Operator’s Manual
Rev 05/12/21
pg. 33
Check the Agitation System
The agitation system should be checked every three to six months or if fiber values are higher than normal or
inconsistent. To check the agitation system, follow the steps below.
Poor agitation will cause higher analysis values and poor repeatability.
1.
Check the function of the agitator motor.
a.
Place a bag suspender with all 9 trays in the vessel along with
the bag suspender weight, but add NO water.
b.
Turn the instrument’s Power Switch to the ON position. The
Display will light.
c.
Press the UP/DOWN arrow buttons on the Keypad until you see
“Select Flush” on the Display.
d.
Press ENTER on the Keypad to turn the agitator on.
e.
Verify that the bag suspender moves up 16 times in 15 seconds
(65 rpm).
f.
Press ENTER on the Keypad to turn the agitator off.
2.
Mark the agitator stroke.
a.
Leaving the bag suspender in the vessel, remove the bag suspender
weight.
b.
Remove the top from a dark felt tip marker and lay the marker
horizontally on the top of the bag suspender so that the tip touches
the inside wall of the vessel.
c.
With constant, light, downward pressure on the marker, hold the pen
in place so that it rides the top tray up and down once the agitation
has begun.
d.
With “Select Flush” on the Display, press ENTER on the Keypad to
begin agitation.
e.
Allow the bag suspender (& pen) to move up and down three or four
times as the pen marks the vessel wall.
f.
Press ENTER on the Keypad to stop the agitation.
3.
Measure the agitator stroke.
a.
Turn off the power switch.
b.
Remove the pen and the bag suspender from the vessel.
c.
Measure the mark on the vessel wall. It should be 1⁄2 inch in length.
4.
Replace a worn Kynar Tip (if necessary).
If the motion is less than 1⁄2 inch, you will need to replace either the
Bag Suspender Tip (Kynar Tip w/ washer Assembly - part # 11.5) or
the agitator (Agitator Assembly - part # 8.9) because the old disc has
flattened.
Worn tip
Keypad
Good tip
Display
Bag Suspender with trays
Bag Suspender Weight
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