7.To achieve a narrow spray pattern, turn pattern adjustment valve (25) clockwise.
(Close)
(Open)
25
ti4841a
FIG. 10
8.For HVLP only: To measure the aircap atomizing pressures, use the accessory aircap verification kit. See Accessories on page 30.
Setup
9.To improve atomization, reduce the fluid flow rate. Increasing the air pressure can improve atomization but may result in poor Transfer Efficiency (TE) or
• For gravity feed HVLP guns, at 29 psi (200 kPa,
2.0bar) gun inlet air pressure, the pressure at the aircap will be 10 psi (70 kpa, 0.7 bar).
•For pressre feed HVLP guns, at 40 psi (280 kPa, 2.8 bar) gun inlet air pressure, the pres- sure at the air cap will be approximately 10 psi (70 kpa, 0.7 bar).
•For HVLP guns, local laws may limit the maxi- mum automatic air pressure to 10 psi (70 kPa,
0.7bar) at the air cap for HVLP compliance. The accessory Air Cap Verification Kit is avail- able to measure the atomizing pressure at the air cap. See Accessories on page 30.
•For Compliant guns, to maintain compliant operation (TE equal to HVLP) the gun inlet pressure must not exceed 29 psi.
12 | 310692D |
