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Lelit PL41 - Pump failure?

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  • WWWifi
    replied
    This is not necessarily your pump. You will have to open your machine up and do a continuity test (see below linked video at about 1 minute in) on the pump's terminals/contacts, in both directions, to determine if the pump has indeed failed (does not need to be removed but make sure the machine is UNPLUGGED please). It is entirely possible there is another cause and you might be buying a spare pump (which might not ever be a bad thing )

    I believe your version of the LELITPL41 may have a Pump Thermister, which if over heated may cause an open or shorted circuit that will cause the pump to not be energized. The part number should be 9600056 and you can likely find it at a company like 1st Line Equipment . . . here is what it will look like if you open your machine up and look for it (again, you can test the two wires for continuity and see if the thermistor has failed but be sure the machine is UNPLUGGED please). . .
    Credit to 1st-Line Equipment - LeLit P41LEM Pump Thermistor

    This could also be a component within the pump, a spring for example that has failed. Removing the pump and disassembling it will reveal any sources of this fault.

    From your excellent video, which you kindly provided the link to in your original posting, the pump is not being energized. The question is why is your pump not be energized? It could be a shorted wire, a connection that degraded, or a loose wire as etc., or indeed the pump itself (the coil or diode etc.). A good approach is to visually inspect the pump, look for and test any thermal components for continuity (such as like the thermistor pictured above), test the pump itself for continuity in both directions, and look at all its electrical connections (including as connected throughout the machine to switches, wires, etc). and internal components. It does appear your solenoid is opening as some water dribbles out when you throw the switch.

    Here's an excellent primer on Vibratory Pumps, including testing them, and the internal components:
    Last edited by WWWifi; 21 March 2022, 04:10 PM.

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  • kevviek
    replied
    call Jet Black Espresso, they are distributors and know the machines very well. A pump is not hard to replace yourself, I don't know how much they are but a Gaggia equivalent is around $30.

    https://m.youtube.com/watch?v=-1QQ9r6AJvM

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  • rpgilbert
    started a topic Lelit PL41 - Pump failure?

    Lelit PL41 - Pump failure?

    Hi CS,

    My trusty Lelit PL41 that I purchased from a user on here many years ago has failed on me and many, many good years of service. I believe it is potentially a pump failure based on my cursory research of the model. Have included a link to a video of the pump in action below.

    I am wondering how much it may cost to have the pump replaced? I'm also considering it worth stepping up to a HX machine (have my sights set on a Profitec Pro 500, albeit something more budget friendly may have to suffice).

    Link to video of the pump in action: <https://streamable.com/u3mz7z>
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