why CIC system ?

[oilzee]

happy new year to all of you.

I have a blast freezer 4H-15.2 Bitzer compressor without CIC system ,room temperature -35°C by using R22 refrigerant .

I realised the compressor oil become brown colour . Last oil changing was 1 year ago . some people said i need to install CIC system to prevent oil colour changing .

could any body guide me where to get the information or article about CIC system and VARICOOL system ? when i need to fix those system and why install head fan ?

I have tried on GOOGLE search but still can not get what i want .

Your help would be much appreciated .

Regards
oilzee

[nike123]

http://www.bitzer.de/download/download.php?P=/doc/&N=kt-130-1.pdf&ccode=DE
http://www.bitzer.co.kr/public_html/images/pdf/kv-9801-de.pdf

[oilzee]

Hello Nike 123 ,thanks for your help .i 'm down loading the file .

[oilzee]

let's say the system is using R507 refrigerant , Do we need to fix CIC system ?

[nike123]

let's say the system is using R507 refrigerant , Do we need to fix CIC system ?
Install Bitzer software, find your compressor and set your operating conditions and software will tell you what you need.
I doubt that is necessary for R507 or R404A since their vapor density is higher at same evaporation temperatures.

[oilzee]

I doubt that is necessary for R507 or R404A since their vapor density is higher at same evaporation temperatures.

Thanks Nike , i will do it .

[oilzee]

one more question.if i use it as a freezer storage ,room temperature from -35°C set it to -20°C , what would it be ? still need CIC system ?

[nike123]

one more question.if i use it as a freezer storage ,room temperature from -35°C set it to -20°C , what would it be ? still need CIC system ?

Varicool or CIC depend on size of compressor!
For R22 and room temperature -20 evaporation will be around -28°C and that require CIC or Varicool as well as aditional head cooling.
You cannot use capacity control when you have CIC !
http://www.bitzer.de/download/download.php?P=/doc/&N=kb-100-5.pdf&ccode=DE