Howard McCray GR48 Installation Manual

INSTALLATION AND OPERATION INSTRUCTIONS

FOR

BOTTOM MOUNT REFRIGERATORS AND FREEZERS

INSPECTION

When the equipment is received, all items should be carefully checked against the Bill of Lading to insure all crates and cartons have been received. Do not sign the freight bill clear until the freight has been properly inspected for damage. All units should be inspected for damage including concealed damage by uncrating immediately. If any damage is found, it should be reported to the carrier at once, noted on the Bill of Lading and a claim should be filed with the carrier. This equipment has been inspected and tested in the manufacturing facility and has been crated in accordance with transportation rules and guidelines. The manufacture is not responsible for freight loss or damages.

INSTALLATION

The unit has been secured to the shipping base with four bolts. Remove these bolts and separate the unit from the shipping base. Locate the casters or legs found inside the unit. Attach the casters or legs to the unit base by screwing them into the threaded fittings that were used to secure the shipping base. Use the wrench provided to tighten the casters to the unit. The casters with the brakes should be installed on the front of the unit. For proper drainage of condensate, the unit should be level when placed in its permanent location. Leveling shims are in cluded in the accessories package in the cabinet. Loosen the casters and insert shims between caster and bottom of the unit. Retighten the caster.

The exterior of the cabinet and doors have been protected by a plastic covering. Peel this protective covering before installation. After removing the covering, clean the interior and exterior surfaces of the unit with soap and water and a rinse with clean water. Do not use chlorinated cleaners on the surfaces as they can cause corrosion.

If the door(s) have come out of alignment during shipping they will need to be adjusted. This can be accomplished by opening the door(s) and loosening the screws that hold both the top and bottom hinges to the cabinet. After adjusting the door so it is aligned correct, tighten the screws to securely hold the hinges and door(s) in place.

The shelves and self clips are packaged inside the unit. Install the shelf clips on the pilasters inside the unit and set the shelves on the clips. The shelves are adjustable in ½” increments.

The refrigeration system located at the bottom of the unit requires free air access for proper operation. Allow a minimum of seven inches between the back of the cabinet and the wall. Do not locate the unit next to heat generating equipment or in direct sunlight.

Confirm that the proposed electrical outlet has the correct voltage, frequency and current carrying capacity for the requirements of the unit. This information is noted on the data plate on the inside left wall of the unit. The unit should be isolated on a circuit. Do not use an extension cord to get power to the unit. Improper electrical installations will void the compressor warranty.

1

■ MODEL : F23/F49/F72(FREEZER) R23/R49/R72(REFRIGERATOR)

■ MODEL : F23/F49/F72(FREEZER) R23/R49/R72(REFRIGERATOR) ■ MODEL : F23/F49/F72(FREEZER) R23/R49/R72(REFRIGERATOR) GR26/GR48/GR70(MERCHANDISERS)

GR26/GR48/GR70(MERCHANDISERS)

GR26/GR48/GR70(MERCHANDISERS) GR26/GR48/GR70(MERCHANDISERS)

A. COMMERCIAL FREEZER, REFRIGERATOR GENERAL

1. SPECIFICATION - - - - - - - - - - - - - - - - - - - - - - A2

1. SPECIFICATION - - - - - - - - - - - - - - - - - - - - - - A2 1. SPECIFICATION - - - - - - - - - - - - - - - - - - - - - - A2

1) GENERAL

1) GENERAL 1) GENERAL

2) MAIN COMPONENTS

2) MAIN COMPONENTS 2) MAIN COMPONENTS

2. REFRIGERATION CYCLE - - - - - - - - - - - - - - - - - - - A6

2. REFRIGERATION CYCLE - - - - - - - - - - - - - - - - - - - A6 2. REFRIGERATION CYCLE - - - - - - - - - - - - - - - - - - - A6

3. TROUBLE SHOOTING - - - - - - - - - - - - - - - - - - - - - A8

3. TROUBLE SHOOTING - - - - - - - - - - - - - - - - - - - - - A8 3. TROUBLE SHOOTING - - - - - - - - - - - - - - - - - - - - - A8

