Miller ProHeat 35 OM-222 166F, Owner'S Manual

Page: 32 / 72

OM-222 166 Page 26
All parameters in System Setup are considered global, and any changes to the
system set-up parameters will apply to all programs.
NOTE
To reset the system back to factory default settings, turn off the power source, and wait until the display goes blank.
Turn on the power source. When the display lights, press and hold the Increase and Decrease
buttons. A message will display Press Program to reset factory defaults. Release the Increase and De-
crease buttons, and press the Program button.
6-4. Programming
Programming allows the operator to setup a program for a particular heating process. The selections available are
either Temperature control or Manual control.
6-4-1. Temperature-Based Control
Temperature-based control operates the system and controls the heating process based on temperature feedback
from thermocouple inputs. Thermocouples must be used for this mode of operation or the system will not operate.
Within the temperature-based mode there are four different processes available as follows: Preheat, Bakeout,
PWHT (Post-Weld Heat Treat), and Custom Program.
Press the Program button to access the programming mode. Use the cursor button to move the cursor to the desired
temperature-based process, then press the Program button again to select the process.
6-4-1-1. Preheat
The preheat process is a simple method of heating material to a desired temperature and holding that temperature
for a specific period of time. When this process is selected, the following screen will appear on the LCD display:
Mode.......: Preheat
Control TC.: 1
Temperature: 400
Soak Time..: 01:00:00
Preheat Screen
The default position of the cursor is next to Control TC. Press the Increase or Decrease button to
select the number of control thermocouples to be used for the program. Selections are as follows: 1, 1,2, 1,2,3, or
1,2,3,4. TC1 MUST always be a control thermocouple. TC2 thru TC4 can be used for controlling or monitoring.
When a thermocouple is selected as control, the LED adjacent to the seven-segment display illuminates.
Use the Cursor button to move the cursor to the desired selection (Temperature or Soak Time), and press
the Increase or Decrease button to change the value to the desired setting.