SDMO R33C3, User And Maintenance Manual

Page: 153 / 244

6-4
Chapter 6 COOLANT
Circulation
metallic causticity
(88±3°C
[190±37°F],
1000±2 Hr,
30 vol % (E.G))
Test piece
Mass
change
Aluminum ±0.60 mg/cm 2
Cast iron ±0.30 mg/cm 2
Steel ±0.30 mg/cm
2
Brass ±0.30 mg/cm
2
Solder ±0.60 mg/cm 2
Copper ±0.30 mg/cm 2
External of test piece after the
examination
Not corrosion on surface excluding between
test piece and spacer. Discoloration is OK.
Properties of
liquid after the
examination
pH 6.5 to 11.0
pH change Maximum ±1.0
External of liquid
Not remarkable discoloration, separation
and gel.
Condition of
parts
Pump seal Not trouble while the examination
Inside of pump case and blade Not remarkable corrosion
Rubber
adaptability
(30 vol %,
115°C [239°F],
360 Hr)
Silicon
Tensile strength change -60 to 0 %
Elongation change -40 to +20 %
Volume change 0 to +40 %
Hardness change -20 to +10 %
Acrylonitrile
butadiene
rubber
Tensile strength change 0 to +10 %
Elongation change -15 to +15 %
Volume change 0 to +40 %
Hardness change -10 to 0 %
Ethylene
propylene
diene monomer
Tensile strength change 0 to +10 %
Elongation change -30 to 0 %
Volume change 0 to +10 %
Hardness change -10 to 0 %
Storage stability vol % (30 vol %, room temperature, 6 Hr) Maximum 0.3
Table 6-2 LLC specification
Property Standard
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