Hoshizaki F-500BAF Service manual
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Self-Contained Flaker
Model
F-500BAF
“A Superior Degree of Reliability” www.hoshizaki.com
SERVICE MANUAL
Number: 73074
Issued: 3-2-1999
Revised: 12-26-2003
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: 1-800-233-1940 Technical Service
(770) 487-2331
Fax: (770) 487-3360
Web Site: www.hoshizakiamerica.com
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
3
4
I. Specifications
F-500BAF
AC SUPPLY VOLTAGE
COMPRESSOR
GEAR MOTOR
FAN MOTOR
OTHER
MAXIMUM FUSE SIZE
MAX. HACR BREAKER (USA ONLY)
MAX. CIRC. BREAKER (CANADA ONLY)
MINIMUM CIRCUIT AMPACITY
APPROXIMATE ICE PRODUCTION
PER 24 HR.
lbs./day ( kg/day )
Reference without *marks
115/60/1
120 V
120 V
120 V
120 V
20 A
20 A
20 A
7.9 RLA 51 LRA
1.6 FLA 1/6 HP
0.85 FLA 1/15 HP
0.03 A
20 A
Ambient
Temp.(ｰF)
70
50
WATER TEMP. (ｰF)
70 90
* 478 (217) 458 (208) 438 (199)
80
90
419 (190) 400 (182) 383 (174)
366 (166) * 359 (163) 335 (152)
100 320 (145) 306 (139) * 287 (130)
Flake
Approx. 70% , Ice (90/70ｰF, Conductivity 200 ｵs/cm)
250 lbs.
90/70ｰF
900 (6.0)
43 (12)
70/50ｰF
854 (4.3)
57 (12)
SHAPE OF ICE
ICE QUALITY
APPROXIMATE STORAGE CAPACITY
ELECTRIC & WATER CONSUMPTION
ELECTRIC W (kWH/100 lbs.)
POTABLE WATER
gal./24HR (gal./100 lbs.)
EXTERIOR DIMENSIONS (WxDxH)
EXTERIOR FINISH
WEIGHT
CONNECTIONS - ELECTRIC
- WATER SUPPLY
- DRAIN
ICE MAKING SYSTEM
HARVESTING SYSTEM
ICE MAKING WATER CONTROL
COOLING WATER CONTROL
BIN CONTROL SYSTEM
COMPRESSOR
CONDENSER
EVAPORATOR
REFRIGERANT CONTROL
REFRIGERANT CHARGE
DESIGN PRESSURE
P.C. BOARD CIRCUIT PROTECTION
COMPRESSOR PROTECTION
GEAR MOTOR PROTECTION
REFRIGERANT CIRCUIT PROTECTION
LOW WATER PROTECTION
ACCESSORIES - SUPPLIED
- REQUIRED
OPERATING CONDITIONS
DRAWING NO. (DIMENSIONS)
38" x 29" x 36" (965 x 735 x 915 mm)
PVC Coated Galvanized Steel; Galvanized Steel (Rear);
Stainless Steel (Top)
Net 210 lbs. ( 95 kg ), Shipping 245 lbs. ( 111 kg )
Permanent Connection
Inlet 1/2" FPT
Drain Pan 3/4" FPT
Bin Drain 3/4" FPT
Auger type
Direct Driven Auger ( 1/6 HP Gear Motor )
Float Switch
N/A
Mechanical Bin Control ( Proximity Sw. )
Hermetic, Model RS43C1E-CAA
Air-cooled, Fin and tube type
Copper Tube on Cylinder
Thermostatic Expansion Valve
R-404A, 1 lb.
(470 g)
High 460 PSIG, Low 290 PSIG
High Voltage Cut-off Relay
Auto-reset Overload Protector
Manual reset Circuit Breaker
Auto-reset High Pressure Control Switch
Float Switch and Timer
Ice Scoop, Spare Fuse
Legs
VOLTAGE RANGE
AMBIENT TEMP.
WATER SUPPLY TEMP.
WATER SUPPLY PRESSURE
339850---
104 - 127 V
45 - 100ｰ F
45 - 90ｰ F
10 - 113 PSIG
We reserve the right to make changes in specifications and design without prior notice.
5
F-500BAF-C
AC SUPPLY VOLTAGE
COMPRESSOR
GEAR MOTOR
FAN MOTOR
OTHER
MAXIMUM FUSE SIZE
MAX. HACR BREAKER (USA ONLY)
MAX. CIRC. BREAKER (CANADA ONLY)
MINIMUM CIRCUIT AMPACITY
APPROXIMATE ICE PRODUCTION
PER 24 HR.
lbs./day ( kg/day )
Reference without *marks
115/60/1
120 V
120 V
120 V
120 V
20 A
20 A
20 A
20 A
Ambient
Temp.(ｰF)
70
80
90
100
Cubelet
7.9 RLA 51 LRA
1.6 FLA 1/6 HP
0.85 FLA 1/15 HP
0.03 A
50
W ATER TEMP. (ｰF)
70 90
* 431 (196) 415 (188) 398 (181)
381 (173) 365 (166) 350 (159)
336 (152) * 333 (151) 308 (140)
295 (134) 283 (128) * 263 (119)
Approx. 80% , Ice (90/70ｰF, Conductivity 200 ｵs/cm)
250 lbs.
90/70ｰF
903 (6.5)
40 (12)
70/50ｰF
864 (4.8)
52 (12)
SHAPE OF ICE
ICE QUALITY
APPROXIMATE STORAGE CAPACITY
ELECTRIC & WATER CONSUMPTION
ELECTRIC W (kW H/100 lbs.)
POTABLE WATER
gal./24HR (gal./100 lbs.)
EXTERIOR DIMENSIONS (WxDxH)
EXTERIOR FINISH
W EIGHT
CONNECTIONS - ELECTRIC
- W ATER SUPPLY
- DRAIN
ICE MAKING SYSTEM
HARVESTING SYSTEM
ICE MAKING WATER CONTROL
COOLING W ATER CONTROL
BIN CONTROL SYSTEM
COMPRESSOR
CONDENSER
EVAPORATOR
REFRIGERANT CONTROL
REFRIGERANT CHARGE
DESIGN PRESSURE
P.C. BOARD CIRCUIT PROTECTION
COMPRESSOR PROTECTION
GEAR MOTOR PROTECTION
REFRIGERANT CIRCUIT PROTECTION
LOW WATER PROTECTION
ACCESSORIES - SUPPLIED
- REQUIRED
OPERATING CONDITIONS
DRAWING NO. (DIMENSIONS)
38" x 29" x 36" (965 x 735 x 915 mm)
PVC Coated Galvanized Steel; Galvanized Steel (Rear);
Stainless Steel (Top)
Net 210 lbs. ( 95 kg ), Shipping 245 lbs. ( 111 kg )
Permanent Connection
Inlet 1/2" FPT
Drain Pan 3/4" FPT
Bin Drain 3/4" FPT
Auger type
Direct Driven Auger ( 1/6 HP Gear Motor )
Float Switch
N/A
Mechanical Bin Control ( Proximity Sw. )
Hermetic, Model RS43C1E-CAA
Air-cooled, Fin and tube type
Copper Tube on Cylinder
Thermostatic Expansion Valve
R-404A, 1 lb.