1) CHECKING THE POWER SUPPLY

1) CHECKING THE POWER SUPPLY 1) CHECKING THE POWER SUPPLY

2) CHECKING THE POWER SUPPLY OF CONTROL BOARD

2) CHECKING THE POWER SUPPLY OF CONTROL BOARD 2) CHECKING THE POWER SUPPLY OF CONTROL BOARD

3) CHECKING THE CONTROL PART OF REFRIGERATION CYCLE

3) CHECKING THE CONTROL PART OF REFRIGERATION CYCLE 3) CHECKING THE CONTROL PART OF REFRIGERATION CYCLE

4) CHECKING THE DEFROST PART

4) CHECKING THE DEFROST PART 4) CHECKING THE DEFROST PART

5) WHEN THE UNIT DOES NOT COOL

5) WHEN THE UNIT DOES NOT COOL 5) WHEN THE UNIT DOES NOT COOL

6) WHEN THERE IS A ABNORMAL NOISE

6) WHEN THERE IS A ABNORMAL NOISE 6) WHEN THERE IS A ABNORMAL NOISE

7) WHEN THE TEMPERATURE DOES NOT DISPLAY

7) WHEN THE TEMPERATURE DOES NOT DISPLAY 7) WHEN THE TEMPERATURE DOES NOT DISPLAY

8) WHEN THE LAMP DOES NOT LIGHT

8) WHEN THE LAMP DOES NOT LIGHT 8) WHEN THE LAMP DOES NOT LIGHT

9) CHECKING SENSOR

9) CHECKING SENSOR 9) CHECKING SENSOR

4. FEATURE CHART - - - - - - - - - - - - - - - - - - - - - - - A18

4. FEATURE CHART - - - - - - - - - - - - - - - - - - - - - - - A18 4. FEATURE CHART - - - - - - - - - - - - - - - - - - - - - - - A18

5. WIRING DIAGRAM - - - - - - - - - - - - - - - - - - - - - - A30

5. WIRING DIAGRAM - - - - - - - - - - - - - - - - - - - - - - A30 5. WIRING DIAGRAM - - - - - - - - - - - - - - - - - - - - - - A30

6. REPLACEMENT OF COMPONENTS - - - - - - - - - - - - - - - - - A35

6. REPLACEMENT OF COMPONENTS - - - - - - - - - - - - - - - - - A35 6. REPLACEMENT OF COMPONENTS - - - - - - - - - - - - - - - - - A35

-A1 -

1. SPECIFICATION

AC 115V

60Hz

1. SPECIFICATION

1. SPECIFICATION 1. SPECIFICATION

1) GENERAL - COMMERCIAL FREEZERS AND REFRIGERATORS

1) GENERAL - COMMERCIAL FREEZERS AND REFRIGERATORS1) GENERAL - COMMERCIAL FREEZERS AND REFRIGERATORS

PRODUCT

MODEL

Capacity (Cu,Ft)

Net Capacity (Cu,Ft)

Exterior Dimension

(Including casters)

(in)

Interior Dimension (Including casters)

(in)

Net Weight (lbs)

Door Type

Door Material

Shelves

SOLID DOOR FREEZER SOLID DOOR REFRIGERATOR

F23 F49 F72 R23 R49 R72

23 49 72 23 49 72

20.8 45.2 65.3 20.8 45.2 65.3

(W) 27.4 55.1 78 27.4 55.1 78

(D)

(H)

(W) 23.6 51.4 74.2 23.6 51.4 74.2

(D)

(H)

295 499 622 288 475 609

Swing 1EA Swing 2EA Swing 3EA Swing 1EA Swing 2EA Swing 3EA

Stainless steel (STS)

4EA 8EA 12EA 4EA 8EA 12EA

31.3

83.9

25

60.8

Power Voltage

Plug in - Installation

Amps

Compressor

Refrigerant

Range of Temperature

Door auto-close equipment

Door stop equipment

Air suction equipment

Condensing unit

AC 115V/60Hz

NEMA 5-15P

8.5A 9.5A 9.0A 7.5A 7.5A 10.0A

1/2HP 3/4HP 1.1HP 3/8HP 3/8HP 1/2HP

R-404A

(12.0 oz)

R-404A

(22.2 oz)

Below 0 ℉

/208-230V

NEMA 14-20P

R-404A

(23.6 oz)

Auto-close Spring

120˚ Stop

Air damper

4in × 4EACaster

Sliding Type

R-134A (8.5 oz)

AC 115V/60Hz

NEMA 5-15P

R-134A

(11.3 oz)

32 ~ 40 ℉

◈ Above specifications are subjected to change without prior notice for quality improvement.

