Compressor Label R134a but the label inside the unit is R404a

[Mhikhel]

I will repair a Desmon chiller I see the label inside the unit it is R404a refrigerant but when I see the compressor the label is R134a. That why I cannot start to repair because I dont know what refrigerant I will use. Can you help me with this. Thank You

[install monkey]

has the compressor been changed before? what does the expansion valve say- probably best to contact the manufacturer for comfirmation

Name: FRAU FOODSERVICE, S.A.U. (http://www.desmon.it/index.php?option=com_contact&task=view&contact_id=8&Itemid=7)
Telephone: (+34) 902 20 10 69
Fax: (+34) 93 348 15 09

[chemi-cool]

In your ambient, it would most likely to be R-134a, Difference between compressor for 134 and 404 is displacement.
Check the running pressure, it might help you.

[coldcraft]

Check the system pressure after it has been standing off for some time,check your ambient temperature then use a comparator to get the pressure/temperature readings and you will then know what the system is charged with

[savoc]

check your t.x valve.