(470 g)
High 460 PSIG, Low 290 PSIG
High Voltage Cut-off Relay
Auto-reset Overload Protector
Manual reset Circuit Breaker
Auto-reset High Pressure Control Switch
Float Switch and Timer
Ice Scoop, Spare Fuse
Legs
VOLTAGE RANGE
AMBIENT TEMP.
W ATER SUPPLY TEMP.
W ATER SUPPLY PRESSURE
339850---
104 - 127 V
45 - 100ｰ F
45 - 90ｰ F
10 - 113 PSIG
We reserve the right to make changes in specifications and design without prior notice.
6
II. General Information
1. Construction
F-500BAF, F-500BAF-C
Side Panel
Front Panel
Spout
Gear Motor
Access Valve
Compressor
Control Box
7
Top Panel
Side Panel
Sliding Door
Water Supply Inlet
Control Water Valve
Reservoir
Evaporator
Condenser
Condenser Fan
2. Ice Making Unit
8
3. Control Box Layout
F-500BAF, F-500BAF-C
PRESSURE
SWITCH
TRANSFORMER
FLUSH VALVE
CONTROL RELAY
CONNECTOR
CONTROL
TIMER
STARTER
FLUSH
FLUSH SWITCH
ICE
ON
POWER SWITCH
OFF
RUN
CAPACITOR
FUSE
CIRCUIT PROTECT
RELAY
START
CAPACITOR
CIRCUIT
BREAKER
GEAR MOTOR
PROTECT RELAY
CAPACITOR FOR
GEAR MOTOR
CAPACITOR FOR
FAN MOTOR
WATER CONTROL
RELAY
Note: The above component names are identical with the wiring label, but not with the parts list.
9
4. Timer Board
[a] Solid-State Control
1) A HOSHIZAKI exclusive solid-state control is employed in the self-contained flaker icemakers.
2) A printed circuit board (hereafter called “timer board”) includes a stable and high quality control system.
3) All models are pre-tested and factory adjusted.
[b] Timer Board
CAUTION
1. Fragile, handle very carefully.
2. A timer board contains CMOS (Complementary Metal-Oxide
Semiconductor) integrated circuits, which are susceptible to failure due to static discharge. It is especially important to use an anti-static wrist strap when handling or replacing the board.
3. Do not touch the electronic devices on the board or the back of the board to prevent damage to the board.
4. Do not change wiring and connections. Especially, never misconnect terminals.
5. Do not fix the electronic devices or parts on the board in the field. Always replace the whole board assembly when it goes bad.
The icemaker is controlled by the timer board for the following purposes:
1) To prevent the gear motor and the compressor from starting or stopping simultaneously.
2) To reduce remaining ice in the refrigeration casing.
3) To protect the unit in case of low water and low water pressure.
4) To protect the unit in case the bin control causes chattering.
10
Compressor Relay
[c] Sequence
Fig. 1
Fig. 2
11
Gear Motor Relay
P A R T C O D E
M O D E L
R A T I N G
T 1
T 2
T 3
T 4
T 5
T 6
Fig. 3
4 3 7 3 0 5 0 1
H 2 A A 1 4 4 C 0 1
2 4 V A C 5 0 / 6 0 H z
6 0 ± 1 5 s e c .
9 0 ± 2 2 s e c .
1 5 0 ± 4 5 s e c .
1 s e c .
o r l e s s
6 .
7 s e c .
± 7 0 %
6 .
7 s e c .
± 7 0 %
12
Functions of Terminals
1) Terminals 1, 2
Power supply AC 24V.
2) Terminals 3, 4
Control X 1 (GM) and X 2 (CM) Relays.
When closed, energize X 1 (GM) in 1 sec. and X 2 (CM) in 60 sec.
When opened, de-energize X 1 (GM) in 150 sec. and X 2 (CM) in 90 sec.
3) Terminals 5, 6
Control X 1 (GM) and X 2 (CM) Relays.
When opened, de-energize X 1 (GM) and X 2 (CM) immediately.
When closed again, energize X 1 (GM) in 1 sec. and X 2 (CM) in 60 sec.
4) Terminals 7, 8, 9
X1 (GM) contacts.
8 is a movable contact, 7 is a make contact, and 9 is a break contact.
5) Terminals 10, 11
Control X 2 (CM) Relays.
When opened, de-energize X 2 (CM) immediately.
When closed, energize X 2 (CM) immediately.
Note: 1. X 2 Relay is a single pole, normally open relay, and its terminals are mounted on the relay itself.
2. The above operation times are median. See Fig. 3 for details.
13
III. Technical Information
1. Water Circuit and Refrigerant Circuit
F-500BAF, F-500BAF-C
CONTROL
WATER
VALVE
FLOAT
SWITCH
WATER
INLET
RESERVOIR
WATER LEVEL
EVAPORATOR
SPOUT
OVERFLOW
GEAR
MOTOR
DRAIN PAN
DRAIN
OUTLET
DRIER
DRAIN PAN
EXPANSION
VALVE
FLUSH
WATER
VALVE
CONDENSER
CONDENSER
FAN MOTOR
ACCESS
VALVE
PRESSURE
SWITCH
ACCESS
VALVE
WATER CIRCUIT
REFRIGERANT CIRCUIT
COMPRESSOR
14
2. Wiring Diagram
F-500BAF, F-500BAF-C
15
3. Sequence of Electrical Circuit
F-500BAF, F-500BAF-C
[a] When power switch is moved to "ON" position and flush switch to "ICE"
position, water starts to be supplied to reservoir.
115-120/60/1
L N
K
8
CIRCUIT
PROTECT
RELAY (X5)
7
5
3
1
V
CONTROL
SWITCH
PRESSURE
SWITCH
K K
BR W
K
START CAP.
270-324MFD
RUN CAP.
15MFD
O
K
K
2
1
5
DBU
STARTER
S
COMP.
C
BK
MOT.
PROTECTOR
3 1 K
R
R
O
GEAR MOTOR
PROTECT RELAY
(X4)
K
5
7
1
3
6
8
4
2
CIRCUIT
SWITCH
K
DBU
CONDENSER FAN MOTOR K
(BR) P
(W)
K
GY
THERMAL
PROTECTOR
BK
(O)
(BR)
GEAR
MOTOR
( Y )
K
K
(DBU)
LBU
K
CAP.
10MFD
V
CAP.
2.5MFD
(BK)
O
O
(O) W
TRANS.
8 7 CONTROL
TIMER
4
R
K
FUSE (1A)
BK 24V (BK)
FLUSH WATER
VALVE
LBU
LBU
9
R
BK V P
3
1 2 3 4 5 6 10 11
GY
O
K
CONTROL
WATER VALVE
5 1
R
4
3 2
FLUSH RELAY (X6)
K
P
K K
P
FLUSH
SWITCH
LBU
BIN CONTROL SWITCH
O
1
3
5
7
4
6
8
2
BR
R
K
BR
DBU
O
K
K
(O)
BK
K (BU)
(BK)
FLOAT SWITCH
(F-500BAF(-C))
16
WIRE COLOR CODE
BR
W
BK
R
O
GY
P
DBU
V
Y
LBU
BU
BROWN
WHITE
BLACK
RED
ORANGE
GRAY
PINK
DARK BLUE
VIOLET
YELLOW
LIGHT BLUE
BLUE
[b] When reservoir has been filled up, gear motor starts immediately.
