Doosan D1146, Установка, эксплуатация и обслуживание

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Note : In taking the cooling water sample, if the water in auxiliary tank were taken, it is hard
to measure the accurate density. Take the cooling water sample necessarily loosen-
ing the cooling water discharge plug.
(2) At the state of a test paper soaked in the sampled water, after taking the paper out
through water agitation, shake off the water.
(3) Wait for about 45 sec. till the color change of test paper.
Note : However, it should not elapse longer than 75 sec, and if it did, the hue would change.
(4) Make the numerical value by comparing the test paper which hue has changed with the
color list of label on storage bottle.
(5) By comparing the hue changed into yellowish green or so with the green color indication
of test paper storage bottle, confirm the density. (Then, the density indication must be in
the hue range of 33% to 50%).
(6) The brown at the middle of test paper and the lower pink color indication represent the
additive state for rust prevention, and the proper range is that the meeting numerical
value of brown (vertical) and pink color (horizontal) locates in the range of 0.3 to 0.8 at
the color list of label on the test paper storage bottle.
(7) In case of less than 0.3, replenish the additive for rust prevention (DCA4), and in case of
more than 0.8, pour out the cooling water about 50% and then readjust the density after
refilling with clean fresh water.
•
Amount of Anti-freeze in winter
- 21 -
Ambient
Temperature (
˚C
)
Over -10
-10
-15
-20
-25
-30
-40
15
20
27
33
40
44
50
Anti-freeze (%) Cooling water (%)
85
80
73
67
60
56
50