Graco 24C769, Instructions-Parts List Manual

Page: 14 / 28

Operation
14 3A0233B
6. Remove bleed stick from platen bleed port (D).
7. If drum has a plastic liner, pull it over edge of drum.
Secure liner with tape wrapped around circumfer-
ence of drum.
8. Set the director valve (AC) to DOWN and lower the
ram until fluid appears at the top of the platen bleed
port (D). Adjust ram air regulator (AB) as needed.
Set the director valve (AC) to neutral and close the
platen bleed port (D). 2-Button Interlock: If system
has this feature, press and hold both buttons to start
lowering the ram. See F
IG
. 2, page 7.
Start and Adjust Pump
1. Connect pump outlet fittings and hose (not sup-
plied).
NOTE: Be sure all components are adequately sized
and pressure rated to meet the system’s require-
ments.
2. Be sure the pump air valve is closed. Then set the
ram air regulator (AB) to about 50 psi (0.35 MPa, 3.5
bar). Set the director valve (AC) to DOWN. Start the
pump as explained in the separate pump instruction
manual.
3. Keep the director valve (AC) set to DOWN while
pump is operating.
NOTE: Increase air pressure to the ram if the pump
does not prime properly with heavier fluids.
Decrease air pressure if fluid is forced out around
the top seal or platen.
Change Drums
1. Stop the pump.
a. Push in the air motor slider valve (AF) to stop
the pump.
2. Raise the platen out of the drum.
a. Set ram director valve (AC) to UP to raise the
platen (B) and immediately press and hold the
blowoff air button (AG) until the platen (B) is
completely out of drum. Use minimum amount
of air pressure necessary to push the platen out
of the drum.
3. Follow steps 4-8.
4. Release the blowoff air button and allow the ram to
rise to its full height.
5. Remove empty drum.
6. Inspect platen and, if necessary, remove any
remaining material or material build–up.
7. Place full drum on ram base.
8. Lower the ram and adjust the position of the drum
relative to the platen. See Start and Adjust Ram on
page 13.
F
IG
. 11
D
B
ti10543a
Excessive air pressure in the material drum could
cause the drum to rupture, causing serious injury. The
platen must be free to move out of the drum. Never
use drum blowoff air with a damaged drum.