Lubricating Oil Management Criteria - mycom 1612LSC series Instruction Manual

4.1.5

Lubricating Oil Management Criteria

Lubricating oils that are managed by the criteria are classified into the following categories:
(1) Synthetic oils: Polyalkylene glycols (PAG)
(2) Mineral oils: Naphthenic base oils and paraffinic base oils
(3) Synthetic oils: Alkylbenzene (AB) and Polyalphaolefine (PAO)
(4) Synthetic oils: Polyolesters (POE)
 Oil sampling and analysis is recommended every six months.
 If the following control criteria are not satisfied, replace the oil.
◆ Note that the water content of PAG shall be excluded from the above oil replacement criteria.
Refer to the Note in the following table.
The analysis items and the criteria are shown in the following tables. Please note that these
management criteria may be changed without notice.
Item
(a) Color phase
(b) Total acid number (TAN)
(c) Kinematic viscosity
(d) Water content
(e) Degree of contamination
 Table 4-2 Mineral Oil and Synthetic Oil (AB, PAO)
Item
(a) Color phase
(b) Total acid number (TAN)
(c) Kinematic viscosity
(d) Water content
(e) Degree of
contamination
Item
(a) Color phase
(b) Total acid number (TAN)
(c) Kinematic viscosity
(d) Water content
(e) Degree of
contamination
Note: Synthetic oils (compatible with ammonia) are so highly hygroscopic that they can absorb
moisture at the time of sampling. In addition, the ammonia content they have absorbed
may be detected as the water content at the time of the analysis, making it difficult to
precisely measure the water content. Thus, use the criterion value only as a reference.
Compound 2-stage Screw Compressor
1612LSC Speed Increaser Type
 Table 4-1 Synthetic Oil (PAG)
ASTM color scale: 4.0 or less
0.1 mg KOH/g or less
Within ±10 % from that of fresh oil
2000 mass ppm or less
Note
Degree of contamination measured by mass method (Millipore
value) shall be 15 mg/100 mL or less
ASTM color scale: 6.0 or less
0.3 mg KOH/g or less
Within ±15 % from that of fresh oil
100 mass ppm or less
Degree of contamination measured by mass method (Millipore
value) shall be 15 mg/100 mL or less
 Table 4-3 Synthetic Oil (POE)
ASTM color scale: 4.0 or less
0.2 mg KOH/g or less
Within ±10 % from that of fresh oil
200 mass ppm or less
Degree of contamination measured by mass method (Millipore
value) shall be 15 mg/100 mL or less
4-5
2202L5JE-DA-C5-N_2015.05.
4. Compressor and Package Unit Operation
Criteria
Criteria
Criteria
4.1 Lubricating Oil (Refrigerant Oil)