Pressure Relief/Work Interruption - WAGNER GA 250AL Operating Manual

VERSION 12/2018

7.2.2 PRESSURE RELIEF/WORK INTERRUPTION

The pressure must always be relieved:
– after the spraying tasks are finished,
– before servicing or repairing the spraying system,
– before carrying out cleaning tasks on the spraying system,
– before moving the spraying system to another location,
– before something must be checked on the spraying system,
– before the nozzle or the filter is removed from the spray gun.
The components for pressure relief on a CE-compliant spraying system include:
– Air cock with pressure relief hole mounted between compressed air source and pneumatic pump.
– Outlet equipment (return valve) mounted between pump and spray gun.
Pressure Relief Procedure:
1. Close the compressed air supply on the material side upon the product pressure generator.
2. Open product pressure relief valve (see system description) and relieve pressure from the system.
3. Leave product pressure relief valve open.
If the pressure is still not completely relieved after this:
– If the nozzle is obstructed: loosen the union nut and remove the nozzle to release remaining pressure.
– If product hose is obstructed: slowly loosen the hose connections to release the remaining pressure.
Note:
Always follow the procedure described above if pressure relief is specified in the instructions.
ORDER NUMBER DOC 350941
GA 250AL_GA 400AL
28