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  1. #1
    Join Date
    Feb 2015
    Location
    India
    Posts
    37
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    Indoor unit's impeller/motor coupling bolt head broken



    Dear all,
    In my absence my Air con(1Ton)was serviced, after four months when I opened the indoor unit, found that the motor-impeller coupling bolt head has broken. I sprayed WD-40 to ease it up but no use. Due to this hurdle the vanes of the impeller can't be cleaned properly. Can someone give a practical solution to this?


    I maintain, everything I have, myself.

  2. #2
    Join Date
    Aug 2006
    Location
    england
    Age
    43
    Posts
    3,781
    Rep Power
    38

    Re: Indoor unit's impeller/motor coupling bolt head broken

    Has the bolt head definitely broken off, many fans are held on with grub screws which look a bit like a bolt with a missing head.
    Could you clean the fan with compressed air in place instead of removing it?
    Mostly found in Oxfordshire, UK :)

  3. #3
    Join Date
    Feb 2015
    Location
    India
    Posts
    37
    Rep Power
    0

    Re: Indoor unit's impeller/motor coupling bolt head broken

    @monkey spanners I had dismantled the impeller of this hitachi indoor unit. There is no grub screw. As per your advice I will use the compressed air and nylon brush to remove the dust accumulated on the vanes.
    I maintain, everything I have, myself.

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