Graco 309524L Setting Heater Control, Adjusting for Spraying, Refer to FIG

Setting Heater Control

(Refer to FIG. 11)

1.Set the heater control knob (33) to a trial setpoint of 4 or 5.

2.Start the pump and circulate fluid through the sys- tem at very low pressure, about 10-12 oz/min (0.30-0.35 liter/min).

3.After 10 minutes, read the temperature on the ther- mometer (2). If it does not match the desired tem- perature, adjust the setpoint.

33

2

05549-524

FIG. 11: Setting Heater Control

Operation

Adjusting for Spraying

CAUTION

Operating the heater at its highest setting, over 180°F (82°C), for long periods of time decreases the heater life and can cause fluid to dry out; which can clog the heater and result in a poor finish.

1.Adjust pump pressure and heater setpoint to the lowest settings needed for good fluid atomization.

2.Set all system back pressure valves (S - FIG. 1) to maintain even fluid pressure at all gun stations.

309524L 15