Superheat in McQuay chiller (DX System)

[rishab1508]

Hi..

Can anybody suggest that what suction superheat should be maintain in McQuay DX chiller Model No-WHS 215.2 from wuhan.

We are facing frequently low suction pressure alarm. Even we have done pressure and vacuum test 2-3 times. and charged the refrigerant by weight.

pressure senser also checked and found ok. Machine is having danfoss PHT 85 thermostatic expansion valve. Some times it work well but sometimes it give frequently low suction alram.

Please help......

[moideen]

hi rishab,i checked the chiller catalog.recheck your chiller that is equipped with electronic expansion valve or txv.

[rishab1508]

hi rishab,i checked the chiller catalog.recheck your chiller that is equipped with electronic expansion valve or txv.

It has danfoss make txv model no PHT 085.