Bitzer screw compressor type HSK 7451-80-40P

[dolce]

Hi / Dears
I have 2 Bitzer comp. one HSK & HSN the first -10 C : +40 C and other -35 C : 40 C . they have ECO connection . My question can i use the comp. type HSK in -35 C : 40 C too ?
Thanks friends

[aramis]

No!

Depending on the type of refrigerant used, from -10 to -20°C the compressor motor will not cool enough with the refrigerant, motor protector will trip.

[dolce]

No!

Depending on the type of refrigerant used, from -10 to -20°C the compressor motor will not cool enough with the refrigerant, motor protector will trip.

Thank you for your reply could you please tell me about the min. evaporating temp. and can i use it in NH3 refrigerant?

[Magoo]

definitly not ammonia as they are semi hermetics,

[aramis]

You can get all the answers you want from the manufacturer's site www.bitzer.de.

All manufacturers specify a minimum evaporating temperature for their compressors depending on the refrigerant and design (model).

You cannot use Bitzer semihermetic screws with R717 only the open type (OSK), are suitable.

[mond13]

as suggested above already the bitzer website offers an design tool with propper calculations. (also available as software to be downloaded)

[Jahangir]

I think also the coolpack software could help you on system analysis .