sideways. If you loosen the screws completely, the
guide plate is more difficult to adjust.
After the rod is centered, securely tighten guide
plate screws.
Test the full travel of the actuating rod. Watch the
actuating rod inside the kiln as you move the re-
lease claw up and down. The actuating rod
should be free to move within the tube without
touching the sides.
If the rod does not fall freely to the bottom of the tube,
check the guide plate to see that its slot is parallel to the
direction of travel of the release claw. If not, straighten the
guide plate and readjust rod centering. Be sure to
retighten the two screws securely.
Note:
As the Kiln Sitter develops wear, the actu-
ating rod may no longer fall freely within the tube.
This is usually caused by a corroded tube assem-
bly. Replace the tube.
Trigger Adjustment
Inside the kiln, slide
the firing gauge
over the end of the
actuating rod and
the two slotted
cone supports. The
actuating rod fits
into the firing
gauge hole.
Lift the weight on the outside of the Kiln Sitter all
the way to the fully raised position. At the end of
the weight is the adjustable trigger. With the fir-
ing gauge in place, the
trigger should just clear
the release claw, coming
as close as possible
without touching. If the
trigger is too high to
clear release claw or if it
is too low, loosen the set
screw in the center of
the weight, move the
trigger up or down until
it just clears the release
claw, and retighten the
set screw.
Note:
Check the trigger
adjustment with the fir-
ing gauge after every 12
firings.
Caution:
If the set screw is too loose, the trigger
will slide out of adjustment with repeated use.
But if the set screw is too tight, you can strip out
the threads.
Release Claw Adjustment
After you have adjusted the trig-
ger height, check the amount of play
between the trigger and the release
claw. Raise the weight and lower the
release claw over the trigger. Look
at the Kiln Sitter from the side to
check the play between the trigger
and the release claw. It should be
1/16" (2 mm). To adjust, loosen the
setscrew on top of the release claw.
Test the Mechanical Operation
With all kiln switches turned OFF, raise the
weight and lower the release claw over the trig-
ger. The weight MUST NOT be able to stand up
alone, and the trigger MUST lean against the re-
lease claw.
With your other hand, hold up the end of the ac-
tuating rod inside the kiln. Let go of the release
claw. The release claw should hold the weight up
while you hold up the end of the
actuating rod inside the kiln.
Set the Limit Timer clock.
Push the plunger all the way in
until it locks into position.
(The Limit Timer clock
MUST be set before the
plunger will lock.)
From inside the kiln, move the
actuating rod slowly downward
until the claw releases the trigger. The weight
should fall all the way to the bottom, releasing the
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