Instruction Manual

3-18 Component Description
3.9.4.1 Tri-Mode Swirl Box
The Tri-Mode Swirl Box is a component of the SC-200 Slim Swirl Applicator. It has two air assist and
two fluid regulators and gauges, which regulate the fluid and air-assist pressure to the Fluid Dispensing
Applicator. By varying the fluid pressure, conformal coating materials can be dispensed in a bead,
monofilament, or swirl pattern.
• Bead
- A non-atomized stream is applied to areas where:
 Components are close to keep-out areas.
 Extra material is required.
 Tall components require support.
 Material is needed on the edge or under a component.
• Monofilament
- Material is dispensed in a looping pattern.
- The circles flow together, creating a uniform film.
- Film builds can vary by changing fluid pressure and robot velocity.
- Multiple pattern widths can be obtained by varying air pressure.
• Swirl
- The Swirl Mode creates a conical, atomized pattern of material.
- It provides excellent control of pattern width (from 0.25 to 0.50 inches).
- It is ideal for achieving moderately selective coating and thin film builds (0.25 to 3 mils).
Figure 3-14 Tri-Mode Swirl Box