Graco 309077, Instructions-Parts List Manual, Page: 30 / 76

30 309077
Operation
Changing Empty Drums
(continued)
6. Place the new drum in the ram:
a. Remove the cover from a drum of appropriate
material.
NOTE:
Whenever drum changes are required, re-
move the cover from the drum of new material
by holding it level and lifting it straight up. Tip-
ping the cover may allow accumulated dirt to
spill into the drum which may result in damage
to the equipment.
b. Remove any other packing from the drum, to
expose the material. Make sure there are no
foreign objects on the material surface.
c. Place the drum under the raised follower plate.
7. Lower the follower into the drum:
a. Move the ram hand valve lever to the DOWN
position.
b. Check the drum position as the follower low-
ers. If necessary, stop lowering the follower
before contacting the drum, and adjust the
drum and/or clamp positions to align the drum
with the follower plate.
c. Continue lowering the follower. As the follower
enters the drum, loosen the air bleed stick.
Loosening the bleed stick allows trapped air
between the follower plate and the top of the
material to escape.
d. When air stops exhausting from the bleed stick
port, replace and tighten the bleed stick.
8. Adjust the ram air pressure for normal operation.
9. Bleed the air from the material pump that was
introduced during the drum change:
a. Place a waste container under the pump bleed
port.
b. Open the bleed port and turn on pump air
pressure.
c. Allow material to flow from the bleed port until
it is air-free.
d. Shut off air to the pump and close the bleed
port.
e. Turn air on to the pump and set the pump air
regulator for normal operation.
10. Resume normal operation.
Shutdown
To shut down the supply unit:
1. On the electrical control panel:
a. Turn OFF the main electrical disconnect.
b. Turn the CONTROL ON switch to OFF.
2. To stop the ram from moving (Fig. 26):
a. Close the ram air lock-out valve (B).
b. Move the hand valve to the OFF position.
This valve shuts off the air supply to the ram
and pump.
WARNING
To reduce the risk of serious injury whenever you
are instructed to relieve pressure, always follow the
Pressure Relief Procedure
(page 26).
3. Relieve the pressure.