Kaeser Rotary Screw Compressor SM 15

- Regular cleaning of the cooler ensures reliable cooling of the machine and the compressed air. The frequency is mainly dependent on local operating conditions.

A filter mat helps to keep the cooler clean. Despite this fact, the cooler will clog over a period of time. Do not use sharp objects to clean the cooler. It could be damaged.

1. Carefully remove the filter mat from the retaining frame.

2. Dry brush the oil and air coolers and use a vacuum cleaner to suck up the dirt.

3. Carefully insert the filter mat in the retaining frame.

Check the Air Filter:; Precondition:; - The power supply disconnecting (isolating) device is switched off.

- The disconnect device is locked in the off position.

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

Switch off and lock out the power supply isolating device and verify the absence of voltage.

Turn adjusting nut (1) to loosen the tension on the belt until it can be removed from the pulley.

Install the new belt and use the adjusting nut (1) to adjust tension until the marker pin reaches the lower end of the elongated hole.

Sign off on the belt replacement

Checking the coolant oil level:

- The sightglass allows a risk-free reading of the cooling oil level. The oil indicator should be fully filled with oil when the machine is at standstill.

- The ideal situation is with the oil level around the optimum mark when the machine is running.

- The filter mats help to keep the cooler clean. If the filter mats are clogged, adequate cooling of the components is no longer ensured.

Control Cabinet: Check the Filter Mat:

- A filter mat is placed behind every ventilation grill. Filter mats protect the control cabinet from ingress of dirt. If the filter mats are clogged, adequate cooling of the components is no longer ensured. In such a case, clean or replace the filter mats.;

1. Check the safety relief valve: In order to check the safety relief valve, the machine's working pressure is raised above the activating pressure of the valve.

- Blow-off protection and air system pressure monitoring are switched off during the test.

- During normal operation, the blow-off protection switches off the machine before the safety relief valve responds.

- During inspection, the blow-off protection will switch off the machine only when the activating pressure of the safety relief valve has been exceeded by 14.7 psig.

- Follow the detailed procedure in the SIGMA CONTROL 2 operating manual.

- Never operate the machine without a correctly functioning safety relief valve.

- Replace a defective safety relief valve immediately.

Checking the Belt Tension and Adjustment

Adjust the tension when the marker pin reaches the top end of the elongated hole.

Use the adjusting nut (1) to adjust the spring tension until the marker pin reaches the lower end of the elongated hole.

Turn the pulley by hand so that all of the belt can be inspected for damage.

In case of damage: Replace the drive belt immediately.