Turbo Air MST-28-12 Service Manual

Commercial
Refrigerator

Service Manual

Mega Top Prep Table

Model: MST-28-12

MST-48-18

MST-60-24
MST-72-30

TABLE OF CONTENTS

1. EXPLODED VIEW

1-1. MST-28-12 EXPLODED VIEW

1-2. MST-48-18 EXPLODED VIEW

1-3. MST-60-24 EXPLODED VIEW

1-4. MST-72-30 EXPLODED VIEW

2. WIRING DIAGRAMS

2-1. MST-28-12 / MST-48-18

2-2. MST-60-24 / MST-72-30

3. MAIN COMPONENTS

4. TEMPERATURE CONTROL INSTRUCTION

5. PARTS LIST

6. REPLACEMENT OF MAIN COMPONENTS

6-1. REPLACING DOOR

6-2. REFRIGERATION COMPARTMENT PARTS

6-3. COMPRESSOR COMPARTMENT PARTS

6-4. REPLACING THE EVAPORATOR & EVAPORATOR FAN MOTOR

1. EXPLODED VIEW

1-1. MST-28-12 EXPLODED VIEW

9

10

11

12

7

8

6

13

◎ Part Name

17

14

15

19

18

21

22

23 24

20

16

5

4

3

2

1

SHELF

11121

CABINET ASSEMBLY

2 12 LOUVE 22 EVAPORATOR DUCT

CONDENSER ASSEMBLY

3 13 PAN DUCT SIDE(LF) 23 PAN DUCT FRONT

COMPRESSOR CASTER

4 14 PAN DUCT MID 24

MECH COVER PAN DUCT SIDE(RH)

515

6 HOOD 16

7 HOOD LID 17

COUNTER TOP TOP HINGE

818

BRACKET BOARD KITCHEN

919

BOARD KITCHEN BOTTOM HINGE

10 20

EVAPORATOR FAN DUCT TAMPERATURE CONTROL COVER

EVAPORATOR ASSEMBLY

EVAPORATOR DRAIN GUI

DOOR ASSEMBLY

1-2. MST-48-18 EXPLODED VIEW

10

11

12

13

16

17

9

6

5

15

14

4

78

18

19

20

21

22

23

24

27

26

25

29

28

◎ Part Name

SHELF LOUVER

11325

2 14 EVAPORATOR 26

CONDENSER ASSEMBLY EVAPORATOR DUCT

3 15 EVAP DRAIN GUIDE 27

MECH COVER(RH)

416

UNIT COVER CABINET ASSEMBLY

517

MECH COVER(LF)

618

HOOD

7 19 PAN DUCT FRONT

HOOD LID

8 20 TOP HINGE(LF)

COUNTER TOP ASSEMBLY

9 21 DOOR ASSEMBLY(LF)

BRACKET BOARD KITCHEN

10 22

BOARD KITCHEN

11 23

EVAPORATOR FAN DUCT

12 24

PAN DUCT SIDE(LF)

PAN DUCT MID

PAN DUCT SIDE(RH)

BOTTOM HINGE(LF)

DOOR ASSEMBLY(RH)

TOP HINGE(RH)

BOTTOM HINGE(RH)

TAMPERATURE CONTROL COVERCOMPRESSOR

CASTER

28

29

3

2

1

1-3. MST-60-24 EXPLODED VIEW

9

16

17

14

15

18

19

20

21

22

23

24

25

26

13

12

11

10

2

8

7

6

5

4

3

1

28

30

2927

◎ Part Name

SHELF EVAPORATOR

11427

CABINET ASSEMBLY EVAP DRAIN GUIDE TAMPERATURE CONTROL COVER

21528

COMPRESSOR EVAPORATOR DUCTEVAP FAN DUCT

31629

CONDENSER ASSEMBLY

41730

HOOD LID

518

BRACKET BOARD KITCHEN

619

HOOD

720

COUNTER TOP ASSEMBLY

821

HOOD

922

BOARD KITCHEN DOOR ASSEMBLY(LF)

10 23

MECH COVER(RH)

11 24

UNIT COVER

12 25

MECH COVER(LF)