◈ The nameplate(includes Serial Number) is located on the upper left of the cabinet interior.

R-134A

(14.1 oz)

-A2 -

2) MAIN COMPONENTS - COMMERCIAL FREEZERS AND REFRIGERATORS

2) MAIN COMPONENTS - COMMERCIAL FREEZERS AND REFRIGERATORS2) MAIN COMPONENTS - COMMERCIAL FREEZERS AND REFRIGERATORS

PRODUCT

MODEL

Compressor

(Manufacture)

Compressor Capacity(kcal/h)

Type of Compressor motor

Compressor O.L.P

Compressor Relay

Starting Capacitor

Running Capacitor

Type of Evaporator

Evaporator pipe Dimensions

Cooling Fan Motor

SOLID DOOR FREEZER SOLID DOOR REFRIGERATOR

F23 F49 F72 R23 R49 R72

CAE2420Z(A)

(Tecumseh)

CAJ2432Z(A)

(Tecumseh)

CAJ2446Z(H)

(Tecumseh)

LBP 571 LBP 808 LBP 1219 LBP 1586

CSIR CSR CSR CSIR

MST16AHN GA3PJU00 MST00AHN GA3SJU81

3ARR3*5R* 3ARR3*3A* 3ARR18A100B

315㎌/160V 315㎌/160V 88㎌/160V 250㎌/160V

- 30㎌/400V 15㎌/160V -

SK6A1C-H2Y

(Samsung)

HBP 1120

RSIR

4TM811XHBZZ-53

MTRP0052-02

-

CAJ4476Y(A)

(Tecumseh)

Cu pipe + Al fin + Blue color coating

3/8"

IS3225LTSA, 120V/60Hz

Type of Condenser

Condenser pipe Dimensions

Condenser Fan Motor

Drier

Temperature Control

Running Indication

Interior Temp. Indication

Interior Lamp

Defrost for evaporator

Defrost sheath heater

Defrost pan heater

Drain heater

Cu pipe + Al fin

3/8"

MA7425W1, 120V/60Hz

OD 1", XH-9, 1.06oz

Thermistor

Digital Display

40W × 1EA 40W × 1EA

Heated defrost

(Control of thermistor)

40W × 2EA 40W × 2EA

Off cycle

450W 670W 944W - - -

60W 90W 128W - - -

9W

- - -

Door switch

Power switch

SP201R-7DR, AC125V

SL112A, AC125V/12A

-A3 -

3) GENERAL - MERCHANDISERS

3) GENERAL - MERCHANDISERS3) GENERAL - MERCHANDISERS

PRODUCT

MODEL

Capacity (Cu,Ft)

Net Capacity (Cu,Ft)

Exterior Dimension

(Including casters)

(in)

Interior Dimension (Including casters)

(in)

Net Weight (lbs)

Door Type

Door Material

Shelves

(W)

(D)

(H)

(W)

(D)

(H)

MERCHANDISERS

GR26 GR48

26 48

24.4 45.3 65.3

28.4

31.3

78.7

25

27

62.5

287

4EA 8EA 12EA

53.2

29.9

78.7

50

25.5

61.4

474 716

Glass + Al

GR70

70

78

31.3

83.9

74.2

25

60.8

Swing 3EASwing 1EA Sliding 2EA

Power Voltage

Plug in - Installation

Compressor

Refrigerant

Range of Temperature

Door auto-close equipment

Door stop equipment

Air suction equipment

Caster Adjust foot 4EA

Condensing unit

Door switch

Power(or Lamp) switch

3.9AAmps

1/4 HP 1/2 HP

R-134A

(10.6 oz)

120˚ Stop - 120˚ Stop

-

AC 115V/60Hz

NEMA 5-15P

10.0A

R-134A

(16.2 oz)

32 ~ 40℉

Auto-close Spring

Air damper

Adjust foot 6EA

Sliding Type

-

SL112A, AC125V/12A

Adjust foot 6EA

◈ Above specifications are subjected to change without prior notice for quality improvement.

