Nozzle air flow restriction in Single Line Systems with high viscosity fluids.

Customers running single line output systems and a higher viscosity (thicker) fluid may experience a drastic reduction in atomizing air flow through the nozzle if the hose is flooded with fluid. This can be further aggravated with long (over 20’) runs of tubing between the pump and nozzle. 

If the tubing becomes restricted with excessive fluid it can be cleared by either running the system with the pump adjusted to zero stroke and the air metering screw fully opened, or by disconnecting the tube(s) from the pump(s) and slowly draining the fluid from the tube(s), or applying 80-100psi compressed air to one end of the tube while holding the other end of the tube to collect the fluid. Depending on the viscosity of the fluid and the length of the tube it can take 5-25 minutes to clear enough fluid from the tube to restore atomizing air flow to the nozzle.