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OPERATION
PROGRAM AND OPERATE - FOUR STAGE PROGRAM (Figure 1)
1. Follow Three Stage Program, Steps 1 - 4.
2. Press ENTER/REVIEW. STAGE 3 light turns off, STAGE 4 and HEAT RATE lights turn on. Main
Display shows four heat rate choices. Choose one:
A. Select heat rate between 1°F - 30°F/min (1°C - 17°C/min) using .
B. Select “FULL” to program maximum heat rate.
C. Select “COOL” to program the furnace to cool to a selected temperature.
D. Select “NO” to turn off Stage 4. This will result in a Three Stage Program.
NOTE: The HEAT RATE cannot be programmed to “COOL” in STAGE 1 - only in STAGE 2,
3 or 4.
3. Press ENTER/REVIEW. HEAT RATE light turns off and TEMP light turns on. Enter for the temperature
required : heating temperature up to a maximum of 2012°F (1100°C) or cooling temperature down
to a minimum of 100°F (38°C).
4. Press ENTER/REVIEW. TEMP light turns off and HOLD TIME light turns on. Enter to program the
time needed to hold at the above temperature (0 - 4 hrs.).
5. All necessary information for this program is now entered.
6. To run the program immediately, press START/STOP.
7. To delay the start of the program to be ready to cast at the pre-set time (see One Stage Program,
Step 3 ), press NIGHT TIME (DELAY START).
NOTE: If NIGHT TIME (DELAY START) is pressed while a program is running, the time
remaining for completion of the program will appear on the Main Display for 5
seconds.
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