17
Table 3-2. Control Functions.
Function #
Function Name
Description
1
RAMP TEST
Run the Ramp Test
2
CHANGE AIR PRESSURE
Set the air pressure for a program
3
AIR MODE
Select active cooling mode (Time or Delay)
4
AIR TIME AT START OF PULL
Dehumidify the heating chamber prior to
pulling.
5
AIR TIME AT END OF PULL
Purge chamber at end of pull
6
RESET TIME AND DATE
Set the clock
7
WRITE-PROTECT THE PROGRAM Lock or unlock the write protection
8
MEMORY TEST
Test the integrity of the RAM
The eight control functions will scroll along the bottom line of the display. Select the desired
control function by pressing the corresponding numeric key. Each control function is
described in more detail below.
3.3.1
RAMP TEST < 1 >
The HEAT value required to melt your glass is based on the characteristics of the heating
filament that is installed and the glass you are using. The RAMP TEST allows you to
systematically establish or adjust program HEAT values as a function of the filament/glass
combination. This test should be run when using the puller for the first time, before writing
or editing a program, whenever you change glass or whenever you change the heating
filament.
To run a RAMP TEST:
1.
Go into any program. For example, Press <1> and then <ENTR> to select Program 1
2.
Press <CLR>
3.
Press <0> to not clear parameters
4.
Select <1> for RAMP TEST
5.
Install glass and press <PULL>
When executed, events in the RAMP TEST take place as follows:
1.
The puller increments the HEAT at the rate of 650 milliamps per second, and the
filament, after 1-2 minutes, begins to get hot and glows orange in color.
2.
The puller bars begin to move apart as the HEAT output begins to soften the glass.
3.
The HEAT is turned off when a certain velocity (the value of which is stored in ROM) is
achieved.
4.
The RAMP TEST value shown on the display is the HEAT value that was required to
reach the factory-set RAMP TEST velocity.
To interrupt the RAMP TEST or reset the display press RESET.
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