Hoshizaki RF28A User manual

Hoshizaki
“A Superior Degree
of Reliability”
www.hoshizaki.com
Model
RF28A
Commercial Refrigerators & Freezers
Hoshizaki America, Inc.
Number: 71257
Issued: 9-8-2006
PARTS LIST

2
CONTENTS
Auxiliary Codes ...................................................................................................................... 3
Note About Ordering Parts .................................................................................................... 3
Material Abbreviations ........................................................................................................... 4
A. Reach-In ............................................................................................................................ 5
B. Refrigeration Assembly ..................................................................................................... 8
C. Air Duct Assembly ........................................................................................................... 12
D. Control Box Assembly ..................................................................................................... 13
E. Regulator Box Assembly ................................................................................................. 15
F. Front Panel Assembly ...................................................................................................... 16
G. Door (R) Assembly .......................................................................................................... 17
H. Drain Tank ..................................................................................................................... 18
J. Label Location .................................................................................................................. 19
K. Condenser Fan Motor Assembly ..................................................................................... 20
L. Accessories/Packaging .................................................................................................... 21

3
Auxiliary Codes
RF28A R-5 June 2006
Note About Ordering Parts
Most assemblies cannot be ordered as complete units; parts in the assemblies generally
must be ordered separately.

4
Material Abbreviations
ALUMINUM
AL = Aluminum
COPPER
CU = Copper
PLASTIC
ABS = Acrylonitrile -butadiene - styrene
AC = Polyacetal
EVA = Ethylene vinyl acetate
PA = Polyamide = Nylon
PC = Polycarbonate
PE = Polyethylene
PES = Polyester
PETP = Polyethylene terephthalate = Tetlon
PP = Polypropylene
PS = Polystyrene
PTFE = Polytetrafluoroethylene = Teflon
PUR = Polyurethane
PVC = Polyvinyl chloride
RUBBER
VN = Vinyl Nitrile
EPDM = EP rubber
NBR = Nitrile butadiene rubber
NR = Natural rubber
NP = Neoprene
SI.R = Silicone rubber
SY.R = Synthetic rubber
EPH = Epichlorohydrin
STEEL
GS = Galvanized steel
SS = Stainless steel
PS = Plated steel
PAS = Primed steel
AUXILIARY CODE
K-5
Designates the year. "K" indicates the year 2000. Years progress or regress in alphabetical order.
"J" is 1999, "L" is 2001, "M" is 2002, and so on. The letters "I" and "O" were skipped.
Designates significant part changes within the same year for this model. Base is 5 and this number
advances for each change.
Example: P-6
"P" indicates 2004.
"6" indicates the first significant part change for 2004.

5
A. Reach-In
RF28A
R-5
D1
D
E
F
8
44a
6a
6
10
33
32
2
J
CC1
G
11
5a
55b
77a
10a
99a
12 13 13a
14
25
17
21
24
27
16 34 34a 29
28
3
15
30
E1
BB1
14a
15a
20 20a 25a
18 19
18a
27a
29a
31
23 23a
24a
32a
26 26a 26b
22 22a 19
HH1 H2
11a 1b

6
Title: A. Reach-In Model: RF28A
Index
No. Description
Material or
Model Number Part Number
Required Number
R-5
B Refrigeration Assembly - 1A0993A01 1
B1 Truss Head Screw 5×10 7C31-0510 4
C Air Duct Assembly Evap. Fans 2A3287A01 1
C1 Truss Head Screw 4×8 SS 7C32-0408 2
D Control Box Assembly - 2A3273A02 1
D1 Truss Head Screw 4x8 7C31-0408 2
E Regulator Box Assembly - 3A3314A01 1
E1 Truss Head Screw 5x10 7C31-0510 2
F Front Panel Assembly - 3A3317G01 1
G Door (R) Assembly - 2A3278A01 1
H Drain Tank - 2A3505A01 1
H1 Truss Head Screw 5x10 SS 7C32-0510 2
H2 Tapping Screw - 456789-01 2
J Label Location - 1A0995A01 1
1 Body - 1A0989G01 1
1a Truss Head Screw 5x10 SS 7C32-0510 6
1b Truss Head Screw 4x8 SS 7C32-0408 2
2 Power Supply Cord - 4A0520-01 1
3 Wire Saddle - 428060-01 2
4 Door Hinge R, Upper - 3A3531G01 1
4a Flange Bolt 5x12 SS 445994-03 3
5 Door Hinge R, Lower - 360214G01 1
5a Hinge Collar/Hinge - 339948-01 1
5b Flange Bolt 5x12 SS 445994-03 3
6 Grip A - 339961-01 2
6a Flange Bolt 5×12 SS 445994-03 6
7 Grip B - 339961-02 2
7a Flange Bolt 5×12 SS 445994-03 6
8 Strike No. 83 435995-01 2
9 Side Panel (L) SS 2A3283G02 1
9a FT Screw 4×8 ZN 7F31-0408 1
10 Side Panel (R) SS 2A3283G01 1
10a FT Screw 4×8 ZN 7F31-0408 1
11 Lampholder - 4A2862-01 1
12 Bulb - Light 40A15/CL/
Proline
4A2420-01 1
13 Shield-Light - 4A0465-01 1
13a Cheese Head Screw 5×12 SS 7C52-0512 2
14 Pilaster SS 3A0145-01 4
14a Truss Head Screw 5×10 SS 7C32-0510 12
15 Back Guard SS 3A3319-01 1
15a Truss Head Screw 5×10 SS 7C32-0510 3
16 Reed Switch - 453861-02 1
17 Gasket-Base - 239644-02 1

