Undulations
Radial depressions are slight concavities in the tyre
sidewall.
They run from the bead towards the shoulder of the tyre.
These parts appear in the figure
→ Fig..
The cause is the accumulation of material ...
Principle circuit diagrams for various purging circuits
Note
The arrows in the following illustrations show the direction
of flow of the refrigerant during purging. The refrigerant flows
against the direction of flow during normal conditioning of the
air, which is why the high-pressure system o ...
Blowing through refrigerant circuit with compressed air and nitrogen
Use compressed air to force moisture and other contaminants
out of the refrigerant circuit and use nitrogen to force
moisture out of the refrigerant circuit.
The method of blowing through the refrigerant circuit with
compressed air ...