service manual - · pdf fileprecaution in installation and initial testing ... 0070301474...

Product Type: Explosion Proof Laboratory Refrigerator

Product Model: HLR-118SF/310SF

Service manual

Service manual of Explosion Proof Laboratory Refrigerator

2

Revision

Revision Date of

Revision

Author of

Revision

Key Revised Content


3

Table of Contents

1. Illustration of Product Nomenclature ........................................................................................................................ 4

2. Product Appearance and Illustration of Parts ............................................................................................................ 4

3. Product Function and Parameters ............................................................................................................................. 5

4. List of Serviceable Electrical Components and Wiring Diagram ................................................................................ 5

5. List of Serviceable Refrigeration parts and Specification........................................................................................... 7

6. Exploded View of Parts .............................................................................................................................................. 8

7. Operation Instruction .............................................................................................................................................. 11

8. Precaution in installation and Initial Testing ............................................................................................................ 14

9. Instruction to replace key components ................................................................................................................... 15

10. Opening packaging ................................................................................................................................................. 21

11. Transportation Requirements................................................................................................................................. 22

12. Installation ambient ............................................................................................................................................... 22


4

1. Illustration of Product Nomenclature

H（Haier）L（Laboratory）R（Refrigerator）-118（118 Liter Storage Volume）SF（Spark free）

H（Haier）L（Laboratory）R（Refrigerator）-310（310Liter storage Volume）SF（Spark free）

2. Product Appearance and Illustration of Parts

Display board

Magnetic switch Lock

Lock ring

Foot

Self-closing door


5

3. Product Function and Parameters

Model Number HLR-118SF HLR-310SF

Product Description Upright, Solid Door, and Forced Air Cooling Upright, Solid Door, and Forced Air Cooling

Ambient For

Installation

Type N, 16 C to 32 C Type N, 16 C to 32 C

Cabinet Temperature 0~19℃ 0~19℃

Storage Volume（L） 118L 310L

Exterior Dimension

(W X D X H)

597*635*835 mm 605*598*1840 mm

Cabinet and Interior

Materials

Powder Coated Cold Rolled Steel/thermally Formed PS

Board

Powder Coated Cold Rolled Steel/thermally Formed

PS Board

Rated Voltage 220-240V/50Hz 220-240V/50Hz

Temperature Control Microprocessor Microprocessor

Sensor Quantity One One

Alarm Method Buzzer and Flash Buzzer and Flash

Alarm High/Low Temperature, Sensor error, door ajar Temperature, Sensor error, door ajar

Leveling Leg And

Caster

Two Leveling Legs and Two Casters Two Leveling Legs and Two Casters

Port Hole / /

Shelf /Storage Basket Two Glass Shelves and One Storage Basket Four Glass Shelves

Data Tracking / /

Lighting / /

Door and Lock Changeable Upper Safety Lock Changeable Upper Safety Lock with Padlock

Defrost Method Automatic Defrost, Forced Defrost, No Defrost Heater Automatic Defrost, Forced Defrost, No Defrost

Heater

Frame Defrost Not Necessary Not Necessary

Safe Operation Mode Sensor Error Safe Mode Sensor Error Safe Mode

4. List of Serviceable Electrical Components and Wiring Diagram

Item Part Number Description QTY Technical Specification Note

1 0071800028 Display Board 1 / Universal

2 0071800027 Main Control

Board

1 / Universal

3 0274000354A Relay 1 12V HLR-310SF

4 '0274000056 Safety Grid 1 / Universal

5 0274000427 Interior Fan 1 IIC Grade for Explosion Proof Universal

6 0074090123 Condenser Fan

Motor

1 EBM M4Q045-BD01-01/A47 HLR-310SF

7 0074000312A Condenser Fan

Blade

1 (Φ172/34°/BLOWER)

ALUMINUM BLADE

HLR-310SF


6

8 0274000228D Door Switch 1 Magnetic Switch HLR-310SF

9 0074090530 Switch 1 Switch HLR-118SF

10 0274300008B Over Current

protector

2 12A Universal

11 0070400234A Three-Prone

British Style

Power Cord

1 10A Universal

12 0070402090C Temperature

Sensor

1 NTC Thermal Resistance Sensor Universal


7

5. List of Serviceable Refrigeration parts and Specification

Item Part Number Description QTY Specification Note

1 0070701464 Compressor 1 TL5G HLR-118SF

2 0070701538 Compressor 1 QD123Y 220V/50Hz HLR-310SF

3 0270700552 Evaporator 1 Roll Bond HLR-118SF

4 0270700551 Evaporator 1 Roll Bond HLR-310SF

5 00605020261 Condenser 1 Wired Tube HLR-118SF

6 0070700322B Condenser 1 Wired Tube HLR-310SF

7 0060702807 Filter Dryer 1 Double manifold Universal

8 0073010002A Refrigerant

- Charge Quantity R134a:90 g HLR-118SF

0070301474 Charge Quantity R600a:90 g HLR-310SF

Compressor, discharge line, condenser, filter dryer, capillary tube, evaporator, suction line


