Mitsubishi S12R-T2MPTK Operation & Maintenance Manual page 66

Chapter 6 COOLANT
Metal specimen
Circulation metal-
lic causticity
(98±2°C
[208±3.60°F],
1000 Hr,
30 vol %
(E.G),
50 vol %
Properties of
(P.G)
liquid after test-
ing
Metal specimen
Circulation metal-
lic causticity
(88±3°C
[190±5.40°F],
1000±2 Hr,
30 vol %
(E.G)
Properties of
liquid after test-
ing
Condition of
parts
6-4
Table 6-2 LLC Quality Requirements
Property
Aluminum, Cast
Mass
iron, Steel, Brass,
change
Solder, Copper
Appearance of the specimen
after testing
pH
pH change
Pre-alkalinity change
Precipitation
Appearance of liquid
Density Fe, Cu, Al, Zn, Pb,
of ion NH 4 +
Aluminum
Cast iron
Steel
Mass
change
Brass
Solder
Copper
Appearance of the specimen
after testing
pH
pH change
Appearance of liquid
Pump seals
Pump case inner surfaces and
blades
Standard
2
±0.30 mg/cm
No visible signs of corrosion on the surface
excluding the area in contact with the
spacer. However, discoloration is accept-
able.
7.0 to 9.0
±1.0
±15 %
1.0 vol % or less
No remarkable discoloration, separation
and gel generation.
10 ppm or less
±0.60 mg/cm 2
2
±0.30 mg/cm
2
±0.30 mg/cm
2
±0.30 mg/cm
2
±0.60 mg/cm
±0.30 mg/cm 2
No visible signs of corrosion on the surface
excluding the area in contact with the
spacer. However, discoloration is accept-
able.
6.5 to 11.0
Maximum ±1.0
No remarkable discoloration, separation
and gel generation.
Free from any malfunction, liquid leak and
abnormal noise during operation.
Free from remarkable corrosion