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2202MYJE-MY-C8-N_2018.02.

Chapter 4 Operation of Compressor and Unit

Compound 2-stage Screw Compressor 3225**C 4.1 Lubricating Oil (Refrigerant Oil)

4-3

 Polyolester Synthetic Oil (POE) for R134a: compatible synthetic oil

Brand

Kinematic viscosity (40°C) mm

Manufacturer

Type

JOMO Freol α100

107

POE

 When using lubricating oil of a brand not described in this section, or when using

lubricating oil along with refrigerants or gases not described in this Section, please

4.1.3 Change of Lubricating Oil Brand

When changing the lubricating oil for another brand for some reason, pay attention to the following:

 The change of lubricating oil brand may cause problems in operating conditions and

the compressor. When changing the lubricating oil brand in use, make sure to

 Package unit composition differs depending on the characteristics of lubricating oil

(compatible/incompatible with refrigerant). As a general rule, changing compatible oil

to incompatible oil or vice versa is not allowed.

 Lubricating oil contains various additives to fulfill necessary lubricating conditions. Types of

additives and their mixing ratio depend on each oil brand. We, therefore, recommend to avoid

mixed use of different brands of lubricating oil. If mixed brands of lubricating oil are used, the

different additives in the lubricating oil may react with each other and produce foreign

substances like slurry.

 If it is necessary to change the brand of lubricating oil, collect as much as oil as possible from

the compressor as well as from the condenser, evaporator, and all other refrigerating unit

components before charging the new lubricating oil. After 100 to 200 hours of operation, replace

the oil again.

 When changing the lubricating oil for one of a different brand, be sure to ask the lubricating oil

supplier whether such change does not cause any problem. In particular, before changing

current lubricating oil for new one by a different supplier, ask both manufacturers for any

possible problems that may result from the lubricating oil change.

 There is no problem in changing the viscosity level within the same brand. However, make sure

that the viscosity grade will not cause problems during operation. (Example ： SUNISO

3GS→SUNISO 4GS)

mycom 3225MSC User Manual

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