Plasma table recommendations for air drier system

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03 Aug 2017 01:16 #96953 by kb8wmc
kb8wmc created the topic: Plasma table recommendations for air drier system
Looking for suggestions for either DIY or OEM air drying systems for plasma machine using Hypertherm 45 ?

Second question: What is the preferred method for grounding the material to be cut? Is it advisable to use the bed grate to attach a grounding clamp or directly to material to be cut?
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03 Aug 2017 04:04 #96959 by islander261
islander261 replied the topic: Plasma table recommendations for air drier system
Hello

The method(s) you use for air drying depend on the temperature and relative humidity of the air supply to your compressor. My compressor and table are 100m from the sea in a cool wet climate. I have an automatic drain valve on the compressor receiver, cooling loop with drain legs out of copper tubing, usual air filter separator, refrigerated air dryer and desiccant air dryer. I get no moisture or oil in the filter on the plasma power supply. This is massive over kill if you don't live in hot humid place.

You should have a star ground point on your table chassis that the work lead from your plasma power supply is connected to. This point should have a lead that connects to your slats and a lead that has a clamp to attach to your work piece. Optionally if you have a table earth grounding rod it should also connect to the star point.

John
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03 Aug 2017 08:30 #96965 by rodw
rodw replied the topic: Plasma table recommendations for air drier system
Here's what I've done (still to mount up) with a similar sized Everlast 50 amp plasma


I purchased the silver 3 stage filter from eBay: Filter/Regulator, Coalescing filter, dessicant module. Finally, a Motorguard "toilet roll" filter which I see on just about every plasma cutter in service. I got it here www.machineryhouse.com.au/C492 where it is sold as a plasma filter. I am currently testing my machine and am using a cheap direct drive compressor because the table is too far away from my workshop to use my belt driven compressor. I will say the air is very wet and I'm pleased I have the dessicant as it changed colour slightly on the first test run. I would not use one of these compressors.
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03 Aug 2017 08:42 #96968 by tecno
tecno replied the topic: Plasma table recommendations for air drier system
Very interesting "toilet roll" filter, never seen this type of filter before.

Now added to my wish list for future plasma table build. Have been collecting parts for a while, problem I have is lack of space so I will have to build this modular so it can be setup when needed.
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