Kaeser Screw Compressor AS 30

Sigma Lubricants: M-460, FG-460

Drain the oil completely from the following components in the sequence shown:

■ Heat exchanger (Option W2/W3)

Always change the oil filter and oil separator cartridge when changing the oil.

Compressed air helps to expel the oil. This compressed air can be taken either from the compressor itself or from an external source.

An external source of compressed air is necessary in the following cases (examples):

Deposits in the heat exchanger can significantly reduce its capacity to transfer heat. Check the heat exchanger regularly for leaks and contamination. Frequency of checking is dependant on the characteristics of the heat transfer medium. Pressure in the cooling oil circuit is generally higher than that in the heat recovery system. If a leak occurs, oil will run into the heat-receiving medium. Increased cooling oil loss can indicate a leaking heat exchanger.

Precondition: The power supply disconnecting device is switched off, the device is locked off, the absence of any voltage has been verified.

Check the heat exchanger visually for leaks.

Have an authorized KAESER service representative check the heat exchanger for internal leaks and clean if contaminated.

Sign off on the heat recovery system maintenance

Precondition: The machine is switched off.

Filter mat removed from the retaining frame

Loose dirt removed from the filter mat

Was the filter mat washed with lukewarm water and household detergent?

Filter mat changed if cleaning was not possible or if the change interval had expired

Filter mat carefully inserted in the retaining frame

Sign off on the filter mat change

Precondition: The power supply disconnecting device is switched off, the device is locked off, the absence of any voltage has been verified. The machine has cooled down. Touching the moving drive belt may result in severe bruising or even loss of limb or extremities!

Loosen the screw plugs 4 and lift the belt guard 5

Turn adjusting nut 1 to loosen the tension on the belts until they can be removed from the pulley

Install the new set of belts and use the adjusting nut 1 to adjust tension until the marker pin reaches the lower end of the elongated hole

Replace the belt guard and tighten the screw plugs

Precondition: The machine is switched off.

Filter mat removed from the retaining frame

Loose dirt removed from the filter mat

Was the filter mat washed with lukewarm water and household detergent?

Filter mat inserted in the retaining frame

Sign off on the filter mat cleaning