Section 7: Service; Troubleshooting - Grizzly G0708 Owner's Manual

SECTION 7: SERVICE

Review the troubleshooting and procedures in this section to fix or adjust your machine if a problem devel-
ops. If you need replacement parts or you are unsure of your repair skills, then feel free to call our Technical
Support at (570) 546-9663.
Operation
Intermittent, 1. Suction tube has been clogged from a
clogging, or no
contaminant.
media spray at
the blast gun; or
striping is occurring
2. Incorrect media.
on the workpiece.
3. Worn or incorrect blast tip.
4. Low air flow or pressure up to cabinet.
5. Blasting system has incorrect air flow or
pressure.
6. Cabinet is overloaded with media.
7. Media metering valve is out of adjustment.
8. Blast gun is damaged or has bad seals.
9. Foot valve is damaged, clogged, or has
leaks.
Model G0708 (Mfd. Since 1/15)

Troubleshooting

1. Cover blast tip and press the foot pedal to use
air pressure to purge the foot valve and suction
system. Repeat this step periodically during
blasting operations.
2. Verify that the media chosen is the correct material
for your blasting operation (Page 25), and that
the media is not worn out or contaminated with
moisture. Screen or replace media as required.
3. Disconnect machine from air and inspect blast
tip for wear and rotate ⁄ -turn to unworn tip area.
1
4
Replace or install with correct blast tip.
4. Troubleshoot air supply system and verify the
compressor, supply lines, moisture separators, and
air dryers have the correct air flow and are in good
working order.
5. Adjust the air regulator on cabinet to maintain
correct air pressure and flow, and verify no hose
kinks or clogs exist.
6. Remove media but leave just enough for blasting
operation.
7. Turn the metering valve adjustment screw
clockwise in small increments until proper media
output is achieved (Page 22).
8. Disassemble blast gun, clean and reseal.
9. Clean and reseal foot valve.
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