8

6. Exploded View of Parts

Item Part Number Description QTY Note

1 0070106690B Door Handle 1 gray

2 0270805267 Door Assembly 1 gray

3 0270200177 Door Seal 1 White

4 0270200926 Short Glass Shelf 1 /

5 0270101981A Fan Shroud 1 Black

6 0270103113A Fan Motor Shield 1 White

7 0274000427 Fan Motor 1 /

8 0070700532 Evaporator 1 White

9 0270101601B Left support of display cover 1 gray

10 0270101174 lock 1 /

11 0270200668A Front grill 1 Blue

12 0270101600 Lockable Shelf 1 While

13 0071800028 Display Board 1 /

14 0074090530 Door Switch 1 /

15 00605020261 Condenser 1 /

16 0274300008B Over Current Protector 2 /

17 0270103141 Back Grill 1 gray

18 0071800027 Control Board 1 /

19 0070203552 Junction Box for Control Board 1 /


9

20 0070701464 Compressor 1 /

21 0270101591A Upper Hinge 1 /

22 0070101405 Leveling Leg 2 /

23 0270101592A Lower Hinge 1 /

24 0270200895 Long Glass Shelf 1 /

25 0270103280 Drain Pan 1 Stainless Steel

26 0270101598A Storage Basket 1 /

27 0070106115C Door Stop 1 gray

HLR-310SF:

Item Part number Description QTY Note

1 0270103109 Top board 1 /

2 0274000354A Relay 1 /

3 0071800027 Control Board 1 /

4 0270103105 Upper Hinge 1 /

5 0270101174 Lock 1 /

6 0071800028 Display Board 1 /

7 0274000228D Magnetic Switch 1 /

8 0270103110 Front Grill 1 Blue

9 0270200886 Glass Shelf 4 /

10 0270200888 Door Gasket 1 White

11 0270805261 Foamed Door 1 Gray


10

12 0070206066 Plastic guard 1 /

13 '0270103277 Drain Pan 1 Stainless Steel

14 0070700318 Evaporator 1 White

15 270103106 Lower Hinge 1 /

16 0070103526 Lock Ring 1 /

17 0070206069 Door Support 1 Nylon

18 0270103112AA Fan Grill 1 White

19 0274000427 Evaporator Fan Motor 1 /

20 0070107949 Caster 4 /

21 0070700322B Condenser 1 /

22 0074090876/0074090123 Condenser Fan Motor 1 /

23 0070701538 Compressor 1 /

24 0070700164B Connector 1 /

25 0270103103 Over Current Protector Board 1 /

26 0270103240 Machine Compartment Grills 1 /

27 0274300008B Over Current Protector 2 /


11

7. Operation Instruction

a. Control Panel HLR-118SF

HLR-310SF

Key Function Explanation

Up and

Down

Buttons

Change the temperature setting with the Up and Down

buttons

Setting

Button

Set functions, inquire maximum and minimum

temperature insides the unit.

Alarm

Function

Set upper and lower alarm limits. Inquire upper and

lower limits, cancel alarm buzzer

Light switch

Press the button to turn on the interior light. Press the

button again to turn it off. Solid door units do not have

this function.

Display set

parameters

and set

values

Display temperature setting, reference and reference

value

b. Control Methodology


12

Item Function Operation

1 Unlocking

Controller

Press + sign. The display will show 01. Use + and – sign to change the value to show

06. Pressure “Adjust” to unlock the system. The buzzer will sound once. The display

will show the current temperature. After the controller is unlocked, functions such as Set

temperature, Set internal parameters and Set alarm temperature can be accessed. All other

functions can be accessed directly.

2 Set

temperature

Step1: Press “Adjust”button to show the value of the current set temperature.

Step2: Press “+” or “-“ sign to increase or decrease the set value, the increment is 1 C.

Step3: If there is no further action in ten seconds, the control system will automatically

save the new settings and return to normal operation status. The display will no longer

flash the value.

3 Set internal

parameters

Step1: Press and hold “Adjust” button for ten seconds, the display will show “rd”.

