![background image](http://html1.mh-extra.com/html/national-flooring-equipment/3390/3390_instruction-manual_3371797013.webp)
Page 13
GENERAL OPERATION
OPERATING MACHINE
1. Verify that competent personnel have read and understand the safety information in this manual and
are following all safety instructions and programs required by their company and the worksite. Verify
that the #3390 in on a level, clean, debris-free and dry surface.
2. Connect hose from dust collector to #3390. Verify clamps are secure. Verify that the #3390 is on a
level, clean, debris-free and dry surface.
3. Verify dust bin in dust collector is empty and hose is free of debris.
4. Verify the switch on the control panel on the #3390 is set to the OFF position.
5. Verify the switch on the control panel on the dust collector is set to the OFF position.
6. Insert plug from #3390 into 110 volt electrical outlet after confirming proper voltage with a voltmeter.
7. Insert plug from the dust collector into 110 volt electrical outlet. Use an outlet which is operated by a
separate circuit breaker from the outlet being used to power the #3390. Confirm voltage of electrical
outlet with a voltmeter.
8. Any hardwiring or circuit breaker changes should be performed by a licensed electrician.
9. Before loading shot into machine turn the switch on the #3390 and the dust collector to the ON
position for two minutes to verify circuit breaker will not trip.
10. Disconnect hose from the #3390 to verify dust collector has proper suction.
11. After verifying proper suction reconnect hose to the #3390.
12. Check seals on #3390 to verify seals are set at the proper height. The seals should be rubbing the
surface of the concrete or steel.
13. Place a handful of steel shot in front of the #3390.
14. Push #3390 over the handful of steel shot. This will attach the steel shot to the magnetic seals an
prevent shot from escaping from #3390.
15. Pour steel shot into #3390 shot hopper to the bottom of the screen.
16. Turn switch on #3390 to the ON position, squeeze handle to open shot valve and push #3390. Verify
blast pattern is uniform. If blast pattern is not uniform, release handle to close shot valve and turn
switch on #3390 to the OFF position and go to step 17 below.
17. Adjust the control cage.
18. Turn switch on #3390 to ON position, squeeze handle to open shot valve, push #3390, and verify
blast pattern is uniform.
19. Once blast pattern is uniform start shotblasting.