13 26

LOUVER

PAN DUCT SIDE(LF)

PAN DUCT MID

PAN DUCT SIDE(RH)

PAN DUCT FRONT

TOP HINGE(LF)

BOTTOM HINGE(LF)

DOOR ASSEMBLY(RH)

TOP HINGE(RH)

BOTTOM HINGE(RH)

CASTER

1-4.MST-72-30 EXPLODED VIEW

12

13

19

10

11

9

8

14

15

16

20

21

22

23

24

25

26

27

28

3130

29

17

18

7

6

5

4

3

2

1

32

◎ Part Name

SHELF EVAP DRIAN GUIDE DOOR ASSEMBLY(RH)

11427

CABINET ASSEMBLY

21528

COMPRESSOR

3 16 MECH COVER(LF) 29

CONDENSER ASSEMBLY

41730

5 HOOD LID(RH) 18 MECH COVER(RH) 31

6 BRACKET BOARD KITCHEN 19

7 BRACKET BOARD 20

8 HOOD(RH) 21

9 COUNTER TOP ASSEMBLY 22

10 HOOD(LF) 23

HOOD LID(LF) DOOR ASSEMBLY(LF)

11 24

EVAPORATOR FAN DUCT BOTTOM HINGE(LF)

12 25

LOUVER DOOR ASSEMBLY(MID)

13 26

EVAPORATOR TOP HINGE(RH)

BOTTOM HINGE(RH)

UNIT COVER

TAMPERATURE CONTROL COVER

EVAPORATOR DUCT

PAN DUCT SIDE(LF)

PAN DUCT MID

PAN DUCT SIDE(RH)

32

CASTER

PAN DUCT FRONT

TOP HINGE(LF)

2. WIRING DIAGRAMS

2-1. MST-28-12 / MST-48-18

2-2. MST-60-24 / MST-72-30

3.MAIN COMPONENTS

E

E

1.COMPRESSOR

MODEL PART NAME
MST-28-12
MST-48-18
MST-60-24

MST-72-30

HBL-27YE-1
SK1A1C-L2W
CAE4456Y
CAE4456Y

PART NO.

M369700100
M609700100
M729700100

M729700100

ORS

1/4HP
1/3HP 115V 60Hz
1/2HP 115V 60Hz
1/2HP

CAPACITY

2.COMPRESSOR RELAY ,OVERLOAD

MODEL RELAY OVERLOAD
MST-28-12 GSR SO68 E03 03 783RHBZZ-52
MST-48-18

MST-72-30

J531Q34E220M3503 795TFBZZ-53

3ARR12 MST16AGZ-3240D5AP

3ARR12

MST16AGZ-3240D5AP

3.COMPRESSOR CAPACITOR

MODEL
MST-28-12
MST-48-18
MST-60-24
MST-72-30

STARTING PART NO.

200V/100uF ~
125V/125uF ~
160V/315uF
160V/315uF ~

~

RUNNING

230V/10uF
250V/12uF

~
~

PART NO.

INPUT

~
~
~
~

~
~
~

~

CSIR 115V 60Hz
CSIR
CSIR
CSIR

MAKER

DAEWOO ~

SAMSUNG ~

TECUMSHEMST-60-24

TECUMSHE

MAKER

115V 60Hz

~~
~
~~
~

MAKERTYPE OF

DAEWOO

SAMSUNG
TECUMSHE
TECUMSHE

NOTE

~

~

NOTE

~

~

4.CONDENSER FAN MOTOR

MODEL
MST-28-12
MST-48-18
MST-60-24
MST-72-30

PART NAME

IS-4420DWSN-2A

IS-4420DWSN-2A
IS-4420DWSN-2A
IS-4420DWSN-2A

3963328120
3963328120
3963328120
3963328120

5.EVAPORATOR FAN MOTOR

MODEL
MST-28-12

MST-48-18
MST-60-24
MST-72-30

PART NAME POLE

DAI-6202DEUA
DAI-6202DEUA
DAI-6202DEUA
DAI-6202DEUA

M729900200

6.THERMOSTAT

THERMOSTAT

PART NO.

PART NO.

