2004 cd 74 roller cooling

Discussion in 'Heidelberg Printing Presses' started by jmt, Jun 15, 2017.

  1. jmt

    jmt Senior Member

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    Any ideas why only 2 units would not be cooled. I have check the lines to the rollers and there is coolent getting to them .
     
  2. exheidmech

    exheidmech Senior Member

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    To troubleshoot this issue its best to use an IR temperature gun. Check the temperature of the rotary union on the operator side and compare that with the temperature of the distributor roller its attached to after you have run a few thousand sheets. Rotary union and roller should be within 2-3 degrees of each other. Than compare these results with a known good unit. You will find your issue in short time with this method.
     
  3. CHOCK

    CHOCK Senior Member

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    Hi sir:
    I hope you are well
    Need to know what exactly 1) Machine is 2) What Aux Devices is coming with the Machine Heidelberg ?
    After that i can guide you for fix it.
    Let me know.
    Blessing
    superchock@yandex.com
     
  4. CHOCK

    CHOCK Senior Member

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  5. jmt

    jmt Senior Member

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    2004 cd 74-6+l-f with a technotrans America beta c180 sc combination unit.
     
  6. CHOCK

    CHOCK Senior Member

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    oK sir
    last favor Need serial number of technotran,
    can you send me to my email please
    superchock@yandex.com
     
  7. jmt

    jmt Senior Member

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    also looking for the charge for the compressor for roller cooling.
     
  8. CHOCK

    CHOCK Senior Member

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    Good day sir:
    I hope you are well in union with his family.
    Please we will intent to fix it his problem
    As you know your systems has 2 function circuit D+T :We must concentrate in circuit T(Temperature) this has 2 main function:

    1)Cooling while the press is running 2)During operation a constant quantity of water is fed through the ink rollers.
    We are suppoosing too: that all controls are o.k working in the machine
    However need question from routine of maintenance basic equipment for Refrigeration +Temperature Unit :
    Test the following carefully:
    a)Did you check your filter/strainer (clean or replace)?b) level float switch( clean or repair)?c)
    aircooled
    condenser or
    fluid cooler)?Test for contamination or Clean it d)Clean the cooling fins too! e)Chilling medium ?( clean it filter ).

    Control Unit Test:

    1) Pump+Filter+level float switch+tank= Clean it!!!

    Of course tight any hoses, or see if there are Leak,clamp faulty.

    Ok after you did carefully, you must see if there are any changes in the 2 units that you have problem
    Let me know any changes or result ASAP.
    Otherwise, we must go more Deep.
    Thank you in advance, sincerely.
    Blessing
    superchock@yandex.com
     
  9. jmt

    jmt Senior Member

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    ty for the reply chock . we have check lines and flilter and hoses as per are march maintenance before the warm months hit . all check out fine . filter was a little dirty we cleaned it and where low on refrigerant had it top up and check by a refrigeration guy all checks out at the unit just units 3 and unit 6 are the only one with probs. waiting for some down time to check with temp prob as per exheidmach suggested.
     
  10. CHOCK

    CHOCK Senior Member

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    Hi sir
    I hope you are well
    After you explain me what did you test it and did maintenance the problem Arise t:
    1)Insufficient temperature control water flow. a) Valve Closed for the circuit ; Open
    b)Not enough pressure. =
    Adjust the pressure through the shut-off
    valve in the temperature control water
    outlet.
    c)Low water level.=
    1)Top up with water.
    2)Acknowledge fault on the control unit.
    d)Frequent lack of water= System leaks. Check / seal leaks.
    Let me know for more Deep
    Regards
    superchock@yandex.com
     

  11. CHOCK

    CHOCK Senior Member

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