Vacuum De-Gas - Graco PR70 Instructions Manual

Setup
Stainless Steel Tanks
2102
ti12494a
1. Locate the calibration button on the sensor (2101)
closest to the electrical connector through one of
the four holes of the sensor well (2102).
2. If the calibration button cannot be seen through one
of the four holes in the sensor well, rotate the sen-
sor.
a. Loosen the sensor well cap (2103).
b. Rotate sensor until the calibration button can be
seen through one of the four holes in the sensor
well.
c. Tighten sensor well cap (2103).
d. Press and hold the button down with the ball
end of an allen wrench for two seconds. The
light will flash slowly and then go out.
3. Test for proper sensor function.
a. Loosen the sensor well cap (2103).
b. Back the sensor out of the well. The sensor
should sense the tank wall.
Accumulators
The accumulator low level sensors cannot be calibrated.
To ensure proper accumulator sensor operation ensure
the sensor is located in the correct location as described
in the Level Sensors installation section, page 14.
18
2101
2103
2104

Vacuum De-gas

This procedure is for assemblies with Vacuum Tree
Manifold and No Agitator or Auto-Refill. See F
1034
F . 5
IG
1. Disable machine movement by pressing the
Machine Disable Mode key (
2. Close the shut-off ball valves at the base of the
tanks.
3. If the tank lid has a fill port, turn off any systems that
might refill the tank during the vacuum de-gas pro-
cedure.
4. Close the fill port ball valve (1034).
5. 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).
6. Close the top ball valve of the vacuum tree
manifold (1015).
7. Attach vacuum pump to the bottom ball valve of the
vacuum tree manifold (1015) then open the ball
valve.
8. Turn on the vacuum pump.
9. Continue to de-gas for sufficient time to de-gas the
material.
10. Close bottom ball valve of the vacuum tree
manifold (1015).
. 5.
IG
1015
ti12560a
).
312394C