Do they pump it up and wait a while?

Discussion in 'Tech/Mech General' started by Sidney, Mar 16, 2014.

  1. Sidney

    Sidney Funster

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    MH is off for its 1st annual habitation check this week.

    I saw an episode on the caravan channel where the engineer:

    1, disconnected the gas bottle

    2, put a pump on the regulator

    3, pressurised the system with air

    4, came back later and checked the pressure was holding


    Are they still likely to do this on my MH which has a Gaslow refillable cylinder?
     
  2. Wildman

    Wildman Read Only Funster

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    They will probably fit a service point if one is not already fitted to allow the test to be carried out. The gaslow will make no difference.
     
  3. dave newell lvs

    dave newell lvs Trader-Vehicle Services

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    Standard gas "tightness" test is to pressurise whole system to five times working pressure, for modern motorhomes with a fixed bulkhead 30 mbar reg that's 150mbar! Five minutes "normalising" time then top up if necessary to 150mbar then it has to hold for five minutes. Don't panic about being tested at 5 times operating pressure though, 150mbar is about 2.5psi, yes two point five pounds per square inch. Any outfit that doesn't carry out a "tightness test" during a hab inspection is not doing a hab inspection.

    D.
     
  4. mitzimad

    mitzimad Funster

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    is there any permissable drop with lpg ?
     
  5. Sidney

    Sidney Funster

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    Dave the minute this MH doesn't HAVE to go to Swift dealer I'll be on your doorstep. I suspect I'll be paying for a rubber stamp by a Swift dealer who "won't touch any warranty issues".
     
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  6. dave newell lvs

    dave newell lvs Trader-Vehicle Services

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    5 mbar after the second five minute period is acceptable. Truth is I have almost never come across a system that lost more than 1mbar after the 2nd five minute period unless there was a leak somewhere.

    D.
     
  7. Sidney

    Sidney Funster

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    Checked the manual for the Truma MonoControl CS (fixed regulator) and it has a test connection built in. So they should not need to disconnect anything on the high pressure or low pressure parts of the system.
     
  8. durhamahoy

    durhamahoy Funster

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    Do they pump it up and wait a while?

    Ooh Matron

    :Rofl1:

    Steve
     
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