11.9A

1/2 HP

R-134A

(17.6 oz)

-

◈ The nameplate(includes Serial Number) is located on the upper left of the cabinet interior.

-A4 -

4) MAIN COMPONENTS - MERCHANDISERS

Ballast Name

DY232 IS120

32W × 1EA

B232I120RH-A

17W/32W

B232I120RH-A

32W × 2EA

32W(Double)×1EA /

4) MAIN COMPONENTS - MERCHANDISERS

4) MAIN COMPONENTS - MERCHANDISERS4) MAIN COMPONENTS - MERCHANDISERS

PRODUCT

MODEL

Compressor

(Manufacture)

Compressor Capacity(kcal/h)

Type of Compressor motor

Compressor O.L.P

Compressor Relay

Starting Capacitor

Running Capacitor

Type of Evaporator

Evaporator pipe Dimensions

Cooling Fan Motor

Type of Condenser

MERCHANDISERS

SK182C-L2U (SAMSUNG)

LBP 256 LBP 1946

RSCR CSIR

4TM444NHBYY

J531Q32E4R7M1802

-

12㎌/250V -

IS3225LTSA, 120V/60Hz

CAJ4476Y(A)

(Tecumseh)

CRA38014

GE3ARR3

250㎌/160V

Cu pipe + Al fin

1/2"

Cu pipe + Al fin

GR70HGR48SGR26H

CAJ4476Y(A)

(Tecumseh)

HBP 1946

CSIR

CRA38014

3ARR3*2M*

250㎌/160V

-

Condenser pipe Dimensions

Condenser Fan Motor

Drier

Temperature Control

Running Indication

Interior Temp. Indication

Interior Lamp

Ad. Panel Fluorescent Lamp

Ballast

(Manufacture)

Defrost for evaporator

Defrost sheath heater

Thermostat

GNF-250L

(Fluorescent lamp)

32W × 1EA

17W×1EA

(ADVANCE)

-

3/8"

MA7425W1, 120V/60Hz

OD 1", XH-9, 1.06oz

Thermostat

(GNF-240L)

-

(Fluorescent lamp)

32W × 1EA

32W(Double)×1EA

(ADVANCE)

Off cycle

-

Thermostat

(GNF-246L)

(Fluorescent lamp)

32W × 1EA

32W(Double)×2EA

(DOYOUNG)

-

Defrost pan heater

Drain heater

-

-A5 -

2. REFRIGERATION CYCLE

2. REFRIGERATION CYCLE 2. REFRIGERATION CYCLE

Mechanical refrigeration is accomplished by continuously circulating, evaporating, and condensing

a fixed supply of refrigerant in a closed system. Evaporation occurs at a low temperature and

pressure while condensation occurs at high temperature and pressure. Thus it is possible to

transfer heat from an area of low temperature(i.e., refrigerated compartment) to an area of high

temperature(i.e., surrounding of refrigerator).

CONDENSER

COMPRSSORCAPI LLARY TUBE

EVAPORATOR

THE BASE REFRIGERATION CYCLE

THE BASE REFRIGERATION CYCLETHE BASE REFRIGERATION CYCLE

Beginning the cycle at the evaporator inlet the low pressure liquid expands, absorbs heat

(so refrigerator inner-cabinet is cooled), and evaporates, changing to a low pressure gas at the

evaporator outlet.

The compressor pumps this gas from the evaporator, increases its pressure, and discharges the

high pressured- temperature gas to the condenser.

The condenser lets high pressured- temperature gas emit the heat(so surrounding of the

condenser is warmed) in order to make it condense.

The capillary tube prevents high pressured- temperature gas from entering the evaporator

in order to lower the pressure in the evaporator and control the flow of refrigerant into the

evaporator automatically.

