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Electrically Operated Roller Shutter Door Fault.

Zoomup

The customer reports that the roller shutter door closes on button but fails to open properly. He had to use the manual handle to open the door. The door seems NOT to be mechanically seized.

The control model is a Teleco TVPRP868N09. It has been working for me on a sporadic basis. It always seems to close the door but stutters or cuts out on opening. The operation is not reliable. I suspected the limit switches but they seem to be working o.k. if they decide to.

I then suspected the motor overheat cut-out embedded in the motor. The motor is inaccessible as it is contained in the roller shutters' shaft. I suspect that I ran the motor too long and it has a short duty cycle when testing it, and it overheated.

Has anyone any experience of this fault and how to rectify it please?

Z.

  • 0

    Hi Zoom, when I had a similar problem the manufacturer said that the motor was at end of life and drawing more current than it should. This causes the overload sensor to cut out. If the door opens fully when you give it a helping hand then your problem sounds similar.

    There are two(?) banks of dip switches in the control unit so if you have access to the installation booklet you will be able to identify the one that turns the overload sensor off.

    Obviously this was ok for my own place but might not be so for a customer!

    But if you turn it off and normal operation resumes you have your answer. New motor!

    BTW if you decide to change the motor make sure you have full instructions as the door has a big pre tensioned spring which you need to release in a controlled manner.

  • 0

    Seconded on stiff motor and current limit - not seen this model but something like that is common - depending on the balance of door weight and the counter spring, to struggle one way and not the other is typical, before it stops dead.

    from https://www.manualslib.com/manual/1909670/Teleco-Automation-Tvprp868n09.html?page=15#manual

    suggests that you can disable the fine current limit as a diagnostic option.

    At some point though, if it then works, either something needs greasing or the motor is on the way out.

  • 0 in reply to mapj1

    Thanks Grumpy and Mike.

    Z.

  • 0

    Would a weakened/slipped counter spring give similar symptoms - effectively making the door feel heavier to the motor?

      - Andy.

  • 0 in reply to AJJewsbury

    It probably would but the roller shutter seems to raise and lower easily by hand or by the manual handle. There is no particular additional weight that I can detect.

    Z.

  • 0 in reply to Zoomup

    I don't  think that there is a strong spring involved. The door is controlled by one of these.

    Roller Garage Door Motor replacement, "How to Repair Electric Door" - Bing video

    Z.

  • 0 in reply to Zoomup

    Update. After I sprayed some lubrication onto the end bearing and motor end of the shaft the door seems now to be working o.k. The owner said that it worked for him recently too. Again today it worked full travel up and down perfectly. It gets little use, perhaps once a week so it may have been suffering from sticktion. 

    Z.

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