115-120/60/1
L N
K 1
C
8
CIRCUIT
PROTECT
RELAY (X5)
5
7
3
1
V
CONTROL
SWITCH
O
K 4
C
K
BR W
3
C
K 6
C
15MFD
START CAP.
270-324MFD
RUN CAP.
O
K 3
A
K 1
A
2
1
5
DBU
STARTER
COMP.
S
R
C
BK
MOT.
PROTECTOR
3 1 K
A
9
R
GEAR MOTOR
PROTECT RELAY
(X4)
K
A
6
1
3
5
7
4
2
6
8
PRESSURE
SWITCH
CIRCUIT
SWITCH
K
DBU
A
2
CONDENSER FAN MOTOR K
(BR) P
6
B
(W)
K 5
A
GY
THERMAL
PROTECTOR
BK
(O)
(BR)
GEAR
MOTOR
( Y )
K
K
8
A
(DBU)
LBU
K 4
A
7
A
CAP.
10MFD
V
CAP.
2.5MFD
(BK)
O
O
(O) W
TRANS.
R
K 2
FUSE (1A)
BK 24V (BK)
B
LBU
FLUSH WATER
VALVE
LBU
8
9
7
K
D
2
4
1 2 3 4 5 6 10 11
R
BK
CONTROL
TIMER
V P
3
GY
O
CONTROL
WATER VALVE
5 1
R
4
3 2
FLUSH RELAY (X6)
K
B
1
P
1
3
5
7
4
6
8
2
BR
R
K 1
D
BR
DBU
O
K
K 5
3
B
B
(O)
BK
K
B
4
K 3
D
K 4
D
P
FLUSH
SWITCH
LBU
BIN CONTROL SWITCH
O
(BU)
(BK)
FLOAT SWITCH
(F-500BAF(-C))
17
WIRE COLOR CODE
BR
W
BK
R
O
GY
P
DBU
V
Y
LBU
BU
BROWN
WHITE
BLACK
RED
ORANGE
GRAY
PINK
DARK BLUE
VIOLET
YELLOW
LIGHT BLUE
BLUE
[c] Compressor starts about 60 sec. after gear motor starts.
115-120/60/1
L N
K
C
1
8
CIRCUIT
PROTECT
RELAY (X5)
7
5
3
1
V
CONTROL
SWITCH
O
K
C
4 K
BR W
C
3 K
C
6
15MFD
START CAP.
270-324MFD
RUN CAP.
O
K
A
3
K
A
1
2
1
5
DBU
STARTER
COMP.
S
R
C
BK
MOT.
PROTECTOR
3 1 K 9
A
R
GEAR MOTOR
PROTECT RELAY
(X4)
K 6
A
1
3
5
7
4
2
6
8
PRESSURE
SWITCH
CIRCUIT
SWITCH
K
DBU
2
A
CONDENSER FAN MOTOR
(W)
K 5
A
GY
THERMAL
PROTECTOR
BK
(O)
(BR) P
(BR)
GEAR
MOTOR
K
B
6
LBU
( Y )
K
A
8
K 7
A
(DBU)
K
A
4
CAP.
10MFD
V
CAP.
2.5MFD
(BK)
O
O
(O) W
TRANS.
R
K 2
FUSE (1A)
BK 24V (BK)
B
LBU
FLUSH WATER
VALVE
LBU
8
9
7
K 2
D
4
1 2 3 4 5 6 10 11
R
BK
CONTROL
TIMER
V P
3
GY
O
CONTROL
WATER VALVE
5 1
R
4
3 2
FLUSH RELAY (X6)
K 1
B
P
1
3
5
7
4
8
2
6
BR
R
K
D
1
BR
DBU
O
K
B
3
K
B
5
(O)
BK
K 4
B
K
D
3 K
D
4
P
FLUSH
SWITCH
LBU
BIN CONTROL SWITCH
O
(F-500BAF(-C))
(BU)
(BK)
FLOAT SWITCH
18
WIRE COLOR CODE
BR
W
BK
R
O
GY
P
DBU
V
Y
LBU
BU
BROWN
WHITE
BLACK
RED
ORANGE
GRAY
PINK
DARK BLUE
VIOLET
YELLOW
LIGHT BLUE
BLUE
[d] Compressor stops about 90 sec. after bin control operates. Gear motor stops about
60 sec. later, and water is drained from the water circuit. Water can be also drained by moving flush switch to "FLUSH" position.
115-120/60/1
L N
K 1
C
K 4
C
8
CIRCUIT
PROTECT
RELAY (X5)
5
7
3
1
V
CONTROL
SWITCH
O
K
BR W
3
C
K 6
C
15MFD
START CAP.
270-324MFD
RUN CAP.
O
K 3
A
K 1
A
2
1
5
DBU
STARTER
S
COMP.
C
BK
MOT.
PROTECTOR
3 1 K
A
9
R
R
GEAR MOTOR
PROTECT RELAY
(X4)
K
A
6
1
3
5
7
4
2
6
8
PRESSURE
SWITCH
CIRCUIT
SWITCH
K
DBU
A
2
K 5
A
CONDENSER FAN MOTOR
(W)
GY
THERMAL
PROTECTOR
BK
(O)
(BR) P
(BR)
GEAR
MOTOR
K 6
B
LBU
( Y )
K 8
A
K
A
7
(DBU)
K 4
A
CAP.
10MFD
V
CAP.
2.5MFD
(BK)
O
O
(O) W
TRANS.
R
K
B
2
FUSE (1A)
BK 24V (BK)
LBU
FLUSH WATER
VALVE
LBU
8
9
7
K
D
2
4
1 2 3 4 5 6 10 11
R
BK
CONTROL
TIMER
V P
3
GY
O
CONTROL
WATER VALVE
5 1
R
4
3 2
FLUSH RELAY (X6)
K
B
1
P
1
3
5
7
4
6
8
2
BR
R
K 1
D
BR
DBU
O
K
K 3
B
5
B
(O)
BK
K
B
4
K 3
D
K 4
D
P
FLUSH
SWITCH
LBU
BIN CONTROL SWITCH
O
(F-500BAF(-C))
(BU)
(BK)
FLOAT SWITCH
19
WIRE COLOR CODE
BR
W
BK
R
O
GY
P
DBU
V
Y
LBU
BU
BROWN
WHITE
BLACK
RED
ORANGE
GRAY
PINK
DARK BLUE
VIOLET
YELLOW
LIGHT BLUE
BLUE
[e] When 208 - 230V are supplied to the power supply due to miswiring, circuit protect relay operates, and the icemaker does not run.
