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Thread: Testing pressure switches
10-11-2012, 07:55 PM #1
Testing pressure switches
Have a customer with a 25 ton water cooled chiller that wants the high and low pressure switches tested on his refrigeration equipment. The switches are the encapsulated type. I need to confirm the switches work, not just remove wires from the switch. Customer does'nt want me running the discharge pressure up and having the suction pressure drop artificially to trip the switches. Has anyone removed all the refrigerant or added tubing or small valves to isolate the switches to make this test with nitrogen?
I need to do the test every year.ENJOY THE RIDE
10-12-2012, 11:02 AM #2
Most encapsulated pressure switches are mounted on schroeder cores, not all call manufacturer to find out for sure. If they are just pop them off and test with nitro on a manifold. If they are not you may have to pull it down. I'd put them back on Schroeders so next year you don't have to pull it down.
10-12-2012, 11:16 AM #3
Whats a shroeder core? Unless you mean shrader valve core?"If anybody can draw on the power, where do we put the meter?" - JP Morgan before pulling Tesla funding
10-12-2012, 11:59 AM #4
10-12-2012, 12:53 PM #5
lolz!"If anybody can draw on the power, where do we put the meter?" - JP Morgan before pulling Tesla funding
10-12-2012, 02:43 PM #6
Do not put a high pressure safety device on a valve, and low only on a king valve, not ball style.
Would rather them be on schrader's though.
Second calling mfg for info
10-12-2012, 08:57 PM #7