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6.4 Adjustment and servicing procedures
6.4.1 Coolant
6.4.1.1 Coolant level check
– Check the levels of the coolant in the radiator
cooler. The levels show in transparent tubes fitted
at the radiator top tank. The levels should
normally be at the bottom of the filler pipes as
they go into the tanks.
– Add coolant, if necessary. The location of the
radiator filler cap (1) is shown in figure above.
– Use PARCOOL EG as coolant.
6.4.1.2 Adding coolant for units with
optional preheater
Open the preheater drain point (1) during filling of the
coolant. This way air can be vented out of the cooler.
6.4.1.3 Testing coolant inhibitor level
Use coolant test strips to measure, chloride nitrite and
glycol concentrations. Cavitation/corrosion
protection is indicated on the strip by the level of
nitrite concentration. Freeze/boilover protection is
determined by glycol concentration. Use the test
strips as follows:
– Dip the strip into coolant for one second. Remove
and shake briskly to eliminate excess fluid.
– Immediately compare end pad (% glycol) to the
color chart.
– Sixty seconds (one minute) after dipping,
compare the nitrite pad.
For the best results make the tests while the coolant is
between 10°C - 60°C (50°F - 140°F). Wait at least 60
seconds, but not longer than 75 seconds, before
reading the nitrite level.
1
This instruction is only applicable
for units equipped with an optional
“Preheater".
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