115-120/60/1
L N
K 1
C
8
CIRCUIT
PROTECT
RELAY (X5)
3
1
7
5
V
CONTROL
SWITCH
O
K 4
C
K
BR W
3
C
K 6
C
15MFD
START CAP.
270-324MFD
RUN CAP.
O
K 3
A
K 1
A
2
1
5
DBU
STARTER
COMP.
S
R
C
BK
MOT.
PROTECTOR
3 1 K 9
A
R
GEAR MOTOR
PROTECT RELAY
(X4)
K
A
6
5
7
1
3
6
8
4
2
PRESSURE
SWITCH
CIRCUIT
SWITCH
K 2
DBU
A
K
A
5
GY
THERMAL
PROTECTOR
BK
(O)
CONDENSER FAN MOTOR K
(BR) P
6
B
(W) (BR) LBU
K 4
A
( Y )
K
K
8
A
(DBU)
7
A
CAP.
10MFD
V
CAP.
2.5MFD
(BK)
O
O
(O) W
TRANS.
R
K 2
B
FUSE (1A)
BK 24V (BK)
LBU
FLUSH WATER
VALVE
LBU
8
9
7
K
D
2
4
1 2 3 4 5 6 10 11
R
BK
CONTROL
TIMER
V P
3
GY
O
CONTROL
WATER VALVE
5 1
R
4
3 2
FLUSH RELAY (X6)
K
P
1
B
1
3
5
7
4
6
8
2
BR
R
K 1
D
BR
DBU
O
K 3
B
K 5
B
(O)
BK
K
B
4
K 3
D
K 4
D
P
FLUSH
SWITCH
LBU
BIN CONTROL SWITCH
O
(BU)
(BK)
FLOAT SWITCH
(F-500BAF(-C))
20
WIRE COLOR CODE
BR
W
BK
R
O
GY
P
DBU
V
Y
LBU
BU
BROWN
WHITE
BLACK
RED
ORANGE
GRAY
PINK
DARK BLUE
VIOLET
YELLOW
LIGHT BLUE
BLUE
4. Timing Chart
1. CIRCUIT PROTECT
RELAY
ON
OFF
2. WATER LEVEL
UPPER
UPPER
LOWER
BOTTOM
ON
OFF
3. FLOAT
SWITCH
LOWER
ON
OFF
4. WATER CONTROL
RELAY
ON
OFF
5. CONTROL WATER
VALVE
ON
OFF
6. FLUSH RELAY
7. FLUSH SWITCH
ON
OFF
FLUSH
ICE
8. FLUSH WATER
VALVE
ON
OFF
9. BIN CONTROL
10. GEAR MOTOR
RELAY
11. GEAR MOTOR
ON
OFF
ON
OFF
ON
OFF
12. FAN MOTOR
13. COMPRESSOR
14. PRESSURE
SWITCH
ON
OFF
ON
OFF
ON
OFF
Miswiring. Circuit Protect Relay operates.
Proper wiring. The unit starts.
BIN CONTROL
OFF ON
1 sec
60 sec
150 sec
90 sec
21
LOW WATER
1. CIRCUIT PROTECT
RELAY
2. WATER LEVEL
ON
OFF
UPPER
LOWER
BOTTOM
UPPER
ON
OFF
3. FLOAT
SWITCH
LOWER
ON
OFF
4. WATER CONTROL
RELAY
ON
OFF
5. CONTROL WATER
VALVE
ON
OFF
6. FLUSH RELAY
ON
OFF
7. FLUSH SWITCH
FLUSH
ICE
8. FLUSH WATER
VALVE
ON
OFF
9. BIN CONTROL
10. GEAR MOTOR
RELAY
11. GEAR MOTOR
ON
OFF
ON
OFF
ON
OFF
12. FAN MOTOR
13. COMPRESSOR
14. PRESSURE
SWITCH
ON
OFF
ON
OFF
ON
OFF
90 sec
150 sec
22
1 sec
CONDENSER FAN FAILURE
60 sec
FLUSH
FLUSH SWITCH
ICE
1. CIRCUIT PROTECT
RELAY
2. WATER LEVEL
ON
OFF
UPPER
LOWER
BOTTOM
ON
OFF
3. FLOAT
SWITCH
UPPER
LOWER
ON
OFF
4. WATER CONTROL
RELAY
ON
OFF
5. CONTROL WATER
VALVE
ON
OFF
6. FLUSH RELAY
ON
OFF
7. FLUSH SWITCH
8. FLUSH WATER
VALVE
FLUSH
ICE
ON
OFF
9. BIN CONTROL
10. GEAR MOTOR
RELAY
11. GEAR MOTOR
ON
OFF
ON
OFF
ON
OFF
12. FAN MOTOR
ON
OFF
150 sec
60 sec
1 sec
90 sec
13. COMPRESSOR
14. PRESSURE
SWITCH
ON
OFF
ON
OFF
23
5. Performance Data
F-500BAF
APPROXIMATE
ICE PRODUCTION
PER 24 HR.
lbs./day (kg/day)
APPROXIMATE ELECTRIC
CONSUMPTION watts
APPROXIMATE WATER
CONSUMPTION PER 24 HR.
gal./day (l/day)
EVAPORATOR OUTLET TEMP.
°F (°C)
HEAD PRESSURE
PSIG (kg/cm²G)
SUCTION PRESSURE
PSIG ( kg/cm²G )
TOTAL HEAT OF REJECTION
80
90
100
70
80
90
100
70
80
90
100
70
80
90
100
Ambient
Temp. (°F)
70
80
90
100
70
80
90
100
70
50
Water Temp. (°F)
70 90
*478 *(217) 458 (208) 438 (199)
419 (190) 400 (182) 383 (174)
366 (166) *359 *(163) 335 (152)
320 (145) 306 (139) *287 *(130)
*854 -861 -867 --
874 -880 -887 --
*8
8
12
15
893
915
--
--
*57 *(217)
50
44
38
(190)
(166)
(145)
*(-13)
(-13)
(-11)
(-9)
*900
923
55
48
*43 *(163)
37
8
12
*11
15
--
--
(208)
(182)
(139)
(-13)
(-11)
*(-11)
(-9)
908
*930
--
--
53 (199)
46 (174)
40 (152)
*34 *(129)
8
12
15
*15
(-13)
(-11)
(-9)
*(-9)
*221 *(15.5) 221 (15.6) 221 (15.5)
253 (17.8) 253 (17.8) 253 (17.8)
285 (20) *285 *(20) 285 (20)
327 (23)
*26 *(1.8)
28 (2.0)
327
26
28
(23)
(1.8)
(2.0)
*327
26
28
*(23)
(1.8)
(2.0)
31
34
Note: The data without *marks should be used for reference.
(2.1)
(2.4)
*31
34
*(2.0)
(2.4)
4683 BTU/h (AT 90°F /WT 70°F)
31 (2.1)
*34 *(2.4)
We reserve the right to make changes in specifications and design without prior notice.
24
F-500BAF-C
APPROXIMATE
ICE PRODUCTION
PER 24 HR.
lbs./day (kg/day)
APPROXIMATE ELECTRIC
CONSUMPTION watts
APPROXIMATE WATER
CONSUMPTION PER 24 HR.
gal./day (l/day)
EVAPORATOR OUTLET TEMP.
