Kaeser Screw Compressor SK19

Lock the main disconnect in the “off” position in accordance with applicable lock out/tag out procedures (example: OSHA CFR 29 § 910.147) to ensure that the compressor does not restart.

Attention!: The power supply voltage (see circuit diagram) must be fitted and connected with the compatible motor overload relay, and the set point must be adjusted.

The relay is set to the standard adjustment at the factory.

Compressor motor: Wye--delta start

Overload relays set points see wiring diagram.

In the Wye---delta configuration the phase current is fed through the motor overload relay.

This phase current is 0.58 times the nominal motor current.

For the nominal motor current see motor nameplate.

Lock the main disconnect switch in the 'off' position

Check the tension of the belt drive

Re-tension the belt drive if necessary

Tension the belt drive with the hexagonal nut (1)

Sign off on the belt tension check

Attention!: Replace the run--in oil filter cartridge with a standard oil filter cartridge (supplied with the compressor) after approximately 200 operating hours.

Change the oil fillter cartridge according to the regular maintenance schedule (see chapter 9.2) or when the corresponding service message is displayed on SIGMA CONTROL (see chapter 8.1).

It is recommended that the oil filter cartridge is replaced always when the oil is changed.

Removal and replacement of the oil filter cartridge

Stop the compressor package under full load (see chapter 8.3).

Lock the main disconnect in the ”off” position in accordance with applicable lock out/tag out procedures (example: OSHA CFR 29 § 1910.147) to ensure the compressor does not restart.

Before opening or removing pressurized components (pipes, hoses, tanks, etc.) it is imperative that the compressor package is completely depressurized.

Venting the compressor package (see chapter 9.10).

Warning: This test requires trained personnel with PPE!

Refer to chapter 1.5 for the safety relief valve activating pressure.

Have the safety relief valve tested by an authorized KAESER distributor in accordance with the maintenance schedule (see chapter 9.2).

For more details see SIGMA CONTROL manual.

Compressor run so that its discharge pressure exceeds the maximum pressure set on the SIGMA CONTROL?

Enter the discharge pressure of the compressor

Safety relief valve activated at the correct pressure?

Sign off on the safety relief valve test

The oil cooler and air aftercooler must be checked for clogging regularly. Heavy contamination could lead to excessive temperatures in the oil circulation system.

See regular maintenance schedule for cooler maintenance interval (chapter 9.2).

Switch off the compressor package under full load (see chapter 8.3).

Lock the main disconnect in the ”off” position in accordance with applicable lock out/tag out procedures to ensure the compressor does not restart.

Before opening or removing pressurized components (pipes, hoses, tanks, etc.) it is imperative that the compressor package is completely depressurized.

Venting the compressor package (see chapter 9.10).

9.13.1 Removing and cleaning the oil cooler/air aftercooler:

Unscrew the hose connector (2) and the pipe connector (3) from the combination valve.

Unscrew the Allen screws (1) on the aftercooler.