Step2: Press “+ “ or “-“ sign to switch the codes for parameters.

Step3: Set the desired code then press “Adjust” again. The display will flash the current

value for that code.

Step4: Press “+” or “-“ sign to increase or decrease the current value.

Step5: Press “alarm “ button to return to the menu to select codes. Other selection can be

chosen.

4

Recorded

warmest and

coldest

temperatures

Step1: Simultaneously press “Adjust” and “+”buttons, display will show the warmest

temperature recorded. Releasing any one button will return to normal display.

Step2: Simultaneously press “Adjust” and “-”buttons, display will show the coldest

temperature recorded. Releasing any one button will return to normal display.

Note, each time “Adjust” button is pressed, control board will refresh the memory of

maximum and minimum records. New records will start automatically.

5

Alarm

temperature

inquiry

Step1: Simultaneously press “Alarm” and “+”buttons, display will show the upper alarm

temperature. Releasing any one button will return to normal display.

Step2: “Alarm” and “-”buttons, display will show the lower alarm temperature. Releasing

any one button will return to normal display.

6 Set alarm

temperature

Step1: Press and hold “Alarm” for ten seconds. Display will show “HA”.

Step2: Press “+” or “-“ to select the parameter code.

Step3: When a parameter code is chosen, press “Adjust” button to flash the code value.

Step4: Press “+” or “-“ to change the current value.

Step5: Press “Alarm” button to return to the menu to select other codes if necessary.

c. Definition of all parameters and initial values

Table of Ordinary Parameters

Item Parameter Definition of Parameter Adjustment

Range

Factory Setting Note

1 HA Warm Alarm Set Value Upper limit

is equal to

Set value

Default Universal


13

plus 4.

2 LA Cold Alarm Set Value Lower limit

is equal to

Set value

minus 4.

Default Universal

3 rd Temperature differential to control

compressor

1~6 1 Universal

4 Co Real time display function 0-300 60 Recommend to use 5 to

show real time

temperatures.

5 r1 Maximum temperature LE-50 20 Universal

6 r2 Minimum temperature 0-HE 2 Universal

7 AD Time delayed Alarm 0-20 15 Universal

8 CA Temperature correction -5-+5 -1 通用 Universal

9 LP LED light Control 00-01 00 通用 Universal

d. Specification of Special Functions

(1) Defrost Function

Scheduled Defrost

Condition to initiate: Set temperature must be greater than 0 C and accumulated operational time of compressor

is 8 hours.

Compressor status during defrost: Off

Condition to complete defrosting: When anyone of the following conditions is met:

(a) Cabinet temperature is warmer than 4 C

(b) Total defrost time reaches 15 minutes.

Note: If the set temperature is colder than 0 C, defrost process cannot be initiated.

(2) Safe operation when sensor error encounters.

When a sensor error occurs, the compressor will operate for tem minutes and stays off for ten minutes.

(3)Time Delayed Operation for Fan Motors

When a door is open, fan motors will stop. After the doors are closed, the fan motors will start operating in one

minute delay.


14

e. Alarm Functions And Indications

Alarm Code Definition Alarm Method Method to cancel alarm

Sensor Error EE Sensor error (short or open

circuits)

Buzzer, flashing light

and code Replace temperature sensor

Door Ajar / Door is left open for more

than one minute.

Buzzer and alarm

flashing light

Close the doors or rectify door

closing circuit.

high and low

Temperature

/ Temperature exceeds limits. Buzzer and alarm

flashing light

Check set values for HA and LA

and inspect or check sensor

location.

f. Guidelines for Trouble Shooting

Alarm Alarm

Indicator Alarm Sound Display

Trouble Shooting

High and Low

Temperature

Alarm

Display

Flashing

Mute buzzer alarm using

Cancel button.

Display temperature

only.

Temperature exceeds limits.

Check the alarm settings and

refrigeration system for any

potential abnormality.

Sensor error alarm Display

flashes.


Cancel button. Flash code “EE”

Sensor circuit might be shorted or

open. Check the sensor for

continuity. Replace the sensor if

necessary.

Interior

temperature is

warmer than 60 C

Display

flashes.


Cancel button. Display flashes “HH”

Temperature exceeds upper limit

or there is an error with the

sensor. Check the actual

temperature. Replace the

temperature sensor if necessary.

Temperature is

colder than -45 C

Display

flashes.


Cancel button. Display flashes “LL”

Temperature exceeds lower limit

or there is a sensor error. Check

the actual temperature and replace

sensor if necessary.

Door Ajar Alarm Display flashes Mute buzzer alarm using

Cancel button.