30283L0100

INPUT

115V 60Hz

INPUT

2P
2P
2P

2P

MST-48-18,MST-60-24,MST-72-30

115v60Hz
115v60Hz
115v60Hz
115v60Hz

K55Q-5607,16A

MST-28-12

TYPE

HADED POL

INDUCTION

TYPE

SHADED

POLE

INDUCTION

BLADE

AL 5 SUNGSHIN

BLADE

(NUMBER)

ZYTEL

MAKERRATINGPART NO.PART NAME

RANCO

MAKER

4

SUNGSHIN

NO

4.TEMPERATURE CONTROL INSTRUCTION

- Temperature can be controlled by the user.

- Factory setting is at "NORMAL" Settings can be changed by Dial Knob.

◎ Indicates temperature level

R

5. PARTS LIST

Part Code

DescriptionPart Name

28 48 60 72

Model

1. DOOR

DOOR ASSEMBLY (L)

DOOR ASSEMBLY (L)

DOOR ASSEMBLY (M) 1

DOOR ASSEMBLY (R)

DOOR ASSEMBLY (R) 1

DOOR ASSEMBLY (R) 1 1

DOOR BUSHING

DOOR GASKET

DOOR GASKET 2

DOOR GASKET 2 3

TOP HINGE ( R ) 1112

TOP HINGE ( L ) 1 1 1

TOP HINGE SPACER 1223

BOTTOM HINGE (U)(R)

BOTTOM HINGE (U)(L)

SPRING BAR

WM61700200

WM71700200

WM71700300

WM20000900

WM61700100

WM71700100

M720700100
M272300100
M602300100
M722300100
M722900100
M722900200
M725000100
30229M0400
30229M0300

PA-66

PVC

SUS304,SM45C

SUS304,SM45C

1

2446

1

1112

1223

1

11

111

2. COUNTER TOP

COUNTER TOP ASSEMBLY

COUNTER TOP ASSEMBLY

COUNTER TOP ASSEMBLY

COUNTER TOP ASSEMBLY

CASTER M726500100

CASTER

M275700200

M485700200

D605700200

D725700200

M726500200

1

1

1

1

2222

2222

3. COMPRESSOR COMPA

COMPRESSOR

COMPRESSOR

COMPRESSOR

SUCTION PIPE(B)

SUCTION PIPE(B)

SUCTION PIPE(B)

SUCTION PIPE(A)

SUCTION PIPE(A)

SUCTION PIPE(A)

SUCTION PIPE(A) M724400100 CU

BRACKET MOTOR 30220T0300

FAN COOLING BLADE

M369700100

M609700100

M729700100

M364400200

M604400200

M604400800

M724400200SUCTION PIPE(B)

M274400100 CU

M604400900

M604400400

M270300100COMP BASE

3011802210 ZYTEL

30211M0100PAN

CU

CU

CU

CU

CU

GI

SUS304

PC

1

1

11

1

1

1

1

1

1

1

1

1

2223

1111

12 18 24 30

Remark

DescriptionPart CodePart Name

COMP BASE

COMP BASE

COMP BASE

CONDENSER FAN MOTOR

POWER CORD

CONDENSER FAN AIR GUIDE

DRAIN PAN

DRAIN PAN M729300100

DRAIN PIPE 1

DRAIN PIPE 11

CONDENSER MOTOR BRACK 1112

CONDENSER FAN BLADE M729800100

M600300100

M720300100

3963328120

M721300100

M722500900

30211A0200

M484400100

M724400800

3020602200

GI

GIM600300300

GI

IS-4420DWSN-2A

KKP-30(9.85FT)

GI

PP

PP

AL

Model

28 48 60 72

1

1

1

1112

1111

1

1

111

1112

Remark

Part Name Part Code

Description

Model

28 48 60 72

4. REFRIGERATION COMPARTMENT

PAN SUPPORT ASS'Y M270001200

PAN SUPPORT ASS'Y 1

PAN SUPPORT ASS'Y 1

PAN SUPPORT ASS'Y 1

EVAP FAN MOTOR 2223

KITCHEN BOARD

KITCHEN BOARD 1

KITCHEN BOARD 1

KITCHEN BOARD 1

PAN DUCT MID 1

PAN DUCT MID 11

PAN DUCT MID

PAN DUCT SIDE(L)

