Mitsubishi S6B3 Operation & Maintenance Manual page 64

Chapter 6 COOLANT
Metal specimen
Circulation metal-
lic causticity
(98±2°C
[208.4±35.6°F],
1000 Hr,
30 vol %
(E.G)
Properties of
50 vol %
liquid after the
(P.G)
test
Metal specimen
Circulation metal-
lic causticity
(88±3°C
[190.4±37.4°F],
1000±2 Hr,
30 vol %
(E.G)
Properties of
liquid after the
test
Condition of
parts
Silicon
Rubber adapt-
ability Acrylonitrile
(30 vol %, butadiene rub-
115°C [239°F], ber
360 Hr)
Ethylene pro-
pylene diene
monomer
6-4
Table 6-2 LLC Specification
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 seal
Inside of pump case and blade Free from remarkable corrosion
Tensile strength change
Elongation change
Volume change
Hardness change
Tensile strength change
Elongation change
Volume change
Hardness change
Tensile strength change
Elongation change
Volume change
Hardness change
Standard
±0.30 mg/cm 2
No visible signs of corrosion on the surface
excluding the area contacting to spacer.
However, discoloration is acceptable.
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 contacting to spacer.
However, discoloration is acceptable.
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.
-60 to 0 %
-40 to +20 %
0 to +40 %
-20 to +10 %
0 to +10 %
-15 to +15 %
0 to +40 %
-10 to 0 %
0 to +10 %
-30 to 0 %
0 to +10 %
-10 to 0 %