Vacuum De-Gas And Vacuum Auto-Fill - Graco PR70 Instructions Manual

11. Turn off the vacuum pump.
12. Open the top ball valve of the vacuum tree
manifold (1015).
CAUTION
Operating the tank after the vacuum de-gas proce-
dure without the top ball valve open will result in pump
cavitation, off-ratio conditions, and possible collapse
of the tank.
13. Open the shutoff valves at the base of the tanks.
Vacuum De-gas and Vacuum
Auto-Fill
This procedure is for assemblies with a Vacuum
Tree Manifold, Agitator, and Auto-Refill. See F
on page 18 for part references.
1. Press the Select Operating Mode button (
repeatedly to select Shot, Sequence, or Operator
(Manual) mode.
2. Close the shut-off ball valves at the base of the
tanks.
3. If the tank lid requires a desiccant dryer or nitrogen
pump installed, install one into the top ball valve of
the vacuum tree manifold (1015).
4. Close the top ball valve of the vacuum tree
manifold (1015).
5. Attach vacuum pump to the bottom ball valve of the
vacuum tree manifold (1015) then open the ball
valve.
6. Turn on the vacuum pump.
7. Turn on agitator.
8. Select Manual Auto-Refill mode. See operation
manual referenced at the beginning of this manual
for more information.
9. Press the Initiate Auto-Refill button (
Active Shot/Sequence button (
Operating Mode button (
312394C
. 5
IG
)
). The
) and Select
) will each change to
the Auto-Refill Tank Select button (
valid Auto-Refill mode is enabled for both tanks.
10. Press the appropriate Auto-Refill Tank Select button
or buttons ( and/or
refill.
11. Press the Initiate Auto-Refill button (
Enter button ( ) to confirm.
12. If necessary, press the Abort/Cancel button (
to cancel auto-refill.
If an auto-refill is aborted or times out, the software
will not initiate a new auto-refill until a manually initi-
ated auto-refill has completed. To complete a man-
ually initiated auto-refill after an aborted or timed
out auto-refill, restart at step 2.
CAUTION
If an auto-refill is stopped and not restarted as
described in the previous note, the pumps may be run
dry and chemical crossover at the valve may occur.
13. Continue to de-gas for sufficient time to de-gas the
material.
14. Close bottom ball valve of the vacuum tree
manifold (1015).
15. Turn off the vacuum pump.
16. Open the top ball valve of the vacuum tree
manifold (1015).
CAUTION
Operating the tank after the vacuum de-gas proce-
dure without the top ball valve open will result in pump
cavitation, off-ratio conditions, and possible collapse
of the tank.
17. Open the shutoff valves at the base of the tanks.
Setup
or ) if a
) to select the tanks to
) or the
)
19