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MRC DW-25YL270 Service Manual

Biomedical freezer
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Biomedical Freezer
Service Manual
Applicable product model: DW-25YL90/270
PLEASE READ THIS MANUAL CAREFULLY BEFORE OPERATION
Hagavish st. Israel 58817 Tel: 972 3 5595252, Fax: 972 3 5594529
mrc@mrclab.com
,3
MRC.3.25

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Summary of Contents for MRC DW-25YL270

  • Page 1 Biomedical Freezer Service Manual Applicable product model: DW-25YL90/270 PLEASE READ THIS MANUAL CAREFULLY BEFORE OPERATION Hagavish st. Israel 58817 Tel: 972 3 5595252, Fax: 972 3 5594529 mrc@mrclab.com MRC.3.25...

  • Page 2: Table Of Contents

    Contents I. Product Introduction ........................3 II. Main Technical Specifications......................4 III. Schematic Diagram of Refrigerant Line Flow Direction Figure ..........4 IV. Schematic Diagram of Control Electricity ................... 5 V. Distribution in Evaporator Tube Box and Relevant Dimension Parameters......5 VI.

  • Page 3: Product Introduction

    I. Product Introduction This maintenance manual is for the ultra-cryogenic refrigerated storage box produced by MRC Co., Ltd. This series has the following characteristics: 1. Temperature control mode: high precision microcomputer temperature control system with temperature sensor in the box to assure safe and stable operation;...

  • Page 4: Main Technical Specifications

    II. Main Technical Specifications Model DW-25YL90 Unit DW-25YL270 Overall dimension 700×640×1792 700×669×854 (W*D*H) Effective volume Refrigerant and R600a/97g R600a/55g filling capacity Voltage range 220-240 220-240 Rated current 1.53 0.68 Rated power Temperature ℃ -10 - -25 -10 - -25 regulation range...

  • Page 5: Schematic Diagram Of Control Electricity

    If the product is improved, the technical data and circuit diagram shall be subject to the final product nameplate and cabinet circuit label. V. Distribution in Evaporator Tube Box and Relevant Dimension Parameters DW-25YL90 DW-25YL270...

  • Page 6: Distribution Of Condenser Tubes And Relevant Dimension Parameters

    § Relevant dimension parameters Evaporator Product model Evaporator Drawing No. Evaporator (length) φ8×0.71mm DW-25YL270.3-4 DW-25YL270 φ8×0.71mm 20.5m DW-25YL270.3-5 DW-25YL90 φ8×0.71mm 14.4m DW-25YL90.3-3 VI. Distribution of Condenser Tubes and Relevant Dimension Parameters Built-in condenser and wire tube condenser...

  • Page 7: Dimension Parameters Of Capillary Tubes

    DW1968.1.2.1 VIII. Compressor Parameters and Compressor Chamber Structure DW-25YL270 compressor chamber DW-25YL270 compressor chamber is located at the bottom of the box, and the compressor is placed .at the rear DW-25YL90 compressor chamber DW-25YL90 compressor chamber is located at the bottom of the box, and the compressor is placed...

  • Page 8: Display Panel Function

    Compressor Thermal protector Starter Capacitor model model model model model QP2- ETA115L BT60-120/DRB211N61A2F 15G/QPS2- A15MG1 DW-25YL270 ETK115L BT37-120 QP2-15 BT40- QP2- DW-25YL90 HYB60MHU 120/DRB13N61A1/ZHB35- 12/B3/ZHB35- 120P15 120P15 IX. Display Panel Function 1. Control board introduction: is display window for temperature. Under normal operating conditions, the average temperature of the freezer compartment in the cabinet is displayed in units of °C;...

  • Page 9: Function Settings

    is the button for set/mute, when there is no alarm state and the key is not unlocked, press , displaying ambient temperature for 5 seconds and then restores normal display; In the unlocked state, press for 3 seconds, can enter the user menu. When buzzer alarm (including high temperature alarm, door open alarm, sensor fault alarm, etc.), in the locked state, first time press , Buzzer stops tweeting, 5 seconds after showing ambient temperature, resume normal display (The key mute is only to turn off the buzzer of this...

