Set Point
When the controller is not firing a program, it is
running in Single Set Point. You can set the Single Set
Point for room temperature, and the elements will stay
shut off. Or you can set the Single Set Point for any
temperature you want up to the kiln's rated tempera
ture. The controller will hold your kiln or furnace at that
temperature indefinitely. We'll explain this more fully
under "Firing."
In Single Set Point, the normal display is the furnace
temperature. This shows in the top part of the display.
The bottom of the display is blank. Whenever the bottom
display is blank, you know you are viewing the actual
furnace temperature.
When you press the
DISP
key,
SP
appears in the bottom
of the display and the Single Set
Point temperature appears in
the top display. SP means set
point. The SP temperature may
differ from the furnace's actual
temperature. If so, the control-
1
�p
ler is firing the elements or has shut them off to make
the furnace temperature the same as the Single Set
Point temperature.
When you press
DISP
again,
DEV
appears in the bottom of
the display, and the top of the
display shows the number of
degrees off the furnace is from
reaching the Single Set Point.
Press
DISP
again, and
OUT
appears in the bottom of the dis
play. The top of the display
shows the percentage of time
that the elements receive
power. (At 100%, elements stay
on all the time.)
How do you get back to the
1
1
,nnnF
IUUU
,-"
, T
UU I
normal idle temperature display? Just leave the display
alone for a minute. It will switch back to normal display
from
SP, DEV
or
OUT
automatically. Or you can press
SETUP,
then
DISP.
FIRING
Three
to Fire Your Controller
The controller is always trying to maintain a certain
temperature inside your kiln or furnace. This tempera
ture is called the set point. The controller is either firing
a program, or it is in Single Set Point. So whenever the
controller is plugged in and receiving power, it is always
working. It is never idle.
The UDC 2000 controller has three methods of firing
your kiln. The first method is with the Single Set Point.
In this mode, the controller has one temperature that it
maintains your furnace at.
The second method is with the SPPROG program.
SPPROG is a 12-segment program. It uses six ramps
FIRING
and six soaks. The SPPROG program is the heart of the
controller.
The third method· is with the SPRAMP program.
SPRAMP is a single-ramp program.
The controller is either in a program (SPPROG or
SPRAMP), or it is in Single Set Point. When the control
ler is out of the SPPROG and SPRAMP programs, it is
automatically in Single Set Point.
Set Point
The controller goes into Single Set Point right after
you plug it in and also after. it has finished a firing
program. In Single Set Point, the controller will main
tain your furnace at the Single Set Point temperature.
Most people would want the furnace to be "off' when not
running a program, but some people need their furnaces
to stay on at a certain temperature constantly (glass
blowers, heat treaters, etc). You can adjust the Single
Set Point for room temperature or any temperature up
to the maximum your furnace or kiln is rated for.
Here is how to change the Single Set Point from the
normal temperature display:
1.
The normal temperature dis-
play has a blank bottom display.
Press the
DISP
key; you'll see a
, n F
temperature in the top of the
I U
display with
SP
in the bottom
� p
display.
SP
(set point) is the
temperature the furnace or kiln
will maintain.
2.
Press the arrow keys to change the
SP
temperature
displayed. The furnace will automatically begin heating
until it reaches the
SP
temperature.
3.
To change the display back to the normal furnace
temperature, press the
SETUP
key and then the
DISP
key. Now you can watch the furnace temperature
change.
When the furnace reaches the Single Set Point
temperature, it will idle at that temperature indefmite
ly. If your firing is complete when the furnace reaches
the Single Set Point, tum the element on/off switch
OFF.
the SPPAOG
Using a Factory-Set Firing Schedule
If your UDC 2000 controller was pre-programmed at
the factory to fire on your schedule, you will find a
filled-in ramp/soak chart with this
man
ual. Here's how
to fire a pre-programmed controller:
1.
Set up and load your furnace or kiln according to its
manual. Close the door or lid.
2.
Plug the UDC 2000 into its wall receptacle. Tum the
toggle switch to the ON position.
3.
Press the
RUNIHOLD
key on the controller. The
display will show the furnace temperature, alternating
with
RUN.
If you are using the furnace for wax elimination,
you must remove the wax and wax tray before the
furnace heats above 350· F. Do not remove the
wax
until the furnace has been at 350 • F. for at least half
an hour.
6
