Atlas Copco QAC 1100 Sd, Инструкция по эксплуатации, Страница: 42 / 64

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Glycol concentration measurement
– In order to optimize the unique PARCOOL EG
engine protection functions, the glycol
concentration in the water shall be always
higher than 33 percent in volume.
– Mixes with a water mix coefficient higher than
68 percent in volumeare not recommended
since it may cause high engine running
temperatures.
– You may order arefractometer to Atlas Copco
using the ordering number 2913 0028 00.
In case of a mix with several coolant
products, this type of measurement
may give incorrect values.
Filling with coolant fluid
– Check if the engine cooling system is in good
conditions (without leakages, clean,…).
– Check coolant fluid conditions
– If coolant fluid conditions are not within the
allowed limits, replace thewhole fluid (refer to
section "Replacingcoolant fluid").
– Refill always with PARCOOL EG.
– Refilling the coolant fluid only with water,
modifies the additive concentration and it is
not allowed.
Replacing coolant fluid
Draining
– Completely drain the cooling system.
– Throw or send to a recycling facility the used
coolant fluid according to local laws and
regulations.
Washing
– Wash twice with clean water.Throw or send to
a recycling facility the used coolant fluid
according to local laws and regulations.
– Find in Atlas Copco instruction manual the
necessary PARCOOL EG amount and put it
into the radiator upper container.
– If the cleaning work is properly made, the risk
of contamination is very low.
– If in the system remains a waste from other
coolant fluid, the coolant fluid with the poorer
properties influences the quality of the "mixed"
fluid.
Refilling
– In order to ensureproper running and air release,
run the engine until achieving the normal
running temperature. Switch off the engine and
let it cool.
– Check again the coolant fluid level and add
more if necessary.
Engine coolant fluid check
Controlling coolant fluid conditions
In order to ensure the product duration and quality
and to optimize engine protection, it shall regularly
be made an analysis of the coolant fluid conditions.
Product quality may be determined by three
parameters.
Visual check
– Check the coolant fluid color and make sure
there are no floating loose particles.
Long maintenance intervals, 5-year
d r a i n i n t e r v a l , t o m i n i m i z e
m a i n t e n a n c e c o s t s ( w h e n u s ed
according to instructions).
pH measurement
– Check the pH value of the coolant fluid using
a pH-meter.
– You may order an Atlas Copco refractometer
using the ordering number 2913 0029 00.
– EG typical value = 8.6.
– If pH value is lower than 7 or higher than 9.5
the coolant fluid shall be replaced.