Eventually the desired air temperature in refrigerator inner-cabinet is reached, the thermostat

(temperature controller) will break the electrical circuit to the compressor motor and stop

the compressor.

-A6 -

As the temperature of the air rises, the thermostat(or controller) remakes the electrical circuit.

SUCTION PIPE (INNER-CABINET)

The compressor starts, and cycle continues.

The schematic refrigeration(or freezing) cycle of F23/F49/F72/R23/R49/R72/GR26/GR48/GR70

is like below.

3

Heat Exchange

10

9

6

2

7

5

11

1

No.

COMPRESSOR

1

CONDENSER C1220TS-O,H

2

Part Name Description

12

MODEL

F23

F49

8

F72

R23/R49

R72

4

GR26H

GR48S

GR70H

COMPRESSOR

CAE2420Z(A)

CAJ2432Z(A)

CAJ2446Z(H)

SK6A1C-H2Y

CAJ4461Y(A)

SK182C-L2U

CAJ4476Y(A)

Remark

EVAPORATOR C1220TS-O,H

3

DRIER C1220T-H

4

ACCUMULATOR C1220T-1/4H

5

DISCHARGE PIPE C1220T-O

6

DRIER CONNECT PIPE C1220T-O

7

CAPILLARY TUBE C1220T-H

8

9

SUCTION PIPE (COMPRESSOR) C1220T-O

10

CHARGE PIPE (COMPRESSOR) C1220T-O

11

CHARGE PIPE (DRIER) C1220T-O

12

C1220T-O

-A7 -

3. TROUBLESHOOTING

3. TROUBLESHOOTING 3. TROUBLESHOOTING

1) CHECKING THE POWER SUPPLY

1) CHECKING THE POWER SUPPLY1) CHECKING THE POWER SUPPLY

① F23 / F49 / F72 / R23 / R49 / R72

① BASF1/BASF2/BASF3/BASR3 Models ② BASR1/BASR2/BAGR72 Models

Is the power cord

plugged in?

NO

Plug in

YES

Is the rated voltage

supplied?

NO

Correct

YES

Is the power cord

normal?

NO

Defective power cord

② GR26H / GR48S / GR70H

Is the power cord

plugged in?

NO

Plug in

YES

Is the rated voltage

supplied?

NO

Correct

YES

Is the power cord

normal?

NO

Defective power cord

YES

Is the power switch

"OFF" position?

YES

Move to "ON" position

YES

NORMAL

NO

NORMAL

-A8 -

2) CHECKING THE POWER SUPPLY OF CONTROL BOARD

Secondary: AC12V (Red wire)

Primary: AC 115V

Is the

2) CHECKING THE POWER SUPPLY OF CONTROL BOARD

2) CHECKING THE POWER SUPPLY OF CONTROL BOARD2) CHECKING THE POWER SUPPLY OF CONTROL BOARD

① F23 / F49 / F72 / R23 / R49 / R72

① BASF1/BASF2/BASF3/BASR3 Models

Is the rated

voltage supplied to

the C/B?

YES

Does the fuse fail?

YES

Defective fuse

NOTES * C/B: Control Board

NO

Check wiring

Does the coil

winding of transformer

open?

NO

Is the secondary

output volt. of trans.

normal?

YES

Defective

transformer

NO

Defective

transformer

* Fuse Spec.: AC250V, 8A

(BASF1/BASF2/BASR3)

* Transformer Spec.

AC20V (Blue wire)

Is the DC 24V

supplied to coil part

in relay ?

Does the

contact part in relay

continue?

-A9 -

NO

Check C/B

YES

NO

Defective

Relay

YES

NORMAL

3) CHECKING THE CONTROL PART OF REFRIGERATION CYCLE

3) CHECKING THE CONTROL PART OF REFRIGERATION CYCLE3) CHECKING THE CONTROL PART OF REFRIGERATION CYCLE

3) CHECKING THE CONTROL PART OF REFRIGERATION CYCLE

① F23 / F49 / F72 / R23 / R49 / R72

① BASF1/BASF2/BASF3/BASR3 Models

Check

the power supply

Is the

Does the wiring

to comp. connected

properly?

