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OK, now I am really pp'd. when I first tried to post this thread I couldn't because I was told I was not logged in, although I was. I copied the text, logged in and copied the text into a new thread...

Now that Hades has arrived and OT is abundant I am ready to get a good digital manifold and have narrowed the field down to the two above candidates and have several questions about them.

From...

JWB: You can easily buy parts on the internet; you probably don't need to send it off. There is maintenance kit that has some red balls, filter tips, rubber tips, etc. for around $30. Be sure you...

@ jim bergmann: Thanks for that summary. You defined the differences that make the Testo 510 what it is very well and I appreciate the information. I did not understand before why it is so highly...

NCHVAC: You will find that among experienced commercial mechanics the most popular units are the H-10, D-Tek Select and the Tif ZX-1. Of these the H-10 is the most preferred with the other two about...

OK, here's the rundown.

The original was the H-10A first introduced if my memory serves me correctly in 1965, the same year I graduated from high school, by GE. So far as I know it was the first...

OK, for the H-10G: First, did you read the manual. You must read the manual. If you don't have one, download it from bacharach.com.

Second, did you check the heater sensitivity adjustment? This...

This has been a very informative thread. I can only second everything said. Probably 90% of good evacuation is in technique and equipment used, not the pump itself. I too have a homemade brass...

And in the interest of full disclosure neither I nor any member of my family works for Makita nor to the best of my knowledge owns any stock in Makita. I just did my homework before buying.

Makita, 18V Li-on. No question. I have a full set of them, including the bandsaw and sds hammerdrill. They all work great. The bandsaw cuts just as well as the Milwaukee corded bandsaw. We have cut...

From what commando and cjjjr said, it may be good enough for a temporary fix until you can make a permanent fix. And from what cjjjr said, you might just want to cut that piece of pipe out when you...

First off, some general observations.

There seems to an assumption running through this thread that there is ONE leak detector which is the best and the only one you need. Wrong! One of the...

The basic Ohm's law formulas are the same for 3 phase, except you multiply or divide the result by the sq. root of 3 = 1.73205, or 1.73 for all practical purposes.

P=IE*1.73

I=P/E/1.73 (power...

OK, getting PO'd here. In trying to reply to this thread tried to add degree symbol using alt+176 and got bounced all the way back to home! Anybody can give me some help here? How do you add symbols...

What size is the drain fitting on the unit? That is the pipe size you need going out of that unit, with the appropriate trap, if applicable, for that unit. The Installation manual should tell you...

Right on, freonguy! when you have to move acids there is no such thing as cheap and reliable. Not only must it be made to withstand the effects of acids over time, it must be made of the proper...

You don't give the manufacturer of the unit. That's who you would normally go to for this part. I had a Trane 10T with rotolocks that one of them twisted the pipe taking it loose. I called our AmStd...

Actually, you want to check the primary tap on the transformer; if set to the higer tap (240V) and you have a 208 supply the output will be too low, and this will cause trouble. Just to be sure this...

Yeah, don't remember any alarms going that high, but you need not only the full model no., but the serial as well to be sure you have the right manual. The codes changed from time to time in that...

Yes I have, but it has been a long time. I think you are working on one of the old GE style heat pumps with a complicated control wiring scheme, but since you didn't include the full model and serial...