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Compressor for vehicle brake systems

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  • #16
    While it seems like none of us really do this, the idea to save money makes sense. I can't see a problem with failing pressure regulators as the individual "fill line" to the service air system would be regulated at the source, then again regulated at the apparatus? The air drying is a problem for us on our service air, likely due to the amount of piping overhead and the build-up of condensation there and at the tank, issues/equipment that our SCBA compressor does not have. It would seem to come to the expense of maintaining SCBA compressor filters if the unit ran far more often. Quarterly/semi-annual air test may require filters be changed more often, but as a previous poster noted, our compressor tech's say ours needs to run often to maximize it's life, not less.

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    • #17
      What about the on board compressor on the apparatus? You have a shore line going into the quick disconnect, it should be able to keep the compressor going to keep the air pressure up on the ride.

      If you are losing air that much where you need to buy a shop compressor to keep the air up, you need to have the truck serviced.
      Stay Safe and Well Out There....

      Always remembering 9-11-2001 and 343+ Brothers

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      • #18
        Originally posted by CaptOldTimer View Post
        What about the on board compressor on the apparatus? You have a shore line going into the quick disconnect, it should be able to keep the compressor going to keep the air pressure up on the ride.

        If you are losing air that much where you need to buy a shop compressor to keep the air up, you need to have the truck serviced.
        Not every Kussmaul system has an air compressor... found that out the hard way.
        ~Drew
        Firefighter/EMT/Technical Rescue
        USAR TF Rescue Specialist

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        • #19
          Originally posted by CaptOldTimer View Post
          What about the on board compressor on the apparatus? You have a shore line going into the quick disconnect, it should be able to keep the compressor going to keep the air pressure up on the ride.

          If you are losing air that much where you need to buy a shop compressor to keep the air up, you need to have the truck serviced.
          Our Oshkosh Stryker does not have an onboard electric compressor, only the engine driven one. It doesn't leak down, but in the interest of safety we keep it hooked to air and power quick disconnects.

          On a separate note, do many apparatus actually have onboard compressors? At the department I volunteer with, none of the trucks do and all are hooked to shore air and power.

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          • #20
            Of the 4 trucks in our station that have air brakes only one has an on board compressor. A 1990, 1998, 2002, 2010.

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            • #21
              On-board compressors need to be called out specifically in the spec's, otherwise you will usually just end up with a battery charger. I believe Kussmaul's line is called "Pump & Charge". I've heard good things about them, but have never used one myself. But, converting all of your apparatus to these systems may (read, most likely) will cost much more than the station compressor and respective plumbing to the trucks.

              I do agree with everyone else... not a good idea to use the SCBA compressor to keep the truck charged.
              TruckCommittee.com

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              • #22
                Originally posted by Tim1118 View Post
                On-board compressors need to be called out specifically in the spec's, otherwise you will usually just end up with a battery charger. I believe Kussmaul's line is called "Pump & Charge". I've heard good things about them, but have never used one myself. But, converting all of your apparatus to these systems may (read, most likely) will cost much more than the station compressor and respective plumbing to the trucks.

                I do agree with everyone else... not a good idea to use the SCBA compressor to keep the truck charged.

                Ours were spec'd out with onboard compressors. The Quantams need this feature with the cab steps folding up and down with the door being open or closed.
                Stay Safe and Well Out There....

                Always remembering 9-11-2001 and 343+ Brothers

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