YES

Are the relay

& OLP in comp.assembled

properly?

YES

Check

the continuity of OLP

in compressor

NO

Correct

Defective OLP

Are the sensors

in C/B connected

properly?

YES

Check

the resistance of

T-Sensor

YES

Is the temp.

displayed in D/B

properly?

YES

NO

Correct

NO

Defective T-sensor

NO

Defective micom

YES

Check

the continuity of relay

in compressor

YES

Check

the power supply of control board

NO

Defective relay

-A10 -

Check

the temperature

set point

NO

YES

Defective compressor

NOTES * C/B: Control Board

* D/B: Display Board * OLP: Overload Protector

Temperature resetting

② BASR1/BASR2/BAGR72 Models

Is the

② GR26H / GR48S / GR70H

Check

the power supply

When the

thermoatat is OFF,

does the comp. run?

NO

Does the wiring

to comp. connected

properly?

YES

Are the relay

& OLP in comp.assembled

properly?

YES

Defective thermostat

NO

Correct

NO

Correct

Check

the continuity of OLP

in compressor

NO

Defective OLP

YES

Check

the continuity of relay

in compressor

YES

Defective compressor

-A11 -

NO

Defective

relay

4) CHECKING THE DEFROST PART

4) CHECKING THE DEFROST PART4) CHECKING THE DEFROST PART

4) CHECKING THE DEFROST PART

① F23 / F49 / F72

① BASF1/BASF2/BASF3 Models

Check

the power supply

Do the B/M and

D-Sensor located

in place?

YES

Do the wiring

to the heater and B/M

connected properly?

YES

Check

the resistance of

D-sensor

YES

NO

Correct

Check wiring

Defective D-Sensor

Does the B/M

continue below

41℉?

YES

Does the defrost

output on C/B normal in

defrost mode?

YES

Difective micom

NOTES

NO

Defective Bi-Metal

NO

Defective

Control Board

Are the defrost heaters normal?

YES

NO

Defective heater

* C/B: Control Board * B/M: Bi-Metal

(Temp. Limiting Controller)

-A12 -

5) WHEN THE UNIT DOES NOT COOL

5) WHEN THE UNIT DOES NOT COOL5) WHEN THE UNIT DOES NOT COOL

① All Models

① BASF1/BASF2/BASF3/BASR1/BASR2/BASR3/BAGR72 Models

Does

the compressor run

normally?

YES

Is the unit

located in a level

place?

YES

Is the temperature

setpoint proper?

YES

NO

Check the control part of refrigeration cycle

Correct

Temperature resetting

Is there

dust on condenser

fin?

NO

Does the cond.

(eva.) fan motor rotate

normally?

YES

Does the

refrigerant leak?

NO

YES

Clean

NO

Defective motor,fan

YES

Correct

Are the goods

loaded properly?

YES

Does the cool air

leak?

NO

Does the frost

form excessively

in evaporator?

NO

YES

Correct

Check door gasket

Freezer: Check the defrost part

Refrigerator: forced defrost

Is the

refrigernat line

restricted?

NO

Is the contact

of door switch normal?

YES

When door closed,

Are the door S/Ws pushed

by the top of door?

YES

Correct

Excluding GR70H

Excluding BAGR72

NO

Defective

door switch

NO

Apply spacer

between door switch and the top of door

Check compressor

-A13 -

6) WHEN THERE IS A ABNORMAL NOISE

6) WHEN THERE IS A ABNORMAL NOISE6) WHEN THERE IS A ABNORMAL NOISE

6) WHEN THERE IS A ABNORMAL NOISE

① All Models

① BASF1/BASF2/BASF3/BASR1/BASR2/BASR3/BAGR72 Models

Is the unit

located in a level

place?

YES

Is the

high voltage supplied?

NO

Are the pipes

rattled?

NO

YES

Correct

Adjust

Reform to be free of contact

Are the fans bent?

NO

Do the

fans rotate well?

YES

Is there any

noise in motor?

NO

YES

Defective fan

NO

Defective fan,motorvoltage

YES

Defective motor

Are the parts

assembled tightly?

