Announcement

Collapse
No announcement yet.

Lelit Combi /Anita tripping PCD PCD and pump struggling when hot

Collapse
X
 
  • Filter
  • Time
  • Show
Clear All
new posts

  • Lelit Combi /Anita tripping PCD PCD and pump struggling when hot

    Hi All I have a Lelit Combi, that is about 5 years old, used daily and pretty well serviced,
    it has recently started struggling to actually " pump" when the pump is switched on, but eventually gets going
    and works fine,
    it only even gets " stuck "if it been sitting at full temp for a while,
    ,
    always flows straight away when it cold to prime the system
    in last few weeks it occasionally trips the PCD for the circuit, when under load ( pumping to brew).
    I took it to local coffee machine service, however it didn't do any of the strange things while they had it.

    any ideas?
    should I change pump? it has a ULKA type vibratory pump

    Cheers for any ideas





  • #2
    Group head blocked with grinds above the screen?

    Comment


    • #3
      Tripping power means it's electrical. If you haven't already, then I'd thoroughly descale and backflush with espresso cleaner.

      Is the OPV blocked? I assume it's not leaking.

      If that doesn't fix then the pump is a possibility. Easy to replace if you can gain access and fairly cheap.

      Has it ever tripped with no pump running?


      Comment


      • #4
        Hows it look under the covers? Water leaks or corrosion evident?

        Comment


        • #5
          Hi,
          cheers for the replies
          I happened to have a pump , as I bought it a while back ,
          so changed that over,
          (which seemed rather easy, was expecting a swearing fest)
          certainly pumps easier but still trips, under load about 20 seconds into the brew
          I need to run it with the cover off and see if there is any water leaking anywhere
          I have descaled and back flushed,
          the OPV seems to work fine when using a blind filter etc.
          the only corrosion was on to boiler inlet or outlet,
          ( bloody photos didnt work so I will take them again today,) but to me did seem like it would be a cause of this fault

          Comment


          • #6
            It has not tripped while idle,
            I left it on fro an hour or so and it was fine,
            then brewed and it tripped

            Comment


            • #7
              Couple of thoughts on what it could be;

              1) Faulty/overloaded power circuit which is tripping only when under load. The RCD breaker could actually be faulty and is tripping at lower than its rated amperage - have you tested it on another circuit & power outlet?
              2) Solenoid - which is causing a ground fault tripping leaking under heat/pressure
              3) Power switch - I have had machines with faulty power switches which caused intermittent faults

              Comment


              • #8
                Hi,
                we only have one outlet circuit, so its one the same RCD, we did have a RCD for hot water die a year or so ago, so could be that
                we do have a 15A circuit in the garage, will try that.
                I don't use the power switch, we turn it on at the power point, so the power switch is always "on" as its in a location that is to hard to access

                Comment


                • #9
                  Pics are of the inside of the machine, fair amount of mineralClick image for larger version

Name:	20220811_082706.jpg
Views:	101
Size:	159.9 KB
ID:	924319 buildup on the boiler intake

                  Comment


                  • #10
                    So I ran it on a 15A circuit outside, didnt trip circuit, but pumped about 2/3 of a shot, then pressure gauge dropped suddenly to zero .
                    pump can still pump to the water wand but wont pump thru the group head....
                    could it be opv?

                    Comment

                    Working...
                    X