![background image](http://html1.mh-extra.com/html/graco/ecoquip-300/ecoquip-300_operation-repair-and-parts_2251536014.webp)
20. Open the abrasive ball valve.
NOTE:
NOTE:
NOTE: Make sure the pot pressure returns to the
initial setting (it will not return to the initial setting
if the metering valve is closed).
21. Engage the blast control switch and begin
blasting.
NOTE:
NOTE:
NOTE: You may have to wait 1–2 minutes for the
abrasive material to reach the nozzle.
NOTE:
NOTE:
NOTE: Pot pressure and blast pressure should
equalize during blasting. Only set pot pressure
with the abrasive ball valve closed. Never adjust
pot pressure while blasting.
22. Slowly adjust the abrasive meter valve while the
abrasive is blasting from the nozzle. Typical
adjustment ranges from 1/8 to 1/4 turn open.
NOTE:
NOTE:
NOTE: The DataTrak can be used to assist in
setting the pump cycle rate. Optimal abrasive
media consumption typically occurs with the
cycle rate set at 7–10 cycles per minute.
8
8
0
0
0
0
0
8
3
0
0
0
9
NOTE:
NOTE:
NOTE: Use a piece of test material similar to
what you will be blasting.
NOTE:
NOTE:
NOTE: Always start as gently as possible and
then increase the blast force as necessary to
clean without doing any damage to the substrate.
When properly set, the pump should cycle 7-10
times per minute. High production rate users
may need to increase cycle rate above 10 cycles
per minute.
NOTE:
NOTE:
NOTE: Close the abrasive ball valve whenever
you stop blasting for more than 2-3 minutes.
This will help to extend the service life of the
diaphragm valve.
14
334143C
Summary of Contents for EcoQuip 300
Page 5: ...Notes Notes Notes Notes 334143C 5...
Page 34: ...Parts Parts Parts Parts EQ300 EQ300 EQ300 and and and EQ600 EQ600 EQ600 34 334143C...
Page 36: ...Parts Enclosure Enclosure Enclosure 12 Torque fitting to 35 40 ft lb 47 54 N m 36 334143C...