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View Full Version : Operating parameters of McQuay Air Cooled Chiller McEnergy 143.2 HAST



ishtiaq ahmad
01-03-2013, 09:40 AM
Kindly advise me about the following operating parameters of subject chiller at 100% load.Micro Tech II c plus controller is available with the chiller

1 Evaporator pressure/suction pressure
2 Evaporating Temperature
3 condensing pressure/Discharge pressure
4 condensing Temperature
5 Discharge Temperature
6 Discharge Super heat
7 oil pressure
8 Evaporator inlet pressure
9 Evaporator outlet pressure

An early reply will be highly appreciated

ishtiaq ahmad
05-03-2013, 06:44 AM
I am a new guy in A/C field. I need advice of my fellow members regarding the above mail. Kindly help me by replying to my above mail.

Brian_UK
05-03-2013, 11:18 PM
Without knowing the refrigerant or design conditions your question is impossible to answer.

Check with the manufacturer of the equipment or take running readings of the machine.

ishtiaq ahmad
06-03-2013, 06:53 AM
The Refrigerant is R-134A. Ambient temperature is 40 degree centigerade.

ishtiaq ahmad
08-03-2013, 09:31 AM
Would someone help me by providing the information about operating parameters of McEnergy 143.2 HA-ST Air-Cooled Screw Chiller (McQuay) at 100% load as McQuay is not responding to my query in this regard. The refrigerant is R134-A and Ambient Temperature is 40 deg.cent.

GHAZ
08-03-2013, 04:40 PM
Hi whats your water temp on and off

ishtiaq ahmad
09-03-2013, 04:46 AM
Entering water Temperature(EWT) = 10.7 DEG C
Leaving water Temperature(LWT) = 8.00 DEG C

GHAZ
09-03-2013, 01:04 PM
Hi from my experiance i would say 3bar suction pressure.10c temp. Discharge about 14bar. Suction superheat 5 to 6 c.evaporater water pressure 2bar. Hp 300psi. Lp 15 psi ccompressor running 150 to 200 amps depends on motor size. fans about 2 amps

ishtiaq ahmad
10-03-2013, 02:49 PM
We have R-134a Refrigerant in our MC-Energy 143.2 HA-ST Air cooled Mcquay Screw chiller. kindly advise whether the operating parameters mentioned in above reply of Mr Ghaz dated 8March 6.04 pm are for Air cooled screw chiller with R-134a Refrigerant.whether HP 310 PSI and L.P 15PSI are the High&low pressure cut-outs for Aircooled screw chiller with R-134a

GHAZ
10-03-2013, 04:26 PM
Yes they are cut out safety

RusBuka
11-05-2013, 10:22 AM
Have McPower 300.2
Anyone have manuals for McQuay one screw compressor?

Ramzan
18-05-2013, 11:35 AM
Dear Ishtiaq, Problem is solved or your are still facing issue please write me your cell contact. Might be i could help you out.
Regards,
Ramzan.