7
Title: A. Reach-In Model: RF28A
Index
No. Description
Material or
Model Number Part Number
Required Number
R-5
18 Cover Condenser Side GS 2A3290-01 1
18a Truss Head Screw 4×8 7C31-0408 2
19 Bushing OCB-625 428394-03 2
20 Unit Cover L GS 3A3486-01 1
20a Truss Head Screw 4×8 7C31-0408 2
21 Pipe-Drain Tank - 3A3753-01 1
22 Rear Cover SS 2A3291-01 1
22a FT Screw 4×8 7F31-0408 4
23 Duct-Drain Tank - 3A3543G01 1
23a Truss Head Screw 4x8 SS 7C32-0408 2
24 Duct-Drain Tank C SS 3A3548-01 1
24a Truss Head Screw 4x8 SS 7C32-0408 2
25 Cover-Drain Tank SS 3A3544-01 1
25a Truss Head Screw 4×8 SS 7C32-0408 4
26 Top Cover GS 2A3292-01 1
26a FT Screw 4×8 7F31-0408 2
26b Truss Head Screw 4x8 7C31-0408 1
27 Bracket Lock-Body SS 4A3799-01 1
27a Truss Head Screw 4×8 SS 7C32-0408 2
28 Screw - Grounding - 433304-02 2
29 Cover Switch - Body - 3A3534-01 1
29a Truss Head Screw 4×8 7C31-0408 2
30 Regulator Box Cover GS 3A3315-01 1
31 Clamp - 427902-05 1
32 Bracket-Cord GS 4A3798-01 1
32a Truss Head Screw 4x8 7C31-0408 2
33 Bushing CEE SR-6P30 450414-01 1
34 Spacer Switch Body - 4A3797-01 1
34a Pan Head Screw (w/lock & flat
washers) 3×12
SS
7C1230312 2

8
27 37
B. Refrigeration Assembly
1/2
RF28A
R-5
1
2a
22b
7a
3
6
4 5
10 10a 9
7
8
21
17
18
20
16
12
22
19
21a
23
26
K
38
8a
34
K1 K2
36
38a
23
23
35
39

9
B. Refrigeration Assembly
2/2
RF28A
R-5
13
14
11
15 32 33
28 28a
14a
11a
25
24 25a 30 31
29

10
Title: B. Refrigeration Assembly Model: RF28A
Index
No. Description
Material or
Model Number Part Number
Required Number
R-5
K Condenser Fan Motor Assy. - 3A3320A01 1
K1 Flange Bolt 5X12 SS 445994-03 2
K2 Tapping Screw - 456789-01 2
1 Base - 1A0994G01 1
2 Compressor SC12CLX.2 4A3808-01 1
2a Rubber Grommet 118-3661 4A1452-01 4
2b Bolt - 468180-01 4
3 Start Capacitor 117U5023 4A2134-03 1
4 Start Relay 117U6020 4A3113-01 1
5 Relief Assembly 103N1004 4A1454-01 1
6 Cover - Electrical 103N2008 4A3112-01 1
7 Condenser - 242703-02 1
7a Flange Bolt 5×12 SS 445994-03 2
8 Cover-Condenser GS 3A3520-01 1
8a Tapping Screw - 456789-01 2
9 Drier C-03E126 4A2666-01 1
10 Drier Bracket GS 4A0807-01 1
10a Tapping Screw - 456789-01 2
11 Evaporator - 242706-01 1
11a T2 Screw 4×12 SS 7P32-0412 4
12 Cover-Evaporator SS 3A3522-01 1
13 Defrost Heater - 2A3286-01 1
14 Support G-Heater - 3A3521G01 1
14a T2 Screw 4×12 SS 7P32-0412 2
15 Heat Exchanger - 2A3494G01 1
16 Copper Tube (A-H) (includes
pressure switch, item 37)
- 3A3322G01 1
17 Copper Tube (B-H) - 4A3634G01 1
18 Copper Tube (C-H) - 4A3945-01 1
19 Copper Tube (L) (includes ac-
cess valve, item 36)
- 3A3323G01 1
20 Insulation Tube L=150
(1A0993-23)
7762-1020 3
21 Handle - 312719-01 2
21a Flange Bolt 5×12 SS 445994-03 4
22 Clamp No. 248 427902-04 4
23 Clamp No. 4253 427902-05 3
24 Thermal Fuse MM9-113 433262-02 1
25 Fuse Holder SS 4A3810-01 1
25a T2 Screw 4x12 SS 7P32-0412 1
26 Air Filter - 355229G01 1
27 Cushion-Bushing - 457429-01 1
28 Thermostat - Defrost 37T21 4A0954-02 1
28a T2 Screw 4×12 SS 7P32-0412 1

