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  1. weldon

    Burning contactors

    I have an 36 volt electrical Hyster standup lift. The lift has two elctric motors, one for movement of the lift the other is movement of the mast. The contactors for the mast motor completely burn out in 7 - 10 days. I am unable to find a reason for this. There is minimal arcing on the break of...
  2. weldon

    Furnace flame out

    I had a call on a gaspak at a lake house. The unit faces the lake. After a night of 35 mph sustained winds and high gusts the unit had a flame out. The unit is spark ignited with a combustion fan. Upon arrival combustion fan was running but burners were not. I checked all controls and everything...
  3. weldon

    Heat build up in printing plant

    Can anyone tell me where to print out information about ventilating excessive heat build up due to numerous machines running in an enclosed environment? I am presently trying to inform managment of the need to pull heat away from several presses, die cutters and gluers and send it to the...
  4. weldon

    Tansformer power usage

    Thanks for all the information and input. It doen't sound like turning off the idle transformers would be much of a savings and may even cause extra wear. The plant has cut the budget as much as possilble without laying anyone off. This is the main reason I am looking into saving on the power...
  5. weldon

    Tansformer power usage

    I'm in maintenance at a graphic printing plant. Currently I am trying to find ways to lower the electrical bill. We have 14 480-volt transformers in the plant, they run constantly even when the machinery is not running. The units are idle two days every weekend and three full weeks a year. Is...
  6. weldon

    Wiring diagram

    The units at my plant have had switches by passed relays staight wired and numerous other problems. Most units are Trane American Standard and Carrier. The unit I am trying to straighten out now is an Amana model ARHF36U01B, the indoor coil needs to be replaced but the plant is low on funds. I...
  7. weldon

    Scale build up on coils, causing heating problems?

    I service the units at a printing company. The indoor coils on several of the smaller units have scale and corrosion build up on them that I have been unable to remove through cleaning. I have saturated the coils with cleaner, brushed the fins, cleaned them with a high amount of water back...

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