Tim Dalton is technical service manager for Kaeser Compressors Inc.

Five steps to save money with maintenance

1. Use only genuine OEM parts for maximum service life and equipment efficiency.
2. Follow a routine maintenance plan or negotiate a preventive service agreement with a reputable service company.
3. Perform a leak survey at least annually. On average, over 35 percent of all air used is wasted to leaks.
4. Use synthetic compressor fluids to reduce friction and extend change intervals.
5. Even the best maintained equipment has a finite service life or eventually becomes obsolete.

Checklist

Pump or Airend

Piston/Pump

• Check the inlet and discharge valves for sticking due to carbon deposits.
• Check for excessive air through the crank case breather indicating worn piston rings.
• Check for low oil pressure indicating worn bearings.

Recommended Rebuild: 5,000-10,000 hours

Rotary Screw Airend

• Check for mechanical seal leakage.
• Check for inlet valve wear.
• Check for excessive bearing "play."

Recommended Rebuild: 50,000 - 100,000 hours

Motor

• Grease motor bearings with the right type of grease.
• Replace bearings on a conservative schedule.
• Check amp draw to prevent motor overload.
• Ventilate compressor room and limit ambient temperature to increase motor life.

Drive Train

Direct Drive (without permanent alignment components)

• Verify that the direct drive system is perfectly aligned.
• Check frame and mounting block for "settling" which may cause misalignment and coupling damage.

Direct Drive (with permanent alignment components)