Graco EcoQuip EQ200T Operation, Repair, And Parts page 13

13. Turn the selector valve to FILL.
NOTE: The water pump should begin cycling. If NOTE: NOTE:
not, open the pot pressure regulator enough to
cause the pump to run at 60 cpm.
NOTE: The auto vent/purge valve will allow all
NOTE: NOTE:
of the air trapped in the top of the pot to vent.
When air stops venting, the pot pressure gauge
will start to register pressure.
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14. Wait for pot pressure to increase. NOTE:
can take up to several minutes for the pot to
pressurize.
NOTE: The pop-up cannot be pushed down
NOTE: NOTE:
unless all of the pressure in the pot is released
by opening the dump valve.
15. Set the pot pressure 30 psi (2.0 Bar, 0.2 MPa)
higher than the intended blast pressure. Open
and close the dump valve after the pump stalls.
Relieve pot pressure to 40 psi (2.7 Bar, 0.27
MPa) before closing the dump valve. Repeat
until pot pressure is consistent.
16. Turn the selector valve to WASH.
17. Set the blast air pressure 30 psi (2.0 Bar, 0.2
MPa) lower than the pot pressure while blasting.
NOTE: In order to adjust the blast pressure,
NOTE: NOTE:
the blast control switch must be engaged. For
the initial setting, leave the abrasive ball valve
closed.
NOTE: Engage and release the blast control
NOTE: NOTE:
switch each time the blast regulator is adjusted.
18. Turn the selector valve to BLAST.
Operation
NOTE: It
NOTE:
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