Air system in a paint shop

This is a fundamental element of the equipment in a paint shop; quality of refinishing and its costs all depends on this installation.

The most important element is a reciprocating or screw compressor. Its task is - to put it briefly – to compress the atmospheric air to such an extent that will allow a proper spraying of coatings and primers.

The same system is also used to drive the various workshop devices. It is a key-factor to precisely determine the need for air and then equip a paint shop in the right compressor.

We need to check how much air is used by paint guns, primers guns and tools driven by compressed air and pneumatic grinder and also Venturi nozzle.

Each device is provided by a manufacturer with a piece of information about a particular amount of air needed, given in l / min - and such a standard paint spray gun operates at a pressure of 3.5 bar may need a 350 l / min, a pneumatic grinder about 300 l / min

All devices working at the same time may exceed the compressor capacity.

Suddenly, it turns out that we can not get a proper quality while painting. Therefore, the effect of "orange peel" is visible on the surface or we can have incorrect shade of paint. In addition to an appropriate amount - workshop equipment needs to be provided in a good quality air system. We use particulate filter, dehydrators and oil removers for cleaning

In paint shops very often I have seen filters installed by random and then there is a question: why do "eyes" or water appear in the paint?

The next part of the system - wires distributing compressed air –they should be selected properly so as not to restrict the flow. Besides, they should also be made of suitable material.

Continuous problems with obtaining a good quality paint finish may be the result of defectively designed and improperly functioning air system. Thus there is a need for excessive polishing of the surface. In extreme cases we may be forced to re-paint.