Emergency Situation! Clivet(VR-CW) Precision AC!

[sbkvelocity]

Hello guys! em in an emergency situation, I have to rectify a clivet Precision ac Model VR CW, its a chilled water system. It's showing differential pressure probe faulty, when checked, it was a false alarm. Now, since I am new to these machines, and I also don't have any manual. Can anyone please give the user manual, or guide me to reset the alarm, as to change the settings, password is required. I am in urgent need, so kindly help me asap.

[nike123]

http://web.clivet.it/pdf/M64H40E4.zip

[sbkvelocity]

Thanks a lot for your input, but the problem is that I have Chilled Water System instead of DX, are the alarm codes same for the DX System and CW system? Can you please provide me the manual for VR-CW model? It will be a great help as I need to rectify the problem as soon as possible as it is serving a critical area!

[nike123]

Thanks a lot for your input, but the problem is that I have Chilled Water System instead of DX, are the alarm codes same for the DX System and CW system? Can you please provide me the manual for VR-CW model? It will be a great help as I need to rectify the problem as soon as possible as it is serving a critical area!


You should not change parameters or setings. You should find cause of tripping (usually clogged water filter and lack of water in system).

No, there is no documentation of CW system at Clivet page, (http://portal.clivet.it/Navigator/navigator.jsp?v_lingua=2) but controller is same and reset procedure should be the same!

Why you think that it is false alarm? Did you checked pressure at which differential pressure switch at water side is acting?


2.2.4 - Setting the chilled water-side differential pressure
switch.
2.2.4.1 - Close the ball valve fitted downstream of the
exchanger to trip the pressure switch.
2.2.4.2 - Using the pressure gauges “M” installed in the
system, obtain the difference between the reading on the
exchanger inlet pressure gauge and the reading on the
exchanger outlet pressure gauge.
2.2.4.3 - Note the pressure at which the pressure switch
was tripped and check that it falls in a range of values
close to 13kPa.

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