Hoshizaki F-1000MAF-22C User manual

SERVICE MANUAL
ISSUED: JULY. 13, 1999
MODEL
HOSHIZAKI
MODULAR FLAKER
F-1000MAF-22C
NO: 73088
DEC.15,2003
REVISED:

2
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.
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 .................................................................................................... 4
1. ICEMAKER............................................................................................................. 4
II. GENERAL INFORMATION ...................................................................................... 5
1. CONSTRUCTION................................................................................................... 5
2. CONTROL BOX LAYOUT ...................................................................................... 6
III. TECHNICAL INFORMATION.................................................................................. 7
1. WATER CIRCUIT AND REFRIGERANT CIRCUIT ................................................ 7
2. WIRING DIAGRAM ................................................................................................ 8
3. SEQUENCE OF ELECTRICAL CIRCUIT............................................................... 9
4. TIMING CHART.................................................................................................... 19
5. PERFORMANCE DATA ....................................................................................... 22
IV. SERVICE DIAGNOSIS ......................................................................................... 23
1. NO ICE PRODUCTION ........................................................................................ 23
2. LOW ICE PRODUCTION ..................................................................................... 25
3. OTHERS............................................................................................................... 26
V. REMOVAL AND REPLACEMENT OF COMPONENTS ........................................ 27
1. SERVICE FOR REFRIGERANT LINES ............................................................... 27
[a] REFRIGERANT RECOVERY ......................................................................... 27
[b] EVACUATION AND RECHARGE ................................................................... 27
2. BRAZING.............................................................................................................. 28
3. REMOVAL AND REPLACEMENT OF COMPRESSOR....................................... 29
4. REMOVAL AND REPLACEMENT OF DRIER ..................................................... 30
5. REMOVAL AND REPLACEMENT OF EXPANSION VALVE............................... 31
6. REMOVAL AND REPLACEMENT OF EVAPORATOR ASSEMBLY ................... 32
7. REMOVAL AND REPLACEMENT OF FAN MOTOR ........................................... 36
8. REMOVAL AND REPLACEMENT OF CONTROL WATER VALVE .................... 36
9. REMOVAL AND REPLACEMENT OF FLUSH WATER VALVE .......................... 37
VII. MAINTENANCE AND CLEANING INSTRUCTIONS........................................... 38
1. PREPARING THE ICEMAKER FOR LONG STORAGE ...................................... 38
2. CLEANING INSTRUCTIONS ............................................................................... 39
3. MAINTENANCE ................................................................................................... 43
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.

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I. SPECIFICATION
1. ICEMAKER
F-1000MAF-22
We reserve the right to make changes in specifications and design without prior notice.
AC SUPPLY VOLTAGE 208-230/60/1 (3 wire with neutral for 115V)
COMPRESSOR 240 V 4.5 RLA 34 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 15 A
MAX. HACR BREAKER (USA ONLY) 15 A
MAX. CIRC. BREAKER (CANADA ONLY) 15 A
MINIMUM CIRCUIT AMPACITY 15 A
APPROXIMATE ICE PRODUCTION Ambient
WATER TEMP. (˚F)
PER 24 HR. Temp.(˚F) 50 70 90
lbs./day ( kg/day ) 70
*860 (390)
820 (360)
790 (348)
Reference without *marks 80 765 (338) 720 (327)
710 (317)
90 680 (307)
*670 (304)
635 (288)
100 615 (279) 585 (271) *555 (252)
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.) 1205 (4.3)
1155 (3.2)
POTABLE WATER 80 (12) 103 (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 REK3-0124-PFV
CONDENSER Air-cooled, Fin and tube type
EVAPORATOR Copper Tube on Cylinder
REFRIGERANT CONTROL Thermostatic Expansion Valve
REFRIGERANT CHARGE R-22 1 lb.7oz. (660g)
DESIGN PRESSURE High 400 PSIG, Low 230 PSIG
P.C. BOARD CIRCUIT PROTECTION High Voltage Cut-off Relay
COMPRESSOR PROTECTION Internal Protector
GEAR MOTOR PROTECTION Manual reset Circuit Breaker or Fuse 1.5A
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 187-253 V
AMBIENT TEMP. 45-100˚ F
WATER SUPPLY TEMP. 45-90˚ F
WATER SUPPLY PRESSURE 10-113 PSIG

