11
ProPress SP
Furnace Operations Manual
Set Vacuum Level
The factory setting for vacuum is 71 cm of mercury. The
acceptable range is from 28 cm to 74–75
cm of mercury
or 11.0 inches to 30.0
inches of mercury.
If the furnace does not pull a minimum vacuum of 25 cm
within 20 seconds of calling for it, the program will be
aborted and the furnace will display "Vacuum Error.”
Additionally, if the target vacuum level has not
been reached within 3 cm of the vacuum setting by
100 seconds, the program will be aborted and a warning
screen will be displayed, indicating a vacuum error.
(see page 29 for error codes)
If
Continuous VAC Pump
has been selected by using
the Special Functions menu, the vacuum pump will
run throughout the vacuum cycle at full vacuum. If
Continuous VAC Pump
has not been selected, the
vacuum pump will shut off after the target level has
been reached and at least 5 seconds have elapsed. The
vacuum pump will be restarted when the vacuum level
has dropped to 2 cm below the Vacuum setting value.
The furnace uses an
absolute vacuum sensor
. With an
absolute sensor, vacuum adjustments are not necessary
at high altitudes.
To set the vacuum level for all programs do the following:
1. Press the
Menu
button.
2. Select
Special Functions
, push
Selector Knob
OR
press
Next
button.
3. Turn the
Selector Knob
until
SET VACUUM LEVEL
is displayed.
4. Push
Selector Knob
OR press the
Next
button to
look at or change the vacuum level.
5. The current setting will be displayed. Turn the
Selector Knob
to change this value.
6. Push
Selector Knob
OR press the
Next
button to
accept the new value. You will be returned to the
Main Menu automatically when the
Selector Knob
or
Next
button is pushed. The furnace may be set
to display all values using the metric system with
degrees in Centigrade and vacuum in centimeters
of mercury OR to display all values using the
American/English (standard) system of degrees.
Fahrenheit and vacuum in inches of mercury.
Select Constant or
Intermittent Vacuum
Selecting constant vacuum will cause the vacuum pump
to run continuously during the vacuum cycle of a program.
1. Press the Main
Menu
button.
2. Select Special Functions, push the
Selector Knob
OR press the
Next
button.
3. Turn the
Selector Knob
until the display reads
CONSTANT VAC PUMP.
4. Push the
Selector Knob
OR press the
Next
button.
5. Turn the
Selector Knob
to display
YES
or
NO.
A selection of yes will cause the vacuum pump to run
continuously during the vacuum cycle of a program.
Set Displayed Temperature Units
(Celsius or Fahrenheit)
1. Press the
Menu
button.
2. Select
Special Functions
, push the
Selector Knob
OR press the
Next
button.
3. Turn the
Selector Knob
until
TEMP IN C OR F?
is displayed.
4. Push the
Selector Knob
OR press the
Next
button to
look at or change the measurement system in use.
A selection of no will allow the vacuum pump to turn off
and on to maintain the set vacuum level. (Intermittent
Vacuum replenishment)
NOTE: IF INTERMITTENT VACUUM IS SELECTED, BUT
THE VACUUM PUMP RUNS CONTINUOUSLY DURING
THE PROGRAM CYCLE, THE VACUUM LEVEL IS SET
TOO HIGH. THE ACTUAL LEVEL IS WITHIN 3% OF THE
SELECTED LEVEL, BUT THE PUMP CANNOT REACH
THE FULL SELECTED LEVEL. THIS CAN BE CORRECTED
BY REDUCING THE VACUUM LEVEL.
5.
TEMP CENTIGRADE?
Will be displayed. Turn the
Selector Knob
to select
YES
for metric Centigrade units,
or if you select
NO
the furnace will automatically set to
Fahrenheit units (American/English) (standard) units.
6. Push the
Selector Knob
OR press the
Next
button
to save the selection. You will be returned to the
Main Menu
automatically.