Doosan AD158TI, Руководство по эксплуатации и техническому обслуживанию

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General information - 32 -
4.3.2. Contamination check of coolant and quantity of anti-freeze
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We recommend the engine coolant for DOOSAN marine engines should be mixture of fresh water and
additional agent (35 ~ 40% anti-freeze and 3 ~ 5% anti-corrosion agent).
Check the quantity of anti-freeze every 600 hours. From time to time, refill the anti-freeze as much as
required.
You can check the quantity of anti-freeze and anti-corrosion agent by using a FLEETGUARD test kit sim-
ply as follow. (FLEETGUARD CC2602M : DHI No. ; 60.99901-0038)
1) Contamination check
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How to use test kit (Striped pad)
(1) Collect half of a coolant sample cup from a drain plug at the lower side of the water pump inlet pipe
or cylinder block. Coolant must be between 10 ° C and 55 ° C when tested. Room temperature is pre-
ferred.
Do not collect the coolant from the expansion tank or overflow system.
The collected sample is less contaminated, so it can not be substituted for the quality of
whole coolant.
(2) Shake the bottle filled with sample coolant to mix well and take out one strip from bottle of the test
kit. Then dip the strip into coolant sample for 3 ~ 5 seconds, take it out and shake it briskly to
remove excess liquid.
Do not touch the pads on the end of the strip. Discard the kit if unused strips have
turned brown for the nitrite test pad.
(3) Wait for 45 seconds until color of the dipping stripe pad is turned into any colors and then compare
and record the results compared with the color figure as following order.
Caution
All three pad readings must be completed no later than 75 seconds after dipping strip.
Do not touch the stripe with fingers.
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How to judge the strip
c) b) a)
a) Compare FREEZEPOINT (end pad) to chart and record result.
b) Next compare MOLYDATE (middle pad) to chart and record result.
c) Finally compare NITRITE test to chart and record result.
Striped