Disassembling Qingping Air Monitor Lite CGDN1

Written By: rkuijer
  • Comments: 1
Disassembling Qingping Air Monitor Lite CGDN1

Difficulty

Moderate

Steps

7

Time Required

1 hour

Introduction

After +/- 3 years of 24/7, the fan of the particle meter has worn out. The fan is making a terrible noise.

  1. s5OvxCt2agWQPdAS
    s5OvxCt2agWQPdAS
    1vwDVvCN5IbGVnZ2
    TKLAA5SRi53LV1fM

    • When removing the screen with the suction handle and a jimmy be very careful at the right side of the screen and don't damage the connection like I did. See red circle.

    • Carefully remove the screen towards the front. The screen is clued with some tape, see the orange marker.

    • Maybe use some heat to soften the clue.

    • I used a combination of a suction pad and Jimmy.

  2. NDSiXSycPHsRETbF

    • 2 Philips screws are holding the backing plane of the screen

  3. sxnvnASMOXcfjTeR
    sxnvnASMOXcfjTeR
    AYI5TAMoOvWyZKtW
    aQIBI6TeUPgOsYbe

    • Lift the small black ledge to remove the flat cable of the screen. Orange circle

  4. FwrQ5nDVs1iKiYNb
    FwrQ5nDVs1iKiYNb
    UNZKLX4GTnvdFnBx

    • Disconnect the flat cable of the touch sensor by lifting the little black ledge, see the orange circle.

    • One screw holding the PCB, green circle

  5. E6hIDaqVpjXJOYuV
    E6hIDaqVpjXJOYuV
    sJPYiDeLsFIQKjwu

    • 4 Philips screws hold the back in place.

  6. DStquLVbwAqH5bKu

    • You can slide the complete inner parts to the front.

  7. fEtdTyTAiYggkScB
    fEtdTyTAiYggkScB
    DHwlWqYLKn32Rcc1
    LPmGDK6um5qNMXLD

    • Sensor is held by the 10 pin connector

    • Don't let the springs jump away

    • By slightly bending the cover you can lift the cover from the sensor housing

    • 5 little philips screw hold the sesnor PCB in place. To access the fan connector you have to remove the pcb

Conclusion

To reassemble your device, follow these instructions in reverse order.

Author

rkuijer

Member since: 09/06/15

145 Reputation

One comment

Thank you for the guide! The part number for a replacement sensor appears to be PMS7003. There are some minor cosmetic differences but it appears to function correctly. I would suggest conducting a calibration routine / making sure the sensor is exposed to exterior air a few times over the next few days.

ironeagl -