Turboair MUF-48 User manual

M3 Series Prep Table
Under Counter Freezer Series
Model No: MUF-48
MUF-28
Commercial
Freezer
Service Manual

TABLE OF CONTENTS
1.FEATURE CHART
1-1.FRONT VIEW
1-2.SIDE VIEW
2.WIRING DIAGRAMS
2-1.MUF-48
2-2.MUF-28
3.PART DETAILS
3-1.COMPRESSOR COMPARTMENT
3-2.DOOR
3-3.REFRIGERATION COMPARTMENT
4.MAIN COMPONENTS
5.TEMPERATURE CONTROL INSTRUCTION
5-1.HOW TO USE THE TEMPERATURE CONTROL
5-2.FUNCTION TABLE
6.PARTS LIST
7.REPLACEMENT OF MAIN COMPONENTS
7-1.REPLACING DOOR
7-2.REFRIGERATION COMPARTMENT PARTS
7-3.COMPRESSOR COMPARTMENT PARTS
7-4.REPLACING THE EVAPORATOR & EVAPORATOR FAN MOTOR

1.FEATURE CHART
1-1.FRONT VIEW
MUF-48 MUF-28
1-2.SIDE VIEW
1 COUNTER TOP
2 DOOR(L)
3 DOOR HANDLE(L)
4 EVAPORATOR DUCT
5 LOUVER
6 MULLION
7 SHELF( R )
8 CABINET ASSEMBLY
9 DOOR GASKET
10 SHELF CLIP
11 TOP HINGE
12 EVAPORATOR FAN MOTOR
13 EVAPORATOR COIL
14 EVAPORATOR DRAIN GUIDE
15 DOOR BOTTOM HINGE
16 CASTOR

2.WIRRING DIAGRAMS
2-1.MUF-48
2-2.MUF-28

3.PART DETAILS
3-1. COMPRESSOR COMPARTMENT
MUF-48 MUF-28
CONDENSER UNIT ASSEMBLY
3-2. DOOR
DOOR GASKET
3-3.REFRIGERATION COMPARTMENT
TEMPERATURE CONTROL & EVAPORATOR ,THEMOSTAT

PART DETAILS
EVAPORATOR FAN MOTOR

4.MAIN COMPONENTS
1.COMPRESSOR PART NAME PART NO. HORSE CAPACITY TYPE OF INPUT
CAE2420Z G2F5700100 1/3HP ~ CSR 115V 60Hz
HBL-27YE-1 M369700100 1/4HP ~ CSR 110-115V 60Hz
2.COMPRESSOR RELAY ,OVERLOAD
RELAY PART NO. OVERLOAD PART NO. MAKER
3ARR12 ~ MST16AHN-3240 ~ TECUMSHE
GSR SO68 E03 03 ~ 783RHBZZ-52 ~ DAEWOO
3.COMPRESSOR CAPACITOR
STARTING PART NO. RUNNING PART NO. MAKER
250V/160uF ~ ~ ~
125V/100uF ~ 250V/10uF ~ ~
4.CONDENSER FAN MOTOR
PART NAME PART NO. POLE INPUT TYPE BLADE
IS-4420DWSN-2A 3963328120
IS-4420DWSN-2A 3963328120
5.EVAPORATOR FAN MOTOR
BLADE
(NUMBER)
DAI-6202DEUA 2P 115v 60Hz
DAI-6202DEUA 2P 115v 60Hz
6.THERMOSTAT
PART NO.
MODEL
MUF-48
MUF-28
MODEL
MUF-48 ~
MUF-28 ~
MODEL NOTE
MUF-48 ~
115V 60Hz SHADED POLE
INDUCTION AL 5
MUF-28
PART NO. POLE
MUF-28
MODEL
MUF-48 4P
MUF-28
MODEL
PART NAME RATING
INPUT TYPE
MUF-48 M729900200 SHADED
POLE
INDUCTION
PART NAME
THERMOSTAT ~ PAF-7037-01 RANCO
MUF-48
THERMOSTAT ~ PAF-7037-02
MUF-28
MAKER
TECUMSHE
DAEWOO
~
NOTE
RANCO
MAKER
SUNGSHIN
MAKER
SUNGSHIN
ZYTEL
4
MAKER

