( 78 kg ), Shipping 198 lbs. ( 90 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"-18 NPT
ICE MAKING SYSTEM Auger type
HARVESTING SYSTEM Direct Driven Auger ( 1/6 HP Gear Motor )
ICE MAKING WATER CONTROL Float Switch
COOLING WATER CONTROL Automatic Water Regulator
BIN CONTROL SYSTEM Mechanical Bin Control ( Proximity Sw. )
COMPRESSOR Hermetic, Model RS55-C1E-PAA
CONDENSER Water-cooled, Tube in tube type
EVAPORATOR Copper Tube on Cylinder
REFRIGERANT CONTROL Thermostatic Expansion Valve
REFRIGERANT CHARGE R-404A, 13oz. (365g)
DESIGN PRESSURE High 427 PSIG, Low 230 PSIG
P.C. BOARD CIRCUIT PROTECTION High Voltage 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 WATER PROTECTION Float Switch and Timer
ACCESSORIES -SUPPLIED Spare Fuse
-REQUIRED Ice Storage Bin
OPERATING CONDITIONS VOLTAGE RANGE 104 - 127 V
AMBIENT TEMP. 45 - 100° F
WATER SUPPLY TEMP. 45 - 90° F
WATER SUPPLY PRESSURE 10 - 113 PSIG
* We reserve the right to make changes in specifications and design without prior notice.

9
II. GENERAL INFORMATION
1. CONSTRUCTION
F-800MAH/-C
Water Supply
Inlet
Junction Box
Condenser
Fan Motor
Compressor
Drier
Control Water Valve
Bin Control
Ice Chute
Evaporator
Expansion
Valve
Flush Water
Valve
Control Box
Gear Motor

10
F-800MWH/-C
Water Supply
Inlet
Junction Box
Water
Regulator
Compressor
Drier
Control Water Valve
Bin Control
Ice Chute
Evaporator
Expansion
Valve
Flush Water
Valve
Control Box
Gear Motor

11
2. CONTROL BOX LAYOUT
F-800MAH/-C
Note: The above component names are identical with the Wiring Label, but not with
the Parts List.
PRESSURE
SWITCH
CONNECTOR
START
CAPACITOR RUN
CAPACITOR
WATER CONTROL
RELAY
FLUSH
TIMER TRANSFORMER
GEAR
MOTOR
RELAY
GEAR
MOTOR
CAP.
FLUSH
ICE
FAN
MOTOR
CAP
GEAR MOTOR
PROTECT RELAY STARTER
CONTROL
TIMER
FUSE
(GEAR MOTOR
)
FUSE
POWER
SWITCH
FLUSH
SWITCH
CIRCUIT PROTECT
RELAY

12
F-800MWH/-C
PRESSURE
SWITCH
CONNECTOR
START
CAPACITOR RUN
CAPACITOR
WATER CONTROL
RELAY
TRANSFORMER
GEAR
MOTOR
RELAY
FLUSH
ICE
GEAR MOTOR
PROTECT RELAY
STARTER
CONTROL
TIMER
FLUSH
SWITCH
POWER
SWITCH
FUSE
FUSE
(GEAR MOTOR)
FLUSH
TIMER
CIRCUIT PROTECT
RELAY GEAR
MOTOR
CAP.

13
III. TECHNICAL INFORMATION
1. WATER CIRCUIT AND REFRIGERATION CIRCUIT
F-800MAH/-C

14
F-800MWH/-C

15
2. WIRING DIAGRAM
F-800MAH/-C, F-800MWH/-C

16
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.

17
[b] When Reservoir has been filled, Gear Motor starts immediately.

18
[c] Compressor starts about 60 sec. after Gear Motor starts.

19
[d] Bin Control operates, and about 6 sec. later, Compressor and Gear Motor stop
simultaneously.

20
[e] Low Water (Except Water-cooled Model).