  • Page 10: Parameter Display

    d. Press the for more than 3 seconds, or if there is no button within 60 seconds, exit the parameter setting program. e. Parameter display. 3. Press for more than 3s, or press no key in 60S to exit the parameter setting program. 4.

  • Page 11: Factory Setting Mode

    X. Factory Setting Mode Under the unlock status, press the "enter key" with longer time to enter the factory menu (till PS2 display. If you want enter factory menu, you should input the right password of PS2 using up and down button, or you can use 99 as the PS2 password if you forget it.) Then press “enter”...

  • Page 12: Product Exploded View And Assembly

    1. Check the upper sensor connection control sensor error 2. Replace the upper sensor 1. Check the lower alarm sensor connection ambient sensor error 2. Replace the lower alarm sensor XI. Product Exploded View and Assembly Model: DW-25YL270 Color: white...
  • Page 13 1) Box and accessories Model DW-25YL270 Spare part drawing Spare part name Spare part code Freezing chamber 890234679 DW-25YL270.21.1 door foam Freezing chamber 890221013 DW-25YL270.21-1 door seal Freezing drawer 890203807 YCD-EL289.5-1 Evaporator trim 890203810 YCD-EL289.1-25 strip Refrigeration 890218935 DW-25YL270.3-4 evaporator package...
  • Page 14 Front cover 890221604 DW-25YL270.1-41 Front adjusting foot 890173290 B15171.1-51 DW-25YL450.1-37 Lower hinge 890222182 (B1) YCD-EL259.1-31 Base panel 890245277 (A1) Compressor 890241266 NUM90NA1_SF Compressor base DW-25YL270.1.1 890243617 panel assembly Compressor rear YCD-EL259.1-23 890234453 cover (A1) Control Plate 890253565 Fan motor...
  • Page 15 Model: DW-25YL90 Color: white 1) Box and accessories Model DW-25YL90 Spare part name Spare part code Spare part drawing No. Freezing chamber 890249125 DW-25YL90.21.1 door foam Evaporator trim strip 890203810 YCD-EL289.1-25 Refrigeration 890249057 DW-25YL90.3-3 evaporator package Door light switch 890211485 HYC-260L (DW1747).4- Door lock 890215610...

  • Page 16: Transportation And Installation

    Upper hinge 890040392 B1015.1-12 Freezing drawer 890203807 YCD-EL289.5-1 Compressor rear cover 890250761 DW-25YL90.1-5 Compressor base 890113218 B1446.1.7 panel assembly Lower hinge 890081186 B11121.1-5 Front adjusting foot 800002372 BCD-200A.1-2 Freezing drawer 890254418 DW-25YL90.5-2 2) Refrigeration part Anti-condensation Capillary Filter tube Refrigeration evaporator package Condenser Refrigerant direction Compressor unit...
  • Page 17  Relative humidity: ≤ 80%RH.  There is no strong vibration and corrosive gas around.  There is no mass dust.  The machine doesn’t swing or vibrate.  Altitude of the working position of the storage box: less than 2,000m. ...

  • Page 18: Common Fault Guidance

    XIII. Common Fault Guidance 1. If the product doesn’t work after power on: Ensure that the power plug and socket are connected normally; Ensure that the socket is powered on and the power supply voltage is conforming; Check the power switch on the back of the product and turn it on; Check and ensure that the electrical elements are well connected.
  • Page 19 Check whether the refrigerant leaks, eliminate the leakage point, refill the refrigerant as required and observe the effect. 8. If the display panel displays poorly or the electric appliance doesn’t work: Ensure that the connector end is not loose; open the top cover of the chassis, and check and replace the electrical elements.

This manual is also suitable for:

Dw-25yl90

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