Display temperature

only

Close the door and check the

function of the door ajar alarm

function. Change the door ajar

alarm switch.

8. Precaution in installation and Initial Testing

1. This product is an air-cooled design. Do not place too much product in the unit. Do not block air

ventilation ports. Products should not lean against side walls. Please explain the usage to users.

2. There are two leveling legs at the bottom of the unit. Once the unit is situated, lower the leveling legs to

secure the unit to the ground. Explain this function to users.


15

9. Instruction to replace key components

HLR-310SF

a. Replacement of control board

Removal

Process

Picture Removal

process Precaution

Remove main

control board

Main control

board is secured

in the upper

unit. Remove

the top grill to

get to the board.

The relay is the

part located

next to it.

Removal of

Main Control

Board

Remove the

fasteners on the

board

Remove the

main control

board

Unplug the

cable on the

main control

board. The

main control

board can be

removed.

b. Removal of Display Board

Removal Step Picture Removal

method Precaution

Remove the

front panel

Remove the

two screws on

the upper part

of the front

panel.

Remove the

front panel.

Control

board

Relay

Control Board


16

Remove the

display panel

Remove the

three M4

screws,

remove the

display board.

Remove the

display board

Remove the

three screws

that secure the

display board.

Separate the

board out.

c. Position of Sensor and Inspection

There is one temperature sensor. It is secured on the back-wall of the interior.

Removal Picture Method Precaution

Remove the

fan guard.

Remove

shelves and

baskets from

the unit.

Remove the

fasteners on

the fab guard.

Remove the

fan motor

The harness

for the fan

motor is

through the

backwall of

the unit.

Sealant Fan motor

Fan guard


17

Temperature

Sensor

Location

Look up

sensor location

The

temperature

sensor is

secured to the

back wall of

the interior.

It is

predetermined

by a secured

point of the

liner.

d. Compressor

Removal Step Picture Method of

Removal Precaution

Remove

compartment

grill

Remove

fasteners on

the grill

Compressor

Follow the

diagram to

confirm the

return line and

discharge line

of the

compressor.

Note the

discharge line

is connected

to the

condenser.

The suction

return line is

wrapped with

insulation.

HLR-118SF

Step Picture Removal method Precaution


18

Removal

of cover

for main

control

box

Remove cover for

control box.

Remove control

board

Remove the

fasteners on the

control board.

Remove the

control board

Unplug the three

cables on the

board. The board

can be removed

freely.


1、 Remove

the

support

bracket

on the

left

Open the door.

The fasteners for

the supporting

bracket can been

seen.

HYC-118/118A


19

Removal of upper

hinge.

Open the door.

Remove the

fasteners on the

bracket.

Removal of

display board

Turn the front

panel down to get

to the display

board. Remove

the fasteners and

unplug the cables.

The display board

can be removed.


20


Remove fan

guard shield

Remove shelves

and baskets

inside the unit.

Remove the

fasteners on the

fan guard.

Remove fan

motor and

mechanical

temperature

control

The fan cable is

connected

externally

through the

backwall.

Unplug the cable

outside.

Remove the fan

motor from the

front.

Temperature

sensor

location

check for the

location of the

sensor location.

Temperature

sensor is

located on the

upper part of

the interior

wall. It is

predetermined

by the interior

wall’s suction

ports.

Fan

Sealant


21

Step Pictures Method Precaution

1、 Remo

val of

back

comp

artme

nt

grill

Remove the back

grill.

2、 Com

press

or

Piping diagram of

compressor

circuit.

10. Opening packaging

Step Operation Method Note

1、 Pack

age

open

ing

Cut off the

straps and lift

the box off

the unit.

Back grilling

Packing belt


22

11. Transportation Requirements

（1） When a unit is moved, do not tilt the unit at an angle of more than 45 degree.

（2） When moving a unit, one should be caution to avoid tripping over by the unit.

（3） Do not use door handle as the pivotal point to move a unit to prevent injury.

12. Installation ambient

（1） Ambient temperature: 16 C to 32 C. The ideal ambient is 18 C to 25 C. Use an air-conditioning system if

necessary.

（2） Humidity: lower than 85%.

（3） Avoid large amount of dust.

（4） Avoid shaking and vibration.

（5） Working elevation: lower than 2000 meters.


23

Inspired living

Haier Medical & Laboratory Products Co., Ltd.

Room 403D, Brand Building, Haier Industrial Park, No.1 Haier Road

Qingdao China

Website: www.haiermedical.com

service manual - · pdf fileprecaution in installation and initial testing ... 0070301474...

Documents