FIRING
your furnace to begin firing at
4
a.m. When you arrive
in your studio, your furnace will have only one hour to
go before the firing is completed.
When programming a delay fIre for wax elimination,
you must be present to remove the wax before the
temperature rises above 3500
F.
Otherwise you will ruin
your furnace!
You must be near the furnace near the end of a firing
to make sure the furnace turns off. If something goes
wrong and the furnace does not shut off at the end of the
firing, your furnace could be damaged or your ware
ruined. Overfire is not covered under warranty, no mat
ter what the circumstances.
1.
To program a delay, begin the firing schedule with
segment two.
2.
Set the temperature of segment two
(SG2 SP)
to the
temperature you want during the delay. If you want the
kiln to be cold during delay, set the temperature at
O.
Set the soak time of segment two
(SG 2 TI)
for the
number of hours and minutes of delay.
How to Store More Than One Firing Schedule in
the SPPROG Program
You have 12 segments to work with. If you use fewer
than 12 segments for a firing, the remaining segments
can be used to store a different firing schedule. For
instance, if your first firing schedule uses only two
segments, you have ten segments left for other firing
schedules.
Let's say your firing schedule uses segments 1 and 2.
Read "Entering Your Firing Schedule Into the Control
ler" to turn on the Function Message
SPPROG.
Before
firing the schedule, make sure the Start Segment
(STRSEG)
is set at 1 and the End Segment
(ENDSEG)
at 2.
Let's say that on segments 3 through
6,
you have a
second firing schedule. If you were to
run
that one, you
would set the Start Segment at 3 and the End Segment
at
6.
You switch from one fIring schedule. to another with
the
STRSEG
and
ENDSEG
Function Messages.
the SPRAMP
1.
Follow the first three steps of "Entering Your Firing
Schedule Into the Controller" on page
8.
Only instead of
opening
SPPROG,
open
SPRAMP.
Use an arrow key
to get
SPRAMP:ENAb.
Don't try to open
SPRAMP
from
SET:SPRAMP.
2.
Once you have opened the
single-ramp schedule, you'll
see
ENAb:SPRAMP.
Press
the
FUNC
key to get
TI MIN
(time in minutes). Enter
minutes, from 0 to 255.
(A
0
setting will turn the kiln on
at high speed when you begin
firing with this program.)
1
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Enter.total time in minutes
that the kiln should take to
reach firing temperature.
Maximum is 255 minutes.
In the
SPPROG
program, you can enter ramp time
in minutes or in degrees of rise per hour. In the
SPRAMP
program that you are in now, you can
enter only minutes.
9
3.
Press
FUNC
again to get
FINLSP
(final set point). Use
the arrow keys to enter the
temperature you are firing to.
The furnace is set for 10000 F. in
this example.
4.
Press
DISP
to get back to the
normal temperature display.
1
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Press
RUNIHOLD
to begin the firing.
After the furnace completes the ramp, it will remain
indefinitely at the temperature you entered.
How to Stop the Furnace While Firing
SPPROG or SPRAMP
If you want to interrupt a firing program, tum the
on/off switch to the OFF position. This shuts off power
to the elements.
Pressing the
RUNIHOLD
key will pause the firing
and place the furnace on HOLD. The furnace
will
then
maintain the temperature it was at when you pushed
RUNIHOLD.
When you push
RUNIHOLD
again, the
furnace will start fIring the same schedule again, taking
up where it left off.
To shut off power to the elements, turn the toggle
switch to the
OFF
position. Pressing the
RUNIHOLD
key only holds the furnace at its cur
rent temperature.
To end a firing schedule before its completion, press
RUNIHOLD
to put the furnace on HOLD. Then Press
the
SET
UP
key twice to get to the
SET:SPRAMP
Set-Up Mode. Press
FUNC
once and you
will
see the
fIring schedule you're using, with
ENAb
in the top of
the display. Press an arrow key to make
DIS
(disable)
appear in the top of the display, which will tum off the
firing schedule. Press
DISP;
this returns you to the
normal temperature display.
Then from the normal temperature display, you can
go back into the
SET:SPRAMP
Set-Up Mode and start
a different firing schedule, if you want. Just open either
the 12-segment or single-ramp program with the arrow
key.
How to Tell if There Was a Power Failure
When you program a delay in firing, you will probably
be away from the furnace for much of the fIring. When
you come back to the furnace, how do you know if there
was a power failure? This is important, because
if
there
was a power failure, your ware may not have fired to
maturity.
Return to the furnace before
the firing program is to finish. If
the controller is in normal
temperature display when you
return, you had a power failure.
If there is a power failure
1
during a fIring, the controller
Normal temperature dis
will exit from the firing program
play (blank lower display).
and go back to the normal
temperature display. So
if
the controller displays nor
mal temperature when you return to the furnace, either
there was a power failure, or the firing schedule fired to
completion.