5.TEMPERATURE CONTROL INSTRUCTION
5-1.HOW TO USE THE TEMPERATURE CONTROL
5-2.FUNCTION TABLE
No Function Controlled
Tempressor Compressor 1.The temperature can be changed by turning the dial knob
Control Evap.Fan motor 2.Compressor is automatically turned on and off by thermostat.
Cond.Fan Motor ■ Cut in and out temperature chart. °F
1 Model:
NO. Cool Normal Cold
MUF-28 Cut in 9.5±1.5 5.9±1.5 4.1±1.5
Cut Out -3.1 -6.7 -7.5
2 Model: NO. Cool Normal Cold
MUF-48 Cut in 2.3±1.5 -1.3±1.5 -3.1±1.5
Cut Out -9.4 -13 -14.8
Description

48 28
COUNTER TOP
COUNTER TOP Assembly WR25700100 SUS304-#4 1
COUNTER TOP Assembly WR45700100 SUS304-#4 1
CASTER M726500100 5INCH MOVING 2 2 SAME AS SD SERIES
CASTER M726500200 5INCH MOVING STOPPING 2 2 SAME AS SD SERIES
TOP HINGE ( R ) M722900100 SUS304-2B,SM45C 1 1 SAME AS SD SERIES
TOP HINGE ( L ) M722900200 SUS304-2B,SM45C 1 SAME AS SD SERIES
TOP HINGE SPACER M725000100 SUS439-2B 2 1 SAME AS SD SERIES
BOTTOM HINGE (U)(R) 30229M0400 SUS304-2B,SM45C 1 1 SAME AS SD SERIES
BOTTOM HINGE (U)(L) 30229M0300 SUS304-2B,SM45C 1 SAME AS SD SERIES
DOOR GASKET M272300100 PVC 1 SAME AS SD SERIES
DOOR GASKET M722300100 PVC 2 SAME AS SD SERIES
DOOR Assembly (R) WM20000900 SUS304-#4 1
DOOR Assembly (R) WM71700100 SUS304-#4 1
DOOR Assembly (L) WM71700200 SUS304-#4 1
DOOR BUSHING M720700100 PA-66 4 2 SAME AS SD SERIES
COMPRESSOR M369700100 HBL-27YE-1 (1/4HP) 1 SAME AS SD SERIES
COMPRESSOR G2F5700100 SK1A1C-L2W (1/3HP) 1 SAME AS SD SERIES
SUCTION PIPE(B) UF24400100 CU 1 SAME AS SD SERIES
SUCTION PIPE(B) UF44400100 CU 1 SAME AS SD SERIES
SUCTION PIPE(A) UF24400200 CU 1 SAME AS SD SERIES
SUCTION PIPE(A) UF44400200 CU 1 SAME AS SD SERIES
COMP BASE M270300100 GI 1 SAME AS SD SERIES
COMP BASE M600300100 GI 1 SAME AS SD SERIES
48 28
CONDENSER FAN MOTOR 3963328120 IS4420DWSN-2A 1 1 SAME AS SD SERIES
POWER CORD M721300100 KKP-30(9.85FT) 1 1 SAME AS SD SERIES
CONDENSER FAN AIR GUIDE M722500900 GI SAME AS SD SERIES
DRAIN PIPE UF44400500 CU 1 SAME AS SD SERIES
CONDENSER MOTOR BRACKET 3020602200 GI 1 1 SAME AS SD SERIES
CONDENSER FAN BLADE M729800100 AL 1 1 SAME AS SD SERIES
REFRIGERATION COMPARTMENT
EVAP FAN MOTOR M729900200 DAI-6202DEUA 3 2 SAME AS SD SERIES
6.PARTS LIST FOR M3 MUF
Part name Part code Description Model Remark
DOOR
COMPRESSOR COMPARTMENT
Part name Part code Description Model Remark