°F (°C)
HEAD PRESSURE
PSIG (kg/cm²G)
SUCTION PRESSURE
90
100
70
80
90
100
70
80
90
100
Ambient
Temp. (°F)
70
80
90
100
70
80
90
100
70
80
90
100
70
80
Water Temp. (°F)
50 70 90
*431 *(196) 415 (188) 398 (181)
381 (173) 365 (166) 350 (159)
336 (152) *333 *(151) 308 (140)
295 (134) 283 (128) *263 *(119)
*864
880
897
--
--
--
869
886
*902
--
--
--
875
891
907
--
--
--
912 --
*52 *(196)
46 (173)
40
35
*9
9
(152)
(134)
*(-13)
(-13)
917
50
44
--
(188)
(166)
*40 *(151)
34 (128)
9
12
(-13)
(-11)
*922 --
48 (181)
42 (159)
37 (140)
*32 *(119)
9
12
(-13)
(-11)
12
15
(-11)
(-9)
*12
15
*(-11)
(-9)
15
*15
(-9)
*(-9)
*225 *(15.8) 225 (15.8) 225 (15.8)
258 (18.1) 258 (18.1) 258 (18.1)
292 (20.5) *292 *(20.5) 292 (20.5)
332 (23.3) 332 (23.3) *332 *(23.3)
*27 *(1.9)
30 (2.1)
32
PSIG ( kg/cm²G )
TOTAL HEAT OF REJECTION
Note: The data without *marks should be used for reference.
(2.3)
27
30
(1.9)
(2.1)
*32 *(2.3)
35 (2.5) 35 (2.5)
4724 BTU/h (AT 90°F /WT 70°F)
27
30
(1.9)
(2.1)
32 (2.3)
*35 *(2.5)
We reserve the right to make changes in specifications and design without prior notice.
25
IV. Service Diagnosis
1. No Ice Production
PROBLEM
[1] The icemaker will not start.
[2] Water does not stop, and the icemaker will not start
[3] Water has been supplied, but the icemaker will not start.
POSSIBLE CAUSE a) Power Supply 1.
OFF position.
REMEDY
1.
Move to ON position.
b) c) d)
Power Switch
(Control Box)
Fuse (Control Box)
Circuit Protect Relay
2.
3.
4.
Blown fuse.
1.
Off position.
2.
Bad contacts.
1.
1.
Loose connection.
Bad contacts.
Blown out.
Miswiring.
2.
Tighten.
3.
Check for continuity and replace.
4.
Replace.
1.
Move to ON position.
2.
Check for continuity and replace.
1.
Check for short circuit and replace.
1.
Check power supply voltage and wire properly.
1.
Move to ICE position.
e) Flush Switch 1.
FLUSH position.
f) Transformer
2.
1.
Bad contacts.
Coil winding opened.
2.
Check for continuity and replace.
1.
Replace.
g) Control Water Valve 1.
Coil winding opened.
1.
Replace.
h) Shut-off Valve 1.
Closed.
1.
Open.
2.
Water failure.
2.
Wait till water is supplied.
1.
Connect.
i) Plug and Receptacle
(Control Box)
1.
Disconnected.
2.
Terminal out of Plug or Receptacle.
a) Water Control Relay 1.
Contact fused.
2.
1.
Insert terminal back in position
Replace.
2.
Coil winding opened.
2.
Replace.
b) Float Switch 1.
Bad contacts.
1.
Check for continuity and replace.
2.
Clean or replace.
c) Flush Water Valve d) Hoses
2.
Float does not move freely.
1.
Valve seat clogged and water leaking.
1.
Disconnected.
a) Water Control Relay 1.
Bad contacts.
1.
Clean or replace b) c)
Bin Control
Gear Motor
Protector
(Circuit Breaker)
1.
2.
1.
Bad contacts.
Activator does not move freely.
Tripped.
1.
Connect.
Check for continuity and replace.
Check for continuity and replace.
Clean axle and its corresponding holes or replace Bin Control.
1.
Find out the cause, get rid of it, and press
Reset Button on
Circuit Breaker.
26
PROBLEM
[4] Gear Motor starts, but Compressor will not start or operates intermittently
POSSIBLE CAUSE d) Gear Motor Protect
Relay
1.
Coil winding opened. 1.
Replace.
2.
Bad contacts.
REMEDY
2.
Check for continuity and replace.
e) Control Timer
(Printed Circuit
Board)
1.
Broken.
1.
Replace.
a) Pressure Switch 1.
Dirty Air Filter or
Condenser.
2.
Ambient temperature too warm.
1.
Clean.
2.
Get cooler.
b) X2 Relay on Control
Timer c) Starter d) Start Capacitor or
Run Capacitor
3.
Fan not rotating.
3.
See "3. [1] a) Fan
Motor."
4.
Recharge.
4.
Refrigerant overcharged.
5.
Refrigerant line or components plugged.
5.
Clean and replace drier.
6.
Bad contacts.
6.
Check for continuity and replace.
7.
Loose connections.
7.
Tighten.
1.
Bad contacts.
1.
Check for continuity and replace.
2.
Coil winding opened. 2.
Replace Timer.
1.
Bad contacts.
1.
Check for continuity and replace.
2.
Coil winding opened. 2.
Replace.
3.
Loose Connections.
3.
Tighten.
1.
Defective.
1.
Replace.
27
PROBLEM
[5] Gear Motor and
Compressor start but no ice is produced.
POSSIBLE CAUSE e) Compressor
REMEDY
1.
Loose connections.
1.
Tighten.
2.
Motor winding opened or grounded.
2.
Replace.
f) Power Supply a) Refrigerant Line
3.
1.
Circuit Ampacity too low.
1.
Gas leaks.
2.
Motor Protector tripped.
Refrigerant line clogged.
3.
Find out the cause of overheat or overcurrent.
1.
Install a larger-sized conductor.
1.
Check for leaks with a leak detector. Reweld leak, replace drier and charge with refrigerant. The amount of refrigerant is marked on
Nameplate or Label.
2.
Replace the clogged component.
28
2. Low Ice Production
PROBLEM POSSIBLE CAUSE
[1] Low ice production a) Refrigerant Line b) High-side Pressure
Too High
1.
Gas leaks.
2.
Refrigerant line clogged.
3.
Overcharged.
1.
Dirty Air Filter or
Condenser.
2.
Ambient temperature too warm.
REMEDY
1.
See "1. [5] a)
Refrigerant Line."
2.
Replace the clogged component.
3.
Recharge.
1.
Clean.
2.
Get cooler.
c) Expansion Valve
(not adjustable)
3.
Fan rotating too slow.
1.
Low-side pressure too low.
2.
Low-side pressure too high.
3.
See "3 [1] a) Fan
Motor."
1.
Replace.
2.
See if Expansion
Valve Bulb is mounted properly, and replace the valve if necessary.
29
3. Other
PROBLEM
[1] Abnormal noise
[2] Overflow from
Reservoir (Water does not stop.)
