cps vacuum gauge

[cool_tech]

hello, i have a cps vg200 digital vacuum gauge and the readings are up the creek, it will only read properly if not connected to system. once the system is in a vacuum it just takes a lon time to register what micron it is reading. has anyone else seen or heard of this. thanks CT

[kiwireeferman]

Have you tried washing the sensor in alcohol or similar. May be oil contaminated.

[Brian_UK]

Are you sure that the vacuum you have created is low enough to register on the gauge?

Also, as stated above, make sure that the sensor is clean and the battery is good.

[cool_tech]

hey guys
cleaned out with metho pulled vac pump down to 250 microns with dirty vac oil in pump.
thanks for your help guys

[sidi]

Hi, guys
Can anyone tell where I can buy pressure gauges, vacuum pump, recovery unit,..etc.. but not too expensive for a tight budget and somewhere here in London.
Thanks

[cool_tech]

local refrigeration dealer, i paid $330 aud for the vac gauge, $460 for a 120l/min vac pump. recovery unit about $900 aud. which is pretty good price for all

[chillifive]

Hi, guys
Can anyone tell where I can buy pressure gauges, vacuum pump, recovery unit,..etc.. but not too expensive for a tight budget and somewhere here in London.
Thanks

try ebay mate, may even be cheaper from o/seas with ur exchangerate
shaun

[FreezerGeezer]

Ah ha, another G.C-er! Welcome to R-E chillifive.

Sidi, I'd try fleabay. However remember you get what you pay for!

[icecube51]

in Belgium we have a saying " goedkoop is niet altijd goeiekoop"...so translated it sounds " cheap bying isn't always best bying"

Ice

[ICE/RUNNER]

Had the same problem myself, connected up the vac pump and stared pulling a vac, next the gauge stops working. Vac pump had pulled out oil mist from the system and contaminated the sensor. Now i vac systems for an hour befor fitting the guage, no more failures.

ice/ruuner

[Brian_UK]

^ Also, vac guage shouldn't be fitted to vac pump; it should be connected directly to the system if possible.

[FreezerGeezer]

And also as far on the system from the vac pump connection as you can get.