30
XAVS 136 Dd - XAHS 146 Dd - XATS 156 Dd - XA(S) 186 Dd - XAHS 186 Dd
4.6.8 REPLACING THE COOLANT
Drain
– Completely drain the entire cooling system.
– Used coolant must be disposed or recycled in accordance with
laws and local regulations.
Flush
– Flush twice with clean water. Used coolant must be disposed or
recycled in accordance with laws and local regulations.
– From the Atlas Copco Instruction book, determine the amount of
PARCOOL EG required and pour into the radiator top tank.
– It should be clearly understood that the risk for contamination is
reduced in case of proper cleaning.
– In case a certain content of ‘other’ coolant remains in the system,
the coolant with the lowest properties influences the quality of
the ‘mixed’ coolant.
Fill
– To assure proper operation and the release of trapped air, run the
engine until normal engine operation temperature is reached.
Turn off the engine and allow to cool.
– Recheck coolant level and add if necessary.
4.7 CLEANING COOLERS
Fig. 4.3 Compressor oil cooler (1), engine coolant cooler (2) and engine
oil cooler (3)
Keep the coolers (1), (2) and (3) clean to maintain the cooling
efficiency.
Then clean by air jet in reverse direction of normal flow.
Steam cleaning in combination with a cleansing agent may be applied.
Close the service door(s).
In case of a mix of different coolant products this type
of measurement might provide incorrect values.
Remove any dirt from the coolers with a fibre brush.
Never use a wire brush or metal objects.
To avoid damaging the coolers, angle between jet and
coolers should be approx. 90 °.
(do not use jet at max. power)
Protect the electrical and controlling equipment, air
filters, etc. against penetration of moisture.
Never leave spilled liquids such as fuel, oil, water and
cleansing agents in or around the compressor.
Caution: do not top off when the engine is hot.
(2)
(1)
(3)
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