Graco PR70e, Instructions Manual

Page: 27 / 70

Setup
334135B 27
10. Press the Enter button ( ) to accept the new
value or press the Abort/Cancel button ( ) to
keep the previous value.
Engaged Piston Position
11. Close the vented ball valve to eliminate the air pres-
sure to the system.
12. High light the metering tube entrance position but-
ton ( ).
13. With no air pressure in the system, press the Dis-
pense Request button ( ).
14. Move the piston drive block until it just begins to
engage the cylinder using one of the following meth-
ods. No material should be dispensed.
Manually Move the Piston Drive Block
a. Perform Pressure Relief Procedure on
page 33.
b. Remove the machine cover.
c. With no air pressure in the system, manually
push the piston drive block until the piston
engages the cylinder and resists movement. A
number from 2000 to 2400 will be displayed.
NOTE: If a number outside of this range is displayed,
ensure the air cylinder air line connections are not
switched and that the linear position sensor is properly
installed.
15. Ensure there is no material in the waste container
under dispense valve. The piston block moved too
far and caused material to be dispensed if there is
material in the waste container. Go back to step 14
if the piston moved too far.
16. Press the Enter button ( ) to accept the value or
press the Abort/Cancel button ( ) to keep the
previous value.
Prepare Machine for Operation
17. High light the Retract Piston button ( ).
18. Press the Dispense Request button ( ).
19. Open the vented ball valve to enable system pres-
sure.
20. Adjust the system air pressure regulator to increase
air pressure to standard operating pressure for your
application.
21. Navigate to the Shot Mode Screen or Operator
Mode Screen .
In the steps below, ensure pressure is off or piston
may activate and pinch fingers against machine block.
The piston will fully retract when the system is pressur-
ized. To avoid injury, ensure the machine shield is
installed.