KAESER M135 SIGMA CONTROL MOBIL, Руководство по обслуживанию

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Maximum frost protection is ensured with an antifreeze concentration of 55% by volume, as frost
protection and heat transfer properties deteriorate beyond this point. Higher concentration also leads
to higher operating temperature.
CAUTION
The engine can be damaged if the antifreeze concentration is insufficient.
Corrosion
Damage to the cooling system
Engine casing fracture
➤ Check coolant.
➤ Protect the coolant against frost.
➤ Top up as necessary.
1. Use the coolant tester as instructed by the manufacturer to test the coolant.
Change the coolant when the concentration of antifreeze is too low.
1. Screw on the filler cap.
2. Close the access door.
10.4.1.3 Mixing coolant
Do not use water without coolant additive. Water alone is corrosive at engine operating temperature.
Water also offers no protection from boiling or freezing.
The coolant is a mixture of clean, fresh water and antifreeze with corrosion inhibitor.
For reasons of corrosion protection and the need to raise the boiling point, the coolant must remain
in the cooling system throughout the year.
The maximum permissible coolant life is 2 years.
➤ Follow coolant recommendations in chapter 2.6.3.
Preparing coolant
Precondition Coolant must meet the specification of ASTM D4985.
➤ The coolant should be mixed in the proportions given by the manufacturer.
KAESER coolant mixture table
Antifreeze Water Frost protection to [°C]
1 part 2 parts −20
1 part 1.5 parts −27
1 part 1 part −37
Tab. 89 KAESER coolant mixture table
The concentration of antifreeze should not be less than 33% for ensured corrosion protection.
10.4.1.4 Checking / topping up the coolant
The proportion of antifreeze in the coolant should not fall below 33% to ensure frost and corrosion
protection and prevent the build up of deposits in the cooling circuit. Topping up with water alone
dilutes the antifreeze concentration and is forbidden.
10 Maintenance
10.4 Engine
No.: 9_6975 00 E
Service Manual Screw Compressor
M135 SIGMA CONTROL MOBIL
105