22
Pro Series
Furnace Operations Manual
17.
USE VACUUM - YES is displayed. Turn the
Select
Knob
to YES to use vacuum in your program, use
NO to not use vacuum in this program. Press the
Next
button.
If the selection in this step was NO, the display will
be returned to the READY SELECT MENU screen and
adding this program will be completed. If the selection
in this step was YES, continue with the next step.
18. VAC LEVEL XXCM is displayed. Select the vacuum
level desired. Press the
Next
button.
19. The display will be similar to the example above. Turn
the
Select Knob
to select 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). DURING SOAK
TIME will start the vacuum during the soak time period.
Press the
Next
button.
Note:
Some operators prefer to select soak time to
start the vacuum pump to allow the vacuum pump to
pull a vacuum before the heat rise starts.
20. START VAC XXXC or
START VAC X: XX is displayed,
depending on the previous selection. If DURING HEAT
UP was selected, turn the
Select Knob
to desired
temperature for vacuum to begin. If SOAK TIME was
selected, turn the
Select Knob
to select the time
when the vacuum begins. Press the
Next
button.
21. VACUUM RELEASE - DURING HEAT UP is displayed.
Turn the
Select Knob
to select DURING HEAT UP,
DURING HOLD TIME, DURING COOLING. DURING
HEAT UP will release the vacuum at a specific temper-
ature during the heat rise step. DURING HOLD TIME
will release the vacuum after a specific time during
the hold time step. DURING COOLING will release the
vacuum at a specific temperature after the final hold
during the cooling step. Press the
Next
button.
If DURING HEAT UP was selected, the screen above
is displayed. Turn the
Select Knob
to the temperature
of the vacuum release. Press the
Next
button.
The program has been saved and the display will return
to the Ready Select Menu screen.
If DURING HOLD TIME was selected, the screen above
is displayed. Turn the
Select Knob
to specify when
to release the vacuum. In this example the furnace will
hold vacuum for 30 seconds into the hold time step.
Press the
Next
button.
The program has been saved and the display will
now return to the Ready Select Menu screen.
vAC START WITH ?
DURING HEAT UP
Figure 22
DURING HEAT UP
RELEASE vAC
Figure 23
DURING HOLD
TIME RELEASE
Figure 24
DURING COOLING
RELEASE vAC
Figure 25
If DURING COOL TIME was selected, the screen
above is displayed. Turn the
Select Knob
to choose
the vacuum release temperature. The furnace will hold
vacuum through the heat rise step, the hold time step,
and will release vacuum at the specified temperature
during the cooling step. Press the
Next
button.
The program has been saved and the display will
return to the Ready Select Menu screen.
15946 Pro Series English.indd 22
5/9/08 2:51:11 PM