11
Title: B. Refrigeration Assembly Model: RF28A
Index
No. Description
Material or
Model Number Part Number
Required Number
R-5
29 Bushing OCB-625 428394-03 1
30 Thermistor-Interior Konai 4R2691-01 1
31 Thermistor Bracket Interior 456019-01 1
32 Thermistor-Defrost - 4R2690-01 1
33 Thermistor Holder Defrost 321606-01 1
34 Thermistor Clogged Filter - 4R2692-01 1
35 Thermistor Holder Clogged Filter 458132-01 1
36 Access Valve (included in item
19, Copper Tube (L))
- 457729-01 1
37 Pressure Switch: (included in
item 16, Copper Tube (A-H))
ACB-1UB30 463180-03 1
38 Bracket-Pressure Switch - 457430-01 1
38a Tapping Screw - 456789-01 1
39 Insulation Tube - 7762-2943 1

12
C. Air Duct Assembly
RF28A
R-5
Title: C. Air Duct Assembly Model: RF28A
Index
No. Description
Material or
Model Number Part Number
Required Number
R-5
1 Air Duct F Includes air
duct heater
2A3477G01 1
2 Fan Motor C D1350X12
CXXZ-18
469067G01 2
2a Truss Head Screw 4×30 SS 7C32-0430 4
3 Fan Cover - 242785-01 2
3a Truss Head Screw 4×12 SS 7C32-0412 2
4 Gasket-Drain Elbow X - 469086-02 1
5 Clamp No. 248 427902-04 1
6 Insulation Tubing 1/2×3/16 L=60
(2A3287-08)
7762-1323 1
3a
3
6
4
5
2a
2
1

13
  

   
1
9
4
5
6
13
3a
3
7
8
D. Control Box Assembly
RF28A
R-5
10
11
12
14
16
17
18
19
15
22a
6a
7a
8a
9a
5a
10a
13a
11a
12a

14
Title: D. Control Box Assembly Model: RF28A
Index
No. Description
Material or
Model Number Part Number
Required Number
R-5
1 Control Box G GS 3A3751G01 1
2 Cover-Control Box G - 3A3749G01 1
2a T2 Screw 4×8 SS 7P32-0408 1
3 Control Board - 3A2786-03 1
3a T2 Screw 4×8 SS 7P32-0408 4
4 Switch - Rocker WB242D1123 4A3645-01 1
5 Transformer 26D285H 3A0172-01 1
5a Tapping Screw 3×8 431415-01 2
6 Relay X1, Compressor 1 G2R-IA-T
DC12V
430173-05 1
6a Tapping Screw 3×8 431415-01 2
7 Relay X2, Evaporator Fans G2R-IA-T
DC12V
430173-05 1
7a Tapping Screw 3×8 431415-01 2
8 Relay X3, Defrost Heater LY2F , DC 12V 406132-09 1
8a Tapping Screw 3×8 431415-01 2
9 Relay X4, Compressor 2 G7l-IA-TUB 449000-01 1
9a Tapping Screw 3×8 431415-01 2
10 Relay X5, Drain Tank Heater LY2F-
AC110/120
406132-07 1
10a Tapping Screw 3×8 431415-01 2
11 Relay X6, Door/Lamp LY2F-
AC110/120
406132-07 1
11a Tapping Screw 3×8 431415-01 2
12 Relay X7, Pressure Switch LY2F-
AC110/120
406132-07 1
12a Tapping Screw 3×8 431415-01 2
13 Relay X8, Air Duct Heater LY2F-
AC110/120
406132-07 1
13a Tapping Screw 3×8 431415-01 2
14 Operation Label - 243398-01 1
15 Bushing - 451171-01 1
16 2 Plug Housing 03-12-2025 4A0425-02 1
17 12 Plug Housing 3191-12P 412832-04 1
18 9 Plug Housing 3191-09P 412832-02 1
19 2 Plug Housing 3191-02P 412832-07 1

