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Thread: Macap M4D issue

  1. #1
    Coffee+carbon=heaven Mono's Avatar
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    Macap M4D issue

    Not sure what to do here but my faithful M4D seems to be having a bit of an issue which seems to be becoming more regular. It has only started in the last few months. I go to do my pre-shot stale grind purge without having altered the grind setting and at times the grinder seems to jam/lock up and the counter still runs. I then flick the off switch, back the grind setting off a bit and go again. It can even grind ok for the purge but fail to start when I'm ready to fill the PF. May be time to update but I can't really sell it the way it is. Any suggestions, do any of our sponsors handle repairs of this nature...... thoughts??

    Steve M

  2. #2
    Site Sponsor K_Bean_Coffee's Avatar
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    Hi Steve,
    This is a really weird one. Site sponsor Antony @CasaEspresso imports M4Ds. I recommend calling him.
    Cheers, Paul
    chrislng, Dimal and Casa Espresso like this.

  3. #3
    Coffee+carbon=heaven Mono's Avatar
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    Thanks for the reply Paul. At least this gives me a starting point. We are away from home for a few days so l'll give Antony a call when we get home. Thanks again

    Steve M

  4. #4
    Site Sponsor K_Bean_Coffee's Avatar
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    No worries at all Steve

  5. #5
    TC
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    Might be time for a new capacitor Steve. We/Rick can look after that for you.
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  6. #6
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    Thats interesting you post that Chris.
    I had a K3 once that had a similar or same characteristic.

    I was going to post that here for Mono - however I had no explanation other than the
    experience that ... on this particualr K3 to match the grind to my then machine (BZ99)
    was like a Hair Trigger.. ..
    Either it was too course a grind and then even to virtually just breath on the
    adjustment ring (to a finer grind setting) would result in a lock up from the next shot.

    So technically speaking ...would this be that the highly inconsistent grind is a result of ...
    A/ variance in rpm speed the motor would now produce ( either free wheel or under load
    and /or
    B/ variance of the torque (turning pressure) that the motor could now produce ( as a result of the dickie capacitator) ?

    * Yes I can now confirm too all and sundry that I possess next to nil Electrical Mechanical Engineering knowledge!
    ** Are you there Mal? This is custom made for you to hop in with an over the net holiday tuition session

  7. #7
    Mal Dimal's Avatar
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    I agree with Chris...

    Certainly pointing towards a dodgy Start/Run capacitor.
    Inexpensive and quickly replaced...

    Mal.
    WME likes this.

  8. #8
    Coffee+carbon=heaven Mono's Avatar
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    Thanks Mal. Plan to get it organised once we get back home in a few days.
    Steve M

  9. #9
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    Hi Steve,
    Mine has done the same a couple of times (6 yrs old) I removed and thoroughly cleaned the burrs, there was a lot of very compacted grounds under both (hadn't gone that far before) and touch wood it hasn't happened again (2 months). Might be worth a try, and it can't do any harm. You may need an extra pair of hands to hold things while you loosen the screws, they are in tight!
    Cheers
    Caryn

  10. #10
    Coffee+carbon=heaven Mono's Avatar
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    Thanks Caryn, I pull mine apart and give it a clean 2 or 3 times a year. I "think" I have done it since it started playing up. As you say no harm in checking it out. In regards to holding things while the screws are undone, just use an open ended spanner to hold the motor shaft from turning. Works a treat and makes it a one person task.

    Steve M

  11. #11
    Senior Member
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    Simples! Should have asked the engineer for help, not the hubby ��
    K_Bean_Coffee likes this.

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