Graco 312359J important safety instructions With Heat, Heat Fluid

8.Run the pumps until the material has reached the desired temperature. See Heat Fluid, page 31.

9.Once desired temperature is reached, press .

10.Turn off the main air shutoff valve (CA).

CA

11. Close recirculation valves (AC, AD).

AC AD

12. See Spray, page 32.

NOTE:

If you circulate the A side pump at pressures greater than 3000 psi (21 MPa, 210 bar), an advisory is issued and the yellow LED on the display illuminates. This is a reminder to select Spray mode prior to spraying and to circulate at a lower pressure to avoid excessive pump wear.

If you circulate the A side pump above 5200 psi (35.4 MPa, 354 bar), an alarm shuts the pump down to pre- vent accidentally spraying material while still in circula- tion mode.

Recirculate

With Heat

Using recirculation mode when heating the material is required. Note the temperature at the top of the heater (outgoing or back to hopper). When the thermometer and display reach operating temperature, the material is ready to spray.

Heat Fluid

To heat fluid evenly throughout the system:

1.Circulate fluid at approximately 1 gpm (10-20 cycles/min.) to raise temperature of hoppers to 80-90° F (27-32° C).

2.Decrease circulation rate to approximately 0.25 gpm (5 cycles/min.) to increase the heater outlet temper- ature to match the spray temperature.

NOTE:

Circulating fluid too quickly without decreasing the circu- lation rate will increase only the hopper temperature. Similarly, circulating fluid too slowly will increase only the heater outlet temperature.

NOTE:

Agitate, recirculate, and heat material only as necessary to avoid mixing air into the fluid.

312359J 31