Troubleshooting guide

23
Pro Series Furnace Operations Manual
Porcelain on Titanium
(Pro 100)
HEAT RISE
HOLD TIME
INERT
COOLING
COOL
TIME
VACUUM PURGE/ARGONPURGE/
ARGON
ENTRY
TIME
SOAK TIME
Titanium Firing Cycle Program
(Pro 100 only)
The Pro 100 includes
hardware and a special
firing cycle for titanium
to porcelain.
Because titanium will
oxidize, the Pro 100
has a special firing program with
Argon for firing porcelains to titanium.
In its titanium firing cycles the Pro 100 automatically
purges and maintains an inert condition for firing porcelain
to titanium.
Before running this program type, Argon must be properly
hooked up to the furnace. See page 33 for details.
Procedure:
1. Press the Change Program button.
2. Turn the Select Knob until ADD A PROGRAM
is displayed.
3. Press the Next button to add a program.
4. ADD: will be displayed. Turn the Select Knob to find
the program number you want to add your new
program into. If you select a program number that
already has a program entered, you will overwrite the
existing program. Press the Next button.
10. SOAK TIME X:XX is displayed. Most operators measure
the time it takes to purge to an inert condition and set
the soak time to this amount. Press the Next button.
11. HEAT RATE XXC/M is displayed. (Turn the Select Knob
to change the heat rate.) Press the Next button to enter
your change or merely skip to the next parameter when
no change is selected.
12. FINAL TEMP XXXC is displayed. Press the Next button
to skip or turn the Select Knob to change the final
temperature, then press the Next button to go to the
next parameter.
13. HOLD TIME X:XX is displayed. Hold time includes the
total time at the final temperature under vacuum plus
under air. Press the Next button.
14. LOWER TABLE XXXC is displayed. The furnace will
remain in an inert condition with the table in the up
position until this temperature is reached in the
cooling step, then the muffle will be exposed to
air and the table will be opened.
15. COOL TIME X:XX is displayed. This is the time to lower
the table to the fully down position. The table will be
lowered in steps evenly spaced during cool time.
Note: Cool time will not start until the lower table
temperature has been reached.
Press the Next button.
16. USE VACUUM - NO is displayed. Turn the Select Knob
to YES to use vacuum in your program, NO if you do not
wish to use vacuum in this program. Selecting NO will
force the furnace to purge to an inert condition at the
beginning of the soak stage of a program and maintain
that inert condition for the remainder of the program.
Selecting YES will force the furnace to purge to an
inert condition at the beginning of the soak stage of
a program, pull a vacuum at the appropriate time, and
purge on again to an inert condition when the vacuum
is released. Press the Next button. If your selection in
this step was NO the display has returned to the Ready
Select Menu screen and you are finished adding this
program. If your selection in this step was YES
continue with the next step.
17. VAC LEVEL XXCM is displayed. Turn the Select Knob
to the vacuum level desired. Press the Next button.
18. DURING HEAT UP or SOAK TIME. During heat up will
start the vacuum at a temperature during the heat
up step of the program (similar to a normal porcelain
cycle). Soak time will start the vacuum during the soak
time period. Some operators prefer to select soak time
and set the vacuum start time to a time after the furnace
has purged, and they set the soak time long enough for
the furnace to purge and pull a vacuum before starting
the heat rise step. Press the Next button to continue.
PORCELAIN TYPE:
1 TITN-
Figure 26
5. Turn the Select Knob to find the firing cycle for TITN.
Press the Next button.
6. ENTER PROG NAME will be displayed on the top
line and the program number with the program type
selected previously will be on the second line. Turn
the Select Knob to change the character over the
underline. Press the Next button to enter the character.
ENTER PROG NAME:
1 TITN-
Figure 27
7. Turn the Select Knob to the entry time you require.
This is the time to raise the table into the furnace. Any
program delay entered under Special Function must
expire before entry time begins. The time is displayed
in minutes: seconds.
8. ENTRY TEMP XXXC is displayed. This is the tempera-
ture at which you wish the furnace to be when the
porcelain enters. Press the Next button.
9. SOAK TEMP XXXC is displayed. The furnace will rise
to this temperature and hold for the soak time entered
in the next step, before continuing with the rate rise
(heat rate) step.
15946 Pro Series English.indd 23 5/9/08 2:51:11 PM