Graco Xtreme PFP 16P957, Instructions - Parts Manual

Page: 12 / 34

Supply System Operation
12 3A2798D
Change Drums
1. Close the air motor ball valve (BF) to stop the pump.
2. Press and hold the blowoff air button (BG) then set
ram director valve (BC) to UP to raise the platen (D)
until the platen (D) is completely out of drum. When
the ram exits the pail, release the blowoff air button
to allow the ram to rise to its full height. Use mini-
mum amount of air pressure necessary to push the
platen out of the drum.
3. Remove empty drum.
4. Inspect platen and, if necessary, remove any
remaining material or material build-up.
5. Place full drum on ram base.
6. Lower the ram and adjust the position of the drum
relative to the platen. See
Start and Adjust Ram on
page 11.
Flush
1. Remove platen from pump, then submerge pump
into solvent. To clean platen, gently wipe with sol-
vent.
NOTE: Read notice table in Flush Before
Using Equipment section, page 10.
2. Perform Start and Adjust Ram on page 11 to pres-
surize the pump with solvent.
3. Hold gun firmly against a grounded pail and trigger
gun into pail until clean solvent dispenses.
Shutdown and Care of the Pump
1. Set the ram director valve (BC) to DOWN.
2. Follow the Pressure Relief Procedure on page 10.
3. Follow the pump shutdown instructions in Xtreme
lowers manual. See
Related Manuals on page 2.
Replace Throat Seals
Remove wet cup from displacement pump while
attached to the ram to replace throat seals.
1. Follow the Pressure Relief Procedure on page 10.
2. Remove Quick Coupler .
3. Remove wet cup and packing cartridge according to
instructions in Xtreme lowers manual. See
Related
Manuals on page 2.
Remove Quick Coupler
1. Ensure displacement pump is at bottom of stroke.
2. Follow the Pressure Relief Procedure on page 10.
3. Remove clip (GC), and slide coupling cover (GB) up
to remove coupling (GA).
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.
NOTICE
To prevent material from curing in the system, imme-
diately flush the system when a pressure drop is
noticed during spraying and when done spraying.
GB
GC
GA
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