YES

NO

Tighten

-A14 -

Comp is running

but the unit does

not cool

YES

Check compressor

7) WHEN THE TEMPERATURE DOES NOT DISPLAY

Is

7) WHEN THE TEMPERATURE DOES NOT DISPLAY

7) WHEN THE TEMPERATURE DOES NOT DISPLAY7) WHEN THE TEMPERATURE DOES NOT DISPLAY

① F23 / F49 / F72 / R23 / R49 / R72

① BASF1/BASF2/BASF3/BASR3 Models

Check

the power supply

Check

the power supply

in control board

Does the connection

between C/B and D/B

properly?

NO

YES

Is the micom

inserted on C/B

properly?

NO

YES

Replace display board

NOTES * C/B: Control Board

* D/B: Display Board

Tighten

-A15 -

8) WHEN THE LAMP DOES NOT LIGHT

8) WHEN THE LAMP DOES NOT LIGHT8) WHEN THE LAMP DOES NOT LIGHT

8) WHEN THE LAMP DOES NOT LIGHT

① BASF1/BASF2/BASF3 Models ② BAGR72 Model

① F23 / F49 / F72 / R23 / R49 / R72

② GR26H / GR48S / GR70H

BASR1/BASR2/BASR3 Models

Check

the power supply

Check the

connecting points

with socket

YES

Is the lamp

defective?

NO

Adjust the lamp

for good connection

YES

Defective lamp

Check

the power supply

Check the

connecting points

with socket

YES

Is the lamp

defective?

NO

Adjust the lamp

for good connection

YES

Defective lamp

Check

the continuity of

lamp switch

NO

Defective lamp switch

the continuity of

lamp switch

YES

When door closed,

Are the door S/Ws pushed

by the top of door?

NO

Apply spacer

between door switch and the top of door

the continuity of

ballast

YES YES

Check wiring Check wiring

* Incandescence Lamp : 40W

* Fluorescent Lamp: 32W

Check

NO

Defective lamp switch

YES

NO

Defective ballast

-A16 -

9) CHECKING SENSOR

9) CHECKING SENSOR 9) CHECKING SENSOR

Sensor assembly consists of T-sensor (lead wire: orange) and D-sensor (lead wire: blue). The T-sensor is used for cabinet temperature control and the D-sensor is used for defrost control.

The resistance of the sensor varies depending on temperature.

If you Immerse the sensor in a glass containing ice water for 2 minutes and then check for the resistance between sensor leads, the normal reading is 7.88㏀ (T-sensor) / 30㏀ (D-sensor).

Resistance (㏀)

Temperature (℉)

T-sensor (±6.5%) D-sensor (±5.5%)

-5 23.04 79.17

0 19.76 68.92

10 14.65 52.61

23 10.10 37.55

32 7.88 30.00

41 6.20 24.13

50 7.91 19.53

60 3.82 15.56

70 3.00 12.48

-A17 -

4. FEATURE CHART

4. FEATURE CHART 4. FEATURE CHART

1) F23/R23 (1 Door)

1) F23/R23 (1 Door) 1) F23/R23 (1 Door)

Top grille

Display panel

Door S/W

Door handle

Power S/W

Door

Lower Grille

Caster

(FRONT)

(FRONT) (FRONT)

-A18 -

Lamp

Lamp cover

Cooling Fan

Damper(Air)

Evaporator

Door

Shelves

Shelf Pilaster

Air-guard

Support Shelf Pilaster

(SIDE)

(SIDE) (SIDE)

-A19 -

2) F49/R49 (2 Door)

2) F49/R49 (2 Door) 2) F49/R49 (2 Door)

Top grille

Door S/W

Display panel

Power S/W

Door handle

Door

Lower grille

Caster

(FRONT)

(FRONT) (FRONT)

-A20 -

Lamp

Lamp cover

Cooling Fan

Damper(Air)

Evaporator

Door

Shelves Shelf

Pilaster Air-guard

Support Shelf Pilaster

(SIDE)

(SIDE) (SIDE)

-A21 -

Howard McCray GR48 Installation Manual

Specifications and Main Features

Frequently Asked Questions

User Manual