Then close the lid. Wear firing safety glasses and
protective gloves. Lift the side handle on the lid.
Turn off the power when the glass or ceramic ware
is finished. Keep the lid closed and do not remove
the ware until the kiln has cooled to room tempera-
ture.
How to Hold a Temperature
Some materials, such as silver clay, need a temperature
hold. (This means keeping the temperature steady for a
specified period.)
A low temperature hold (i.e. 200° - 300°F) is more difficult
to maintain than higher temperature holds (1400° - 1700°F).
When holding at a low temperature, heat the kiln slowly.
Otherwise the temperature may overshoot the desired hold.
To hold the temperature, sit with the kiln and make very
small adjustments to the switch every 3 minutes or so. With a
little practice, you will sense when to adjust the switch before
the temperature begins to drift from the desired hold.
Installing the Thermocouple
You will find a rod, called the thermocouple, packaged
with your pyrometer. The thermocouple senses tempera-
ture and sends a signal to the pyrometer. If the tip of this rod
is pushed out of the firing chamber, the pyrometer will as-
sume that the firing chamber is cooler than it actually is.
The thermocouple should extent into the firing chamber
by ¾” - 1”. Insert the thermocouple into the kiln through the
pre-drilled hole
near the hinge.
When the ther-
mocouple is posi-
tioned properly,
m a k e a p e n c i l
mark on the out-
side of the ther-
mocouple that is
flush with the kiln
case. During fir-
ing, the pencil
mark will indicate
that the thermo-
couple is positioned in the firing chamber by the correct dis-
tance.
Replacing a
Switch
UNPLUG kiln.
Remove the screws
on the sides of the
switch box that hold
it to the kiln. Gently
lift the box away
from the kiln.
Pull off the switch
knob with finger-
tips. Remove the
single nut from the
front of the defec-
tive switch. Remove
the switch.
Hold the new switch
at the side of the de-
f e c t i v e
s w i t c h ,
aligned in the same
direction. Remove
and transfer one
wire at a time from
the old switch to the
new one. Make sure
each connection is
t i g h t .
R e p l a c e
push-on connectors
and wires damaged
by heat. If wire con-
nectors do not fit
snugly on terminals,
gently squeeze the
end of the terminal
with pliers.
Put the new switch
i n p l a c e m a k i n g
sure it is right side
up. Reinstall the shaft nut checking to be sure it is
not backwards. Tighten the switch so that it will not
turn during operation.
Check to see that wires are not touching kiln case or
the element connectors. Wires touching element
connectors or the kiln case will burn out. Move
switch box into place and reinstall switch box
screws.
2
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