Operating Instructions
1-9DEZ
Blast Wheel Replacement
August 2005
9.1 Blast Wheel Replacement
WARNING: THE 1-9DEZ MUST BE PLACED IN THE MAINTENANCE MODE (SEE
SECTION 1.2) PRIOR TO ATTEMPTING TO INSPECT, CHANGE, OR ADJUST THE
BLAST WHEEL.
See Section 3 and drawing 421-0001 for parts identification
1. Loosen the two control cage clamps that secure the feed spout and control cage.
2. Remove the feed spout and the control cage.
3. Outline the area around the control cage bracket with a marking pen or pencil. This
will allow for easier alignment when reinstalling this part later during this procedure.
Remove the four mounting nuts, flat washers and lock washers that secure the
control cage mounting assembly to the blast housing. Do not loosen any other
screws on the control cage mounting assembly since they are used to set the gap
between the blast wheel and the control cage. Remove the control cage mounting
assembly.
4. Remove the arbor nut and remove the blast wheel.
5. Check the wheel drive hub for wear and replace if necessary.
6. Install new blast wheel using the arbor nut that is included in the wheel kit. Check
the two drive pins on the drive hub for wear and replace if necessary. Be sure that
the new blast wheel is seated properly on the wheel hub before tightening the socket
head cap screw.
7. Reinstall the control cage bracket to the blast housing using the outline made before
removing the assembly.
8. Install the new control cage that was included with the wheel kit. Rotate the wheel
by hand to be sure the control cage and the wheel do not make contact. The initial
window setting for the control cage should be between 9:30 and 11:30.
9. Reinstall the feed spout and band seal that connects the feed spout and abrasive
valve.
10. Start the grinder momentarily to check for good balance and proper clearance before
shot blasting. Place back in “Maintenance Mode” and readjust if necessary.
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Summary of Contents for 1-9 DEZ
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