[3] Gear Motor Fuse blows or Circuit
Breaker trips frequently.
a) Fan Motor
POSSIBLE CAUSE
1.
Bearing worn out.
REMEDY
1.
Replace.
2.
Fan blade deformed. 2.
Replace fan blade.
b) Compressor c) Refrigerant Lines
3.
Fan blade does not move freely.
1.
Bearings worn out, or cylinder valve broken.
2.
Mounting pad out of position.
1.
Rub or touch lines or other surfaces.
2.
Activator does not move freely.
3.
1.
2.
1.
Replace.
Replace.
Reinstall.
Replace.
d) Gear Motor (Ice
Making) e) Evaporator
1.
Bearing or Gear worn out / damaged.
1.
2.
Low-side pressure too low.
Scale on inside wall of Freezing Cylinder.
1.
Replace.
1.
See if Expansion
Valve Bulb is mounted properly, and replace the valve if necessary.
2.
Remove Auger. Use
"SCALE AWAY" or
"LIME-A-WAY" solution to clean periodically. If the water is found hard by testing, install a softener.
1.
Install a pressure
Reducing Valve
1.
Clean or replace.
a) Water Supply 1.
Water pressure too high.
b) Control Water Valve 1.
Diaphragm does not close.
c) Float Switch a) Power Supply
Voltage b) Evaporator Assy
1.
Bad contacts.
1.
Check for continuity and replace.
1.
Too high or too low.
1.
Connect the unit to a power supply of proper voltage.
1.
Bearings or Auger worn out.
1.
Replace Bearing or
Auger.
c) Bin Control 1.
Bad contacts.
1.
Check for continuity and replace.
2.
Clean Axle and its corresponding holes or replace Bin Control.
30
V. Removal and Replacement of Components
IMPORTANT
Ensure all components, fasteners and thumbscrews are securely in place after the equipment is serviced.
IMPORTANT
1. The Polyol Ester (POE) oils used in R-404A units can absorb moisture quickly. Therefore it is important to prevent moisture from entering the system when replacing or servicing parts.
2. Always install a new filter drier every time the sealed refrigeration system is opened.
3. Do not leave the system open for longer than 15 minutes when replacing or servicing parts.
1. Service for Refrigerant Lines
[a] Refrigerant Recovery
The icemaker unit is provided with two refrigerant access valves - one on the low-side and one on the high-side line. Using proper refrigerant practices recover the refrigerant from the access valves and store it in an approved container. Do not discharge the refrigerant into the atmosphere.
[b] Evacuation and Recharge [R-404A]
1) Attach charging hoses, a service manifold and a vacuum pump to the system. Be sure to connect charging hoses to both high-side and low-side access valves.
IMPORTANT
The vacuum level and vacuum pump may be the same as those for current refrigerants. However, the rubber hose and gauge manifold to be used for evacuation and refrigerant charge should be exclusively for POE oils.
2) Turn on the vacuum pump. Never allow the oil in the vacuum pump to flow backward.
3) Allow the vacuum pump to pull down to a 29.9" Hg vacuum. Evacuating period depends on pump capacity.
4) Close the low-side valve and high-side valve on the service manifold.
31
5) Disconnect the vacuum pump, and attach a refrigerant service cylinder to the highside line. Remember to loosen the connection, and purge the air from the hose. See the nameplate for the required refrigerant charge. Hoshizaki recommends only virgin refrigerant or reclaimed refrigerant which meets ARI Standard No. 700-88 be used.
6) A liquid charge is recommended for charging an R-404A system. Invert the service cylinder. Open the high-side, service manifold valve.
7) Allow the system to charge with liquid until the pressures balance.
8) If necessary, add any remaining charge to the system through the low-side. Use a throttling valve or liquid dispensing device to add the remaining liquid charge through the low-side access port with the unit running.
9) Close the two refrigerant access valves, and disconnect the hoses and service manifold.
10) Cap the access valves to prevent a possible leak.
2. Brazing
WARNING
1. Refrigerant R-404A itself is not flammable at atmospheric pressure and temperatures up to 176°F.
2. Refrigerant R-404A itself is not explosive or poisonous. However, when exposed to high temperatures (open flames) R-404A can be decomposed to form hydrofluoric acid and carbonyl fluoride both of which are hazardous.
3. Always recover the refrigerant and store it in an approved container. Do not discharge the refrigerant into the atmosphere.
4. Do not use silver alloy or copper alloy containing arsenic.
5. Do not use R-404A as a mixture with pressurized air for leak testing.
Refrigerant leaks can be detected by charging the unit with a little refrigerant, raising the pressure with nitrogen and using an electronic leak detector.
Note: All brazing-connections are clear-paint coated. Sandpaper the brazingconnections before unbrazing the components. Use a good abrasive cloth to remove coating.
32
3. Removal and Replacement of Compressor
IMPORTANT
Always install a new drier every time the sealed refrigeration system is opened. Do not replace the drier until after all other repair or replacement has been made.
1) Unplug the icemaker.
2) Remove the panels.
2) Remove the terminal cover on the compressor, and disconnect the compressor
wiring.
3) Recover the refrigerant and store it in an approved container, if required by an applicable law.
4) Remove the discharge, suction, and access pipes from the compressor using brazing equipment.
WARNING
When repairing a refrigerant system, be careful not to let the burner flame contact any electrical wires or insulation.
5) Remove the bolts and rubber grommets.
6) Slide and remove the compressor. Unpack the new compressor package. Install the new compressor.
7) Attach the rubber grommets of the prior compressor.
8) Sandpaper the discharge, suction and access pipes.
9) Place the compressor in position, and secure it using the bolts.
10) Remove plugs from the discharge, suction and access pipes.
11) Braze the access, suction and discharge lines (Do not change this order),
while purging with nitrogen gas flowing at the pressure of 3-4 PSIG.
12) Install the new drier.
33
13) Check for leaks using nitrogen gas (140 PSIG) and soap bubbles.
14) Evacuate the system, and charge it with refrigerant. See the nameplate for the required refrigerant charge and type.
15) Connect the terminals to the compressor, and replace the terminal cover in its correct position.
16) Replace the panels in their correct position.
17) Plug in the icemaker.
4. Removal and Replacement of Drier
IMPORTANT
Always install a new drier every time the sealed refrigeration system is opened. Do not replace the drier until after all other repair or replacement has been made.
1) Unplug the icemaker.
2) Remove the panels.
3) Recover the refrigerant and store it in an approved container, if required by an applicable law.
4) Remove the drier using brazing equipment.
5) Install the new drier with the arrow on the drier in the direction of the refrigerant flow.
Use nitrogen gas at the pressure of 3-4 PSIG when brazing the tubings.
6) Check for leaks using nitrogen gas (140 PSIG) and soap bubbles.
7) Evacuate the system, and charge it with refrigerant. See the nameplate for the required refrigerant charge and type.
8) Replace the panels in their correct position.
9) Plug in the icemaker.
34
5. Removal and Replacement of Expansion Valve
IMPORTANT
Sometimes moisture in the refrigerant circuit exceeds the drier capacity and freezes up at the expansion valve. Always install a new drier every time the sealed refrigeration system is opened. Do not replace the drier until after all other repairs or replacement have been made.
