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    Geared pump
    by Newby7 ๐Ÿ‡จ๐Ÿ‡ฆ ( Sub-Lieutenant)
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    7 Posts 6 Replies 1 Photo 9 Likes
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    Newby7
    Sub-Lieutenant
    ๐Ÿ“ Geared pump
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    Country: ๐Ÿ‡จ๐Ÿ‡ฆ Canada
    Online: 29 minutes ago
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    Thanks Doug
    1
    RNinMunich
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    ๐Ÿ“ Geared pump
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    Country: ๐Ÿ‡ฉ๐Ÿ‡ช Germany
    Online: 14 hours ago
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    OK. Thanks Rick๐Ÿ‘
    Then what I wrote below should apply๐Ÿ˜Š
    Cheers, Doug๐Ÿ˜Ž
    1
    Young at heart ๐Ÿ˜‰ Slightly older in other places.;-/ Cheers Doug
    Newby7
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    ๐Ÿ“ Geared pump
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    Country: ๐Ÿ‡จ๐Ÿ‡ฆ Canada
    Online: 29 minutes ago
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    Hi Doug
    The pump #is 1952 with 12 volt motor..
    Rick
    1
    RNinMunich
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    ๐Ÿ“ Geared pump
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    Country: ๐Ÿ‡ฉ๐Ÿ‡ช Germany
    Online: 14 hours ago
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    Glad to hear that Rick๐Ÿ‘
    Can you give me the pump Graupner part number (four digits?) and/or post a scan/photo of the instructions - just to make sure๐Ÿ˜‰
    Cheers, Doug ๐Ÿ˜Ž
    1
    Young at heart ๐Ÿ˜‰ Slightly older in other places.;-/ Cheers Doug
    Newby7
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    ๐Ÿ“ Geared pump
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    Country: ๐Ÿ‡จ๐Ÿ‡ฆ Canada
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    Thank Doug that helps .
    Rick
    3
    RNinMunich
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    ๐Ÿ“ Geared pump
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    Country: ๐Ÿ‡ฉ๐Ÿ‡ช Germany
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    Hi Rick,
    Which pump is it?
    There are several Graupner Geared pumps with different arrangements.
    Generally though, geared pumps are self-priming and reversible.
    So shove on a couple of lengths of pipe, connect a battery and try a test with a bowl of water.

    Suppression:
    The pumps use brushed motors (usually ~360-380 size) so they need suppression of brush sparks to reduce potential RF interference.
    You don't need to buy an expensive filter from Graupner.
    Probably not available anymore anyway.
    All you need are 3 capacitors; 2 x 10nF (=0.1ยตF) and 1x47nF (=0.47ยตF), connected as shown in the attached pic. The numbers in brackets are the markings on the capacitors.
    Correct type is flat ceramic.
    Many model suppliers sell Suppression Sets of the three capacitors, e.g. Krick.
    DO NOT USE ELECTROLYTIC CAPACITORS, i.e. marked with + and - leads.
    They can go 'POP' ๐Ÿ’ฅ if reverse connected๐Ÿ˜ฎ
    Cheers, Doug ๐Ÿ˜Ž
    2
    Young at heart ๐Ÿ˜‰ Slightly older in other places.;-/ Cheers Doug
    Newby7
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    ๐Ÿ“ Geared pump
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    Country: ๐Ÿ‡จ๐Ÿ‡ฆ Canada
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    Going threw some box's cleaning out I found a Graupner pump after reading the instruction's hose connection it said B is for inlet and D is for outlet but I don't see those letters on the pump any one used this pump know which one is which. The instructions also call for a suppressor filter part #3361 to use this pump will I need the suppressor filter .
    Rick



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