Graco 3A2098H important safety instructions Maintenance Mode, Dispense Control Modes

Appendix A - Advanced Display Module (ADM)

Maintenance Mode

Press from Fluid Plate x, screen 1 (Control Center)

to enter maintenance mode. Maintenance mode enables users to change the control mode, volume to be dispensed, target pressure, and number of dispense valves used in the system.

NOTE: Volume, pressure, and dispense valve options change according to mode.

See Maintenance Mode Operation, page 41, for instructions on changing the control mode, target pres- sure, and number of dispense valves used.

Dispense Control Modes

The PCF system has four fluid dispensing control modes.

•Bead Control – the system controls the flow rate of the material being dispensed. The regulator outlet pressure is varied to control the fluid flow rate to the requested value. Use the bead control when a con- sistent bead size is required.

•Shot Control – the regulator outlet pressure is con- trolled to the requested value. The dispense valve is closed when the target volume is reached or when the automation controller provides a signal.

•Pressure Control – the regulator outlet pressure is controlled to the requested value.

•Full Open Control – the PCF system does not con- trol fluid pressure or flow. Instead the regulator opens to allow for recirculation applications.

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