PAN DUCT SIDE(L)

PAN DUCT SIDE(L)

PAN DUCT SIDE(R)

PAN DUCT SIDE(R)

PAN DUCT SIDE(R)

PAN DUCT FRONT

PAN DUCT FRONT

PAN DUCT FRONT

M480001100

M600001300

M720002500

M729900200

M279400100

M489400100

M609400100

M729400100

M276900500

M606900500

M726900500

M276900100

M486900100

M276900400

M486900400

M726900400

M276900600

M486900600

M606900600

SUS304-2B

MIPS

SUS304-2B

SUS304-2B

SUS304-2B

SUS304-2BM726900100

SUS304-2B

SUS304-2B

SUS304-2B

SUS304-2B

SUS304-2B

SUS304-2B

1

1

1

1

1

11

1

1

11

1

1

1

Remark

Part Name Part Code

M726900600PAN DUCT FRONT

LOUVER

LOUVER

LOUVER

LOUVER

SHELF

SHELF

SHELF

SHELF MID

FIXTURE SHELF CLIP

SHELF MID BRACKET M720600100

SHELF STANDARD

DRAIN PAN GUIDE(R)

DRAIN PAN GUIDE(L)

EVAPORATOR AS

EVAPORATOR AS

EVAPORATOR AS

EVAPORATOR AS

THERMOSTAT

EVAPOVATOR FAN DUCT

EVAPOVATOR FAN DUCT

EVAPOVATOR FAN DUCT

EVAPOVATOR FAN DUCT

EVAPOVATOR DUCT

EVAPOVATOR DUCT 1

EVAPOVATOR DUCT 1

EVAPOVATOR DUCT 1

FIXTURE EVAP DUCT BRACKET 2222

HOOD LID

HOOD LID 1

HOOD LID 21

HOOD LID 1

MULLION FRAME 112

MULLION BACK FRAME 112

MULLION FRAME INSULATION 1 1 2

CONDENSER AS 1

CONDENSER AS 1

CONDENSER AS 11

HOOD SHAFT SPACER 2244

HOOD HINGE 2244

BRACKET BOARD KITCHEN(L) 1111

PAN GUIDE

M275800100

M485800100

M605800100

M725800100

M607800100

M727800100

M277800100

M727800300

30220L0900

M725300200

M272500100

M272500200

M367000100

M487000200

M607000100

M727000100

30283L0100

M276900200

M486900200

M606900200

M726900200

M276900300

M486900300

M606900300

M726900300

M720601000

WM28900100

WM48900300

WD68900300

WD78900300

M722200400

M722200200

M723300100

M365900100

M605900100

M725900100

M725000400

M724900100

M720601301

30206P1902BRACKET BOARD KITCHEN(R)

M722500100

Description

SUS304-2B

SUS439-2B

SUS439-2B

SUS439-2B

SUS439-2B

STS304

STS304

STS304

STS304

PA-66

SUS304

SUS304

GI

GI

CU,SPG,AL

CU,SPG,AL

CU,SPG,AL

CU,SPG,AL

250V,16A K55Q -5607

SUS439-2B

SUS439-2B

SUS439-2B

SUS439-2B

SUS439-2B

SUS439-#4

SUS304

SUS304

28 48 60 72

1

1

48812

48812

1

1

1

1111

1

1

1

1111

3579

Model

1

1

1

1

2

22

1

112

1

1

1

1

1

1

Remark

6. REPLACEMENT OF MAIN COMPONENTS

6-1. REPLACING DOOR

A. Unscrew the top hinge B. Lift the door

6-2. REFRIGERATION COMPARTMENT PARTS

A.Disassemble the evaporator fan duct assembly

B.Disassemble the evaporator duct

C.Remove the tamperature & sensor

6-3. COMPRESSOR COMPARTMENT PARTS

A.Disassembly the rear grill

B.Disassembly the condesing unit

6-4. REPLACING THE EVAPORATOR & EVAPORATOR FAN MOTOR

A.Remove the evaporator coil B.Remove the evaporator fan motor