Compressed air system

Shared compressed air for the whole building: outlets in the Metal, Wood, Big, Textile, Electronics, Sandblasting and Painting/wet rooms, plus the lasers and heat presses. Air is produced, stored and dried in the compressor room beside the storage room.

Compressor room with receiver, filter and MD20 dryer

Compressor room with receiver, filter and MD20 dryer




Location

Compressor room, beside the storage room

Pressure

7.5 bar nominal at the compressor

Maintainers

Erik Cederberg, Daniel Berglund

Service

Aircenter AB (formerly Kista Kompressorservice), about once a year

Components

In order along the air path:

Component

Notes

Air compressor — Mattei ERC 507L

7.5 kW, 1.38 m³/min. Left in AUTO.

Cyclone filter

At the compressor outlet. Timer-controlled condensate drain, replaced April 2025.

Air receiver

270 L vertical tank, ABAC V270 11B ZINC (model 4101000906, serial 2400165127), rated 11 bar. Safety valve 810 DN10, 11 bar. Timer-controlled condensate drain. Installed September 2024; approved by Dekra 1 December 2024.

FM-0018C2 filter

Between receiver and dryer; removes oil and particles down to 1 µm. Delivered with the dryer, May 2022.

Air dryer — Mattei MD20

Refrigerated dryer; removes moisture.

Oil/water separator — Sepremium 3.5 KA

Treats oily condensate from both drains before disposal. Not in the air path.

Using the air supply

  1. Use a regulator and set the pressure to the tool's limit. Line pressure is too high for some tools, such as airbrushes.

  2. Check hoses and couplings, connect securely and keep hoses out of walkways.

  3. When done, close the supply to the tool and release its pressure before disconnecting.

  4. Never point compressed air at people. It is not breathing air.

Leave the compressor and dryer controls alone unless coordinating a shutdown with the maintainers. Use the compressor's emergency stop only in a real emergency; a planned stop uses STOP / ARRESTO.

Troubleshooting

Symptom

Action

One tool or room without air

Check that tool's shutoff, regulator, hose and coupling

Several rooms without air

Check the receiver gauge and the compressor lamps. The main outlet valve is just right of the dryer; check it is open, unless it has been closed for maintenance.

HIGH TEMP lamp on the compressor

See the compressor page. This is a recurring fault; the most recent trip was 14 October 2026.

Pressure drops during use

A leak or a heavy user, such as the blast cabinet. Close unused supplies and report sustained heavy running.

Water or oil coming out of outlets

Report it so the dryer, filters and drains can be checked

The Redsail laser moves but won't fire when air pressure is too low.

Distribution

Mostly copper pipe. The layout below dates from the 2016 installation; rooms have changed since.

Area

Distribution

Metal room / shelter

Blue 12 mm hose with brass tees and quick couplings

Wood and Big rooms

Shared branch with wall and ceiling outlets, about 15 in total

Textile and Electronics

Pipe through the stairwell shaft on the building's short side; branch shutoff outside the wood room

Sandblasting room

Wall outlet and supply to the blast cabinet

Wet / painting room

Outlet by the sink

Distribution drawing, January 2016 (PDF)

History

  • June 2025: the old 80 L wall receiver in the Metal room removed.

  • October–November 2024: compressor, dryer and receiver moved to the current compressor room.

  • September 2024: 270 L receiver and Sepremium separator installed.

  • May 2022: Mattei MD20 dryer replaced the Ceccato DLX22, which had failed.

  • June 2018: used Ceccato DLX22 dryer installed by Theeo.

  • January 2016: current compressor installed and system pressurised.

Theeo after installing the Ceccato DLX22, June 2018

Theeo after installing the Ceccato DLX22, June 2018


Not yet documented

  • Receiver inspection certificate and next inspection date