48 28
LOUVER UF25800100 SUS439-2B 1 SAME AS SD SERIES
LOUVER UF45800100 SUS439-2B 1 SAME AS SD SERIES
SHELF WM77800100 Pe-coating(gray) 2
SHELF WM27800100 Pe-coating(gray) 1
FIXTURE SHELF CLIP 30220L0900 PA-66 8 4 SAME AS SD SERIES
SHELF MID BRACKET M720600100 SUS304 1 SAME AS SD SERIES
SHELF STANDARD M725300200 SUS304 8 4 SAME AS SD SERIES
DRAIN PAN GUIDE(R) M272500100 GI 1SAME AS SD SERIES
DRAIN PAN GUIDE(L) M272500200 GI 1SAME AS SD SERIES
EVAPORATOR AS UF27000100 CU,SPG,AL 1SAME AS SD SERIES
EVAPORATOR AS UF47000100 CU,SPG,AL 1SAME AS SD SERIES
THERMOSTAT PAF-7037-01 1 SAME AS SD SERIES
THERMOSTAT PAF-7037-02 1SAME AS SD SERIES
EVAPOVATOR FAN DUCT UF26900200 SUS439-2B 1 SAME AS SD SERIES
EVAPOVATOR FAN DUCT UF46900200 SUS439-2B 1 SAME AS SD SERIES
EVAPOVATOR DUCT UF26900100 SUS439-2B 1 SAME AS SD SERIES
EVAPOVATOR DUCT UF46900100 SUS439-2B 1 SAME AS SD SERIES
MULLION FRAME M722200400 PVC 1 SAME AS SD SERIES
MULLION BACK FRAME M722200200 SUS439-2B 1 SAME AS SD SERIES
MULLION FRAME INSULATION M723300100 F-PS 1 SAME AS SD SERIES
CONDENSER AS UF25900101 CU,SPG,AL 1 SAME AS SD SERIES
CONDENSER AS UF45900101 CU,SPG,AL 1 SAME AS SD SERIES
BRACKET MOTOR UF40600101 SUS304-2B 3 2 SAME AS SD SERIES
FAN COOLING BLADE 3011802210 ZYTEL 3 2 SAME AS SD SERIES
SPACER CUSHION M721500300 RUBBER 4 4 SAME AS SD SERIES
Part name Part code Description Model Remark

7.REPLACEMENT OF MAIN COMPONENTS
7-1.REPLACING DOOR
A.Unscrew the top hinge
B.Lift the door
7-2.REFRIGERATION COMPARTMENT PARTS
A.Disassemble the evaporator fan duct assembly

REPLACEMENT OF MAIN COMPONENTS
B.Disassemble the evaporator fan motor
D.Disassemble the evaporator duck

REPLACEMENT OF MAIN COMPONENTS
E.Remove the thermostat & sensor
F.Remove the evaporator coil
7-3.COMPRESSOR COMPARTMENT PARTS
A.Disassemble the rear grill

REPLACEMENT OF MAIN COMPONENTS
B.Disassemble the cable tie
C.Disassemble the condesing unit
two screws as above Pull out the condensing unit
D.Disassemble the condenser fan motor

REPLACEMENT OF MAIN COMPONENTS
7-4.REPLACING THE EVAPORATOR & EVAPORATOR FAN MOTOR.
A.Unscrew the screw located on both sides and top of the evap duct assamble fixture
D.Unscrew the screws located on left and right side of the evap duct.

REPLACEMENT OF MAIN COMPONENTS
E.And then, you can replace fan motor, evaporator coil and thermo sensor.