How can I reduce energy consumption of the air system?

Fix leaks (leak detection program).Lower setpoints to the minimum required.Stop unloaded running; use master control or VSD.Optimize filtration/drying to cut losses.Maintain coolers and ensure fresh air intake.

What piping and diameter should I use for the air network?

Use piping designed for compressed air (aluminum, copper, galvanized steel or approved PPR/PE-AL-PE). Size for flow and allowable pressure drop; avoid PVC. Slope the main and add drip legs.

How often should I service the compressor?

Typically every 500 hours (oil/filter) for piston units; screw compressors follow OEM intervals (oil/separator/filters). Adjust for harsh conditions (dust, humidity, temperature).

My compressor won’t start, what should I check first?

Power supply and protection (breakers, fuses).Pressure switch and setpoints.Motor thermal overload.Oil level, mechanical binding, belts.Major leaks in the system.

What’s the difference between oil-free and lubricated compressors?

Oil-free units have no lubricant in the compression chamber—cleaner air (food, pharma, dental). Lubricated units use oil for sealing/cooling—long life and efficiency at higher power. Choose based on required purity (ISO 8573-1) and total cost.

How do I remove water from air lines? (condensate)

Install a dryer (refrigerated or desiccant) plus proper filters; use automatic drains on receiver and drip legs. Keep stable line temperature and avoid low points.

What oil should I use in my piston compressor?

Use non-detergent compressor oil: ISO VG 100 (temperate) or ISO VG 68 (cold climates). Avoid automotive detergent oils. Always check the unit’s manual.

How do I size a compressor? (CFM/PSI and tank)

1) Add up simultaneous tool demand in CFM at the required PSI. 2) Add ~20% headroom and choose a compressor whose CFM @ PSI ≥ demand. 3) The receiver smooths peaks; as a quick rule, 8–10 gal per CFM for intermittent duty. For continuous duty, consider a screw compressor.

What preventive maintenance does a piston compressor require?

Recommended: Check oil level/condition weekly; replace per manual (typically every 500 h). Clean/replace intake filter every 250–500 h (sooner in dusty sites). Drain receiver condensate daily (manual or automatic drain). Check belt tension, fasteners, abnormal vibration and temperature. Inspect safety valve and pressure switch quarterly.

Resource center · CBS Air Compressors

Frequently Asked Questions

Find answers to the most common questions about air compressors, maintenance, installation and operation.

Based on real CBS customer questions. Includes links to related resources.

FAQ Support

View products