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Tighten the 6 off Bonnet screw to 12 Nm [9 ft/lb]
Assembly Procedure
The back pressure regulator can be serviced and maintained without removing the unit from the paint
pipework.
Fully unscrew the adjusting screw to remove all paint line pressure (or exhaust the compressed
air pilot supply)
Isolate the unit from the paint system pipework (and compressed air supply if applicable)
Position a ‘drip tray’ underneath the unit to minimise any paint spillage.
Unscrew the 6 off bonnet screws by 2 turns and pull the bonnet away from the unit; this should
then release any residual paint within the unit.
For the air pilot controlled version firstly remove the 10 off screws retaining the air pilot cap and
remove with the diaphragm.
Tighten opposed screws in stages to maintain an even clamping force.
Pressure test with 6 bar compressed air and check for leaks.
Reintroduce the paint system pressure and adjust the back pressure regulator to the required
setting.
Fully remove the 6 off bonnet screws.
Remove the bonnet and diaphragms.
Clean all parts as required.
Reassemble the unit with new diaphragms.
77-3247 R2.2
14/16
www.carlisleft.com
