So I just got my leluv pump in and I'm not sure how to read the gauge. It has mm hg in 100 and up and then it has mm hg from 0 to -5 to -10 and so on. When people say 4 to 5 hg is that 400 - 500 hg? Sorry if this is a dumb question I just need.to know. I tested it out and I went up to -5 hg and it didn't expand so I'm thinking it's 400-500.
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Originally posted by chazz View PostI just bought a new Kaplan pump but the gauge doesnt start at the 0 it starts at the 2 hg. It goes up from there but never goes below 2. Looks like i need to return it. The gauge goes from 0 to -30. Any thoughts?
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Where ever the needle on the gauge sits, just consider that your ZERO. Many of the brake bleeder type hand pumps have gauges that have a spring loaded rewind and it doesn't take much to bump the needle off the zero. That doesn't mean that you still can't use it or rely on the vacuum pressure reading to be accurate. It just means you need to re-calibrate your starting point at where the needle sits and consider that your new ZERO. So if it sits at 5 Hg then when you go up to 15 Hg you are technically only using 10 Hg of pressure (15 - 5 = 10). No need to send it back.-Foldus,
L.G. Hanger,-Owner/Licensed Master Machinist
www.lghangerllc.com
PEGym members get $10 off! Coupon Code PEGYM
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