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II. GENERAL INFORMATION
1. CONSTRUCTION
F-1000MAF-22
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

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2. CONTROL BOX LAYOUT
F-1000MAF-22
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

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III. TECHNICAL INFORMATION
1. WATER CIRCUIT AND REFRIGERATION CIRCUIT
F-1000MAF-22

8
2. WIRING DIAGRAMS
F-1000MAF-22

9
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.

10
[b] When Reservoir has been filled, Gear Motor starts immediately.

11
[c] Compressor starts about 60 sec. after Gear Motor starts.

12
[d] Bin Control operates, and about 6 sec. later, Compressor and Gear Motor stop
simultaneously.

13
[e] Low Water

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[f] Dirty Air Filter, Pressure Switch to “OPEN”, Compressor and Gear Motor operates
intermittently.

15
[g] When Flush Switch is moved to “FLUSH” position, Flush Water Valve opens and
flushes Reservoir and Evaporator.

16
[h] When Flush Timer operates (for 15 min. every 12 hours).

17
[i] When 208-230V are supplied to Circuit Protect Relay, it protects the circuit from
miswiring. If the power supply is properly connected, the contact of Circuit Protect
Relay does not move even when the coil is energized.

18
[j] When input voltage is too low, (Less than 70%), Gear Motor Fuse (1.5A) is blown
causing the Compressor and Gear Motor to turn off immediately.

19
Miswiring. Circuit Protect Relay operates.)
Proper wiring. The unit starts.
BIN CONTROL
OFF ON
1. CIRCUIT PROTECT
RELAY
2. WATER LEVEL
3. FLOAT
SWITCH
UPPER
LOWER
4. WATER CONTROL
RELAY
5. CONTROL WATER
VALVE
6. FLUSH TIMER
7. FLUSH SWITCH
8. FLUSH WATER
VALVE
9. BIN CONTROL
10. GEAR MOTOR
RELAY
11. GEAR MOTOR
12. FAN MOTOR
13. COMPRESSOR
14. PRESSURE
SWITCH
15. HEATER
ON
OFF
ON
OFF
ON
OFF
ON
OFF
ON
OFF
1 - 2
2 - 3
FLUSH
ICE
ON
OFF
ON
OFF
ON
OFF
ON
OFF
ON
OFF
ON
OFF
ON
OFF
ON
OFF
1 sec
60 sec
6 sec 1 sec
60 sec
UPPER
LOWER
BOTTOM
4. TIMING CHART

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1. CIRCUIT PROTECT
RELAY
2. WATER LEVEL
3. FLOAT
SWITCH
UPPER
LOWER
4. WATER CONTROL
RELAY
5. CONTROL WATER
VALVE
6. FLUSH TIMER
7. FLUSH SWITCH
8. FLUSH WATER
VALVE
9. BIN CONTROL
10. GEAR MOTOR
RELAY
11. GEAR MOTOR
12. FAN MOTOR
14. PRESSURE
SWITCH
15. HEATER
ON
OFF
ON
OFF
ON
OFF
ON
OFF
ON
OFF
1 - 2
2 - 3
FLUSH
ICE
ON
OFF
ON
OFF
ON
OFF
ON
OFF
ON
OFF
ON
OFF
ON
OFF
ON
OFF
UPPER
LOWER
BOTTOM
LOW WATER FLUSH TIMER
21 min every 12 hr
150 sec 1 sec 150 sec
90 sec 60 sec 90 sec 60 sec
1 sec
13. COMPRESSOR