1) Unplug the icemaker.
2) Remove the panels.
3) Recover the refrigerant and store it in an approved container, if required by an applicable law.
4) Remove the expansion valve bulb at the evaporator outlet.
5) Remove the expansion valve cover, and remove the expansion valve using brazing equipment.
6) Braze the new expansion valve with nitrogen gas flowing at the pressure of 3-4
PSIG.
WARNING
Always protect the valve body by using a damp cloth to prevent the valve from overheating. Do not braze with the valve body exceeding 250°F.
7) Install the new drier.
8) Check for leaks using nitrogen gas (140 PSIG) and soap bubbles.
9) Evacuate the system. Charge it with refrigerant. See the nameplate for the required refrigerant charge and type.
10) Attach the bulb to the suction line. Be sure to secure the bulb using a band and
to insulate it.
11) Place the expansion valve cover in position.
12) Replace the panels in their correct position.
13) Plug in the icemaker.
35
6. Removal and Replacement of Evaporator Assembly
1) Drain the water from the evaporator by switching the flush switch to “FLUSH” on the control box.
2) Unplug the icemaker.
3) Remove the panels.
4) Remove the three thumbscrews and take off the spout from the evaporator.
Cutter
5) Loosen the cutter by a wrench and remove it.
6) Remove the cylinder gasket at the top of the evaporator.
Extruding Head
7) Grasp the top of the auger and move the auger towards you and then try to insert a
.02" round stock or pin gauge in between the back side of the auger shaft and the bearing surface. Check several locations around the auger shaft. If the gauge goes between the shaft and the bearing at any point, both the top bearing in the extruding head and the lower bearing in the housing should be replaced. Instructions for removing the housing are located later in this procedure.
.02” Round Stock
or Pin Gauge
Auger
Extruding
Head
Note: Replacing the bearing requires a bearing press adaptor. If one is not available, replace the whole extruding head and housing.
8) Remove the three socket head cap screws and lift off the extruding head.
Auger
9) Lift out the auger. If the area in contact with the bearing is worn or the blade is scratched, replace the auger.
36
Evaporator
Note: Skip the following steps 10) through 12) when the evaporator does not need replacement.
10) Recover the refrigerant and store it in an approved container, if required by an
applicable law.
IMPORTANT
Always install a new drier every time the sealed refrigeration system is opened. Do not replace the drier until after all other repair or replacement has been made.
11) Remove the bulb of the expansion valve.
12) Disconnect the brazing-connections of the expansion valve and the copper tube-
low side from the evaporator, using brazing equipment.
13) Remove the two truss head machine screws and the bracket securing the
evaporator.
14) Disconnect the three hoses from the evaporator.
15) Remove the four socket head cap screws securing the evaporator with the bearinglower.
16) Lift off the evaporator.
Housing, Lower Bearing and Mechanical Seal
17) The mechanical seal consists of two parts. One moves along with the auger, and the other is fixed on the housing. If the contact surfaces of these two parts are worn or scratched, the mechanical seal may cause water leaks and should be replaced.
18) Remove the O-ring from the housing.
19) Remove the four bolts and the housing from the gear motor. If inspection of the bearing inside the extruding head (earlier in this procedure) indicated that it is out of tolerance, replace both it and the bearing inside the housing.
Note: Replacing the bearing requires a bearing press adaptor. If one is not available, replace the whole extruding head and housing.
37
Gear Motor
20) Remove the coupling-spline on the gear motor shaft.
21) Remove the three bolts securing the gear motor.
22) Assemble the removed parts in the reverse order of the above procedure.
WARNING
Be careful not to scratch the surface of the O-ring, or it may cause water leaks.
Handle the mechanical seal with care not to scratch nor to contaminate its contact surface.
23) When replacing the evaporator:
(a) Braze the new evaporator with nitrogen gas flowing at the pressure of 3-4 PSIG.
(b) Replace the drier.
(c) Check for leaks using nitrogen gas (140 PSIG) and soap bubbles.
(d) Evacuate the system. Charge it with refrigerant. See the nameplate for required
refrigerant charge and type.
24) Replace the panels in their correct position.
25) Plug in the icemaker.
38
Auger
Spring
Retainer
Mechanical
Seal
O-ring
Bearing-
Lower
Coupling-
Spline
Gear Motor
39
Barrier
Cutter
Extruding Head
Socket Head
Cap Screw
Evaporator
Hexagon Socket
Cap Bolt with
Washer
7. Removal and Replacement of Fan Motor
1) Unplug the icemaker.
2) Remove the panels.
3) Remove the wire connectors from the fan motor leads.
4) Remove the fan motor bracket and fan motor.
5) Install the new fan motor.
6) Replace the fan motor bracket and the wire connectors.
7) Replace the panels in their correct position
8) Plug in the icemaker.
8. Removal and Replacement of Control Water Valve
1) Unplug the icemaker.
2) Remove the panels.
3) Close the water supply line shut-off valve.
4) Disconnect the terminal from the control water valve.
5) Loosen the fitting nut on the control water valve inlets, and remove the control water valve. Do not lose the packings inside the fitting nut.
6) Remove the water supply hose from the control water valve.
7) Install the new control water valve.
8) Assemble the removed parts in the reverse order of the above procedure.
9) Open the water supply line shut-off valve.
10) Check for water leaks.
11) Replace the panels in their correct position.
12) Plug in the icemaker.
40
VI. Cleaning and Maintenance
IMPORTANT
Ensure all components, fasteners and thumbscrews are securely in place after any maintenance or cleaning is done to the equipment.
1. Preparing the Icemaker for Long Storage
WARNING
When shutting off the icemaker for an extended time, drain out all water from the water line and remove the ice from the storage bin. The storage bin should be cleaned and dried. Drain the icemaker to prevent damage to the water supply line at sub-freezing temperatures, using air or carbon dioxide. Shut off the icemaker until the proper ambient temperature is resumed.
1) Run the icemaker with the water supply line shut-off valve closed.
2) Open the drain valve and blow out the water inlet line by using air pressure.
3) Turn off the power supply.
4) Remove the front panel.
5) Move the flush switch on the control box to the “FLUSH” position.
6) Turn on the power supply, and then drain out all water from the water line.
7) Turn off the power supply.
8) Turn off the power switch on the control box.
9) Replace the front panel in its correct position.
10) Close the drain valve.
11) Remove all ice from the storage bin, and
clean the bin.
41
2. Cleaning and Sanitizing Instructions
WARNING
1. HOSHIZAKI recommends cleaning this unit at least once a year. More frequent cleaning, however, may be required in some existing water conditions.
2. To prevent injury to individuals and damage to the icemaker, do not use
ammonia type cleaners.
3. Always wear liquid-proof gloves to prevent the cleaning and sanitizing solutions from coming into contact with skin.
[a] Cleaning Solution
Dilute 4.8 fl. oz. (142 ml) of recommended cleaner Hoshizaki “Scale Away” or
“LIME-A-WAY” (Economics Laboratory, Inc.) with 0.8 gallons (3 l) of warm water. This is a minimum amount. Make more solution if necessary.
