Grizzly G9983 Manuel d'utilisateur télécharger pdf (Page 40)

-38- G9983 15" Open-End Wide-Belt Sander

Air System

Various functions on the Model G9983 are con-

trolled through the air system. Since this is a com-

plex network of hoses and valves, please take

some time to familiarize yourself with each item

so you can better understand your machine dur-

ing adjustments.

The illustration below follows the air travel

through the machine to familiarize you with how it

works. Match the letters in the text with those in

the illustration to learn more about each function.

1. The air flows into the machine at the pres-

sure regulator (A). This should be adjusted to

75 PSI.

2. The solenoid valve (C) controls the brake

caliper (B) when signaled by the emergency

stop switch or the limit switches.

3. The switching valve (E) controls the vertical

cylinder (D) which raises/lowers the top roller

(M) to tighten/loosen the sanding belt.

Air Inlet

4. The valve (G) controls the air flow volume

that goes to the air eye fork (F), which con-

trols the belt oscillation return.

5. The diaphragm (H) actuates the switching

valve (I) depending on whether air is coming

from the eye fork (F) or the pressure regula-

tor (A).

6. Switching valve (I) actuates the diaphragm

(J), which controls oscillation arm (K), which

in turn, moves eccentric shaft (L), which

makes top roller (M) shift back and forth to

control belt movement during operation.

7. Valve (O) controls the speed at which the

belt moves back and forth.

8. Knob (N) allows you to rotate the eccentric

shaft (L) to balance the oscillation timing so it

takes the belt the same amount of time to

move in one direction as it moves in the other

direction.

This is an illustration of the air control system.

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Grizzly G9983 Manuel d'utilisateur Page 40