15
E. Regulator Box Assembly
RF28A
R-5
Title: E. Regulator Box Assembly Model: RF28A
Index
No. Description
Material or
Model Number Part Number
Required Number
R-5
1 Regulator Box Base GS 2A3277-01 1
1a Truss Head Screw 4×8 ZN 7C31-0408 1
2 Board Support 2451 449969-01 4
3 Switching Regulator LCA50S-12-
XHSZ
458914-01 1
3
1 1a
2

16
F. Front Panel Assembly
RF28A
R-5
Title: F. Front Panel Assembly Model: RF28A
Index
No. Description
Material or
Model Number Part Number
Required Number
R-5
1 Front Panel SS 2A3282-01 1
2 Catch - 435994-01 2
3 Hook/Front Panel - 448859-01 2
4 Emblem - 4A0560-01 1
5 Label - Display F - 2A3905-02 1
6 Label-Penguin (L) - 456246-02 1
7 Wiring Label - 2A3276-01 1
1
7
2
3
6
5
4
2

17
G. Door (R) Assembly
RF28A
R-5
Title: G. Door (R) Assembly Model: RF28A
Index
No. Description
Material or
Model Number Part Number
Required Number
R-5
1 Door - 2A3279G01 1
2 Gasket-Door - 2A3437-01 1
3 Door Stopper - 360222-01 2
3a Countersunk Screw 5x12 SS 4A2894-02 4
4 Handle - 115365-01 1
4a Screw/Bolt 5×16 SS 449879-08 2
5 Cap/Handle - 360643-01 2
6 Magnet - 440805-01 1
7 Switch Cover - 3A3508-01 1
7a Truss Head Screw 4×12 SS 7C32-0412 2
8 Lock Tumbler (With Key) 4A0462-01 1
9 Lock-Stop Washer - 4A0458-01 1
10 Lock-Plate - 4A3782-01 1
11 Lock-Washer - 4A0459-01 1
12 Lock-Screw (Refrig) - 4A0461-01 1
13 Hinge Collar/Door - 339947-01 2
14 Cover-Bracket - 4A3817-01 1
14a Truss Head Screw 4×12 SS 7C32-0412 2
15 Cap - 455295-01 2
8
14a
1
2
3a
3
4
5
6
7a
7
4a
9
10
11 12
13
14
15
3a
3

18
Title: H. Drain Tank Model: RF28A
Index
No. Description
Material or
Model Number Part Number
Required Number
R-5
1 Drain Tank A - 3A3549G01 1
2 Sheathed Heater - 3A3327-01 1
3 Flange-Drain Tank SS 3A3547-01 1
4 Thermostat 37TJ21 4A3941-01 1
4a Truss Head Screw 4×8 SS 7C32-0408 2
5 Fuse Holder SS 4A3810-01 1
5a Truss Head Screw 4×8 SS 7C32-0408 1
6 Thermal Fuse MM9-113 433262-02 1
7 Thermostat - 426395-01 1
8 Thermostat Bracket GS 4A3811-01 1
8a See H2 in A. Reach-In for
screws securing thermostat
bracket to body frame
- - -
9 Heater Holder - 4A3813-01 1
10 Set-Thermostat - 467369-01 1
10a Truss Head Screw 4×6 7C31-0406 2
11 Bushing - 407818-01 1
12 Bracket-Drain Tank Heater SS 4A3809-01 1
12a Truss Head Screw 4×8 SS 7C32-0408 1
H. Drain Tank
RF28A
R-5
12
11
10 10a
9
7
1
2
3
4
5
6
8
5a
4a
12a
8a

19
J. Label Location
RF28A
R-5
Title: J. Label Location Model: RF28A
Index
No. Description
Material or
Model Number Part Number
Required Number
R-5
1 Nameplate - 3A3324-01 1
2 Label - R404A - 4A0960-01 1
3 Label - Air Filter - 426177-01 1
4 Caution Label - 4A1931-01 1
5 Label-Ground (B) - 450452-02 2
6 Cover-Nameplate - 4A3727-01 1
1
2
3
46
5

20
K. Condenser Fan Motor Assembly
RF28A
R-5
Title: K. Condenser Fan Motor Assembly Model: RF28A
Index
No. Description
Material or
Model Number Part Number
Required Number
R-5
1 Bracket (G) - Fan Motor - 3A3321G01 1
2 Motor-Cond Fan includes 3
mounting bolts
4A0408-01 1
3 Fan Blade - 3A0608-01 1
3a Hex Nut #S-25467 4A1345-01 1
4 Bushing SB-625-8 420470-01 1
4
3a3
1
2