IMPORTANT
For safety and maximum effectiveness, use the solution immediately after dilution.
[b] Cleaning Procedure
1) Remove the front panel and the top panel, then turn off the power supply.
2) Close the water supply line shut-off valve.
3) Remove all ice from the storage bin.
4) Move the flush switch to the “FLUSH” position.
5) Turn on the power supply and drain out all water from the water line.
6) Turn off the power supply.
Note: This unit is designed to start operating when the reservoir is filled with water.
7) In the storage bin, remove the thumbscrews attaching spout (B), then remove spout (B) and spout packing (B).
Thumbscrews
Spout (B)
Spout Packing (B)
Fig. 4
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8) Remove the thumbscrews attaching spout (A) to the evaporator assembly and lift off spout (A) and spout packing (A).
9) Pour the cleaning solution over the extruding head until the evaporator assembly and the reservoir are filled and the solution starts to overflow into the drain pan.
Note: If there is excess scale on the extruding head, fill the evaporator assembly and reservoir as described above, then use a clamp on the reservoir hose between the reservoir and evaporator assembly to block flow. Pour additional cleaning fluid over the extruding head until the evaporator assembly is completely full.
10) Using the thumbscrews, replace spouts (A) and (B) and spout packings (A) and (B) in their correct positions.
11) Allow the icemaker to sit for about 10 minutes before operation. If you placed a clamp on the reservoir hose in step 9, remove it before operation.
12) Move the flush switch to the “ICE” position, then turn on the power supply. Replace the top panel and the front panel in their correct positions. Make ice using the solution until the icemaker stops making ice.
13) Remove the front panel.
14) Move the flush switch to the “FLUSH” position to drain the remainder of the solution.
15) After the solution is drained, move the flush switch to the “ICE” position.
16) Replace the front panel in its correct position.
17) Open the water supply line shut-off valve, and supply water to the reservoir.
18) When the gear motor starts, remove the top panel and front panel. Turn off the power supply.
19) Drain out all water from the water line. See 4) through 6).
[c] Sanitizing Solution
Dilute 2.5 fl. oz. (74 ml or 5 tbs) of IMS-II Sanitizer or a 5.25% sodium hypochlorite solution
(chlorine bleach) with 5 gallons (19 l) of warm water.
IMPORTANT
For safety and maximum effectiveness, use the solution immediately after dilution.
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[d] Sanitizing Procedure - Initial
1) Close the water supply line shut-off valve.
2) In the storage bin, remove the thumbscrews attaching spout (B), then remove spout (B) and spout packing (B).
3) Remove the thumbscrews attaching spout (A) to the evaporator assembly and spout (A) and spout packing (A), and the cylinder packing.
lift off
4) Pour the sanitizing solution over the extruding head until the evaporator assembly and the reservoir are filled and the solution starts to overflow into the drain pan.
5) Remove the thumbscrews attaching the bin control assembly to the inside of the bin top panel.
Bracket
Thumbscrews
6) Remove the snap pin, shaft and actuator.
7) Remove the sliding door.
Snap Pin
Shaft
Actuator
8) Soak the removed parts in .25 gallons (1 l) of sanitizing solution for 10 minutes then wipe them down.
Fig. 5
9) Rinse the parts thoroughly.
IMPORTANT
If the solution is left on these parts, they will rust.
10) Replace all parts in their correct positions.
11) Move the flush switch to the “ICE” position, then turn on the power supply. Replace the top panel and the front panel in their correct positions. Make ice using the solution until the icemaker stops making ice.
[e] Sanitizing Procedure - Final
1) Remove the front panel and the top panel, then turn off the power supply.
2) Move the flush switch to the “FLUSH” position.
3) Turn on the power supply and drain out all water from the water line.
4) Turn off the power supply.
Note: This unit is designed to start operating when the reservoir is filled with water.
5) In the storage bin, remove the thumbscrews attaching spout (B), then remove spout (B) and spout packing (B).
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6) Remove the thumbscrews attaching spout (A) to the evaporator assembly and lift off spout
(A) and spout packing (A).
7) Pour the sanitizing solution over the extruding head until the evaporator assembly and the reservoir are filled and the solution starts to overflow into the drain pan.
8) Using the thumbscrews, replace spouts (A) and (B) and spout packings (A) and (B) in their correct positions.
9) Allow the icemaker to sit for about 10 minutes before operation.
10) Move the flush switch to the “ICE” position, then turn on the power supply. Replace the top panel and the front panel in their correct positions. Make ice using the solution until the icemaker stops making ice.
11) Remove the front panel.
12) Move the flush switch to the “FLUSH” position to drain the remainder of the solution.
13) After the solution is drained, move the flush switch to the “ICE” position.
14) Replace the front panel in its correct position.
15) Open the water supply line shut-off valve and supply water to the reservoir.
16) When the gear motor starts, remove the front panel and turn off the power supply.
17) Drain out all water from the water line. See 2) and 3).
18) Move the flush switch to the “ICE” position and run the icemaker.
19) Turn off the power supply after 30 minutes.
20) Pour warm water into the storage bin to melt all ice, then clean the bin liner with the solution.
21) Flush out any solution from the storage bin.
22) Turn on the power supply and start the automatic icemaking process.
IMPORTANT
1. After cleaning, do not use ice made from the sanitizing solution. Be careful not to leave any solution in the storage bin.
2. Follow carefully any instructions provided with the bottles of cleaning or sanitizing solution.
3. Never run the icemaker when the reservoir is empty.
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3. Maintenance Instructions
IMPORTANT
1. This icemaker must be maintained individually, referring to the instruction
manual and labels provided with the icemaker.
2. To have the optimum performance of this icemaker, the following
consumable parts need periodic inspection, maintenance and
replacement:
Extruding Head
Housing
Gear Motor
Auger
Mechanical Seal
These parts should be inspected at least once a year or every 10,000 hours of operation. Their service life, however, depends on water quality and environment. More frequent inspection and maintenance are recommended.
Consult with your local distributor about inspection and maintenance service.
To obtain the name and phone number of your local distributor, call Hoshizaki
Technical Support at 1-800-233-1940 in the USA.
1) Stainless Steel Exterior
To prevent corrosion, wipe the exterior occasionally with a clean and soft cloth. Use a damp cloth containing a neutral cleaner to wipe off oil or dirt build up.
2) Storage Bin and Scoop
• Wash your hands before removing ice. Use the plastic scoop provided (bin accessory).
• The storage bin is for ice use only. Do not store anything else in the bin.
• Keep the scoop clean. Clean using a neutral cleaner and rinse thoroughly.
• Clean the bin liner using a neutral cleaner. Rinse thoroughly after cleaning.
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3) Air Filter
A plastic mesh air filter removes dirt or dust from the air, and keeps the condenser from getting clogged. As the filter gets clogged, the icemaker’s performance will be reduced. Check the filter at least twice a month. When clogged, use warm water and a neutral cleaner to wash the filter.
4) Condenser
Check the condenser once a year, and clean if required by using a brush or vacuum cleaner. More frequent cleaning may be required depending on the location of the icemaker.
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