Hi Dave,
The disc orifices should be closed when cleaning upholstery and partially open when cleaning curtains/fabric wall panels. Select psi to suit the fabric…. anywhere from 100psi to 500psi. Water should not leak from the enclosed head when cleaning. Lower the psi until the optimum cleaning results have been achieved with the nozzle size that you are using.
The 3” Combo Tool is supplied with a 6501 nozzle as standard, and additional nozzles (6502,6503,6504) are also available to purchase depending on rinsing requirements. The 5” Combo Tool is supplied with a 9502 nozzle as standard. The 7” All Purpose Tool is supplied with an 8003 nozzle for use on upholstery, fabric wall panels, and fabric wallpaper, mattresses, headboards etc.
Regards
Steve