Operator`s manual

5
OPERATIONS
RUNNING A PROGRAM:
The furnace has 9 three stage programs and one single temperature hold program. The furnace is sold with
the program parameters set to the factory defaults which can be used for testing. First time operation will
require the user to enter their desired parameters into one of these programs.
1. Turn on green power switch (right-hand side of control panel)
After a short delay for internal testing, the furnace will display approximate room temperature, program
time (hours:minutes), and program number. All red LEDs are off. (If any of the LEDs are on, the furnace
was already running a program when it was last turned off.)
2. Select or change the program to the desired number by pressing the digit key (1-9) for the desired program
followed by the ENTER key. The display will be updated to show the new program number and its
approximate run time.
3. Pressing the green Start
S
key will start this program. The red LEDs will come on and the time will start
to count down. The green power switch will light when the door is closed. The LEDs will turn off as each
segment of each stage of the program is completed.
• During program operation, the total program cycle time is counting down as indicated by the flashing
colon.
• If a program is started when the muffle is already heated, the furnace will heat or cool at the first ramp
rate to reach the first temperature segment. The total cycle time will be updated once the start key has
been pressed.
• The program will end by maintaining the last muffle temperature, displaying "Hold", beeping every 3
seconds and flashing the last Temp LED. See information on End Of Program options (point 1) in the
"Setup & Maintenance" section if other end of cycle operations are preferred.
4. Pressing the
°C / °F
key will change the temperature display from °C to °F and back. This key is not active
during parameter programming.
5. A short power outage during the operation of a program will not terminate or abort the program unless the
muffle temperature drops more than 32°C (58°F). If the power outage occurs when the muffle temperature
is close to, or at room temperature (e.g. during Delay Start operation) the furnace will continue the program
when power is restored regardless of the temperature drop or the amount of time that has expired.
6. Pressing the Escape
ESC
key cancels beeping at the end of a program. It also will return the furnace to a
display of the current conditions during programming operations.
7. Opening the door during a cycle interrupts power to the heating elements.
STOPPING A PROGRAM:
1. Pressing the red Stop
S
key will stop the program that is currently running. The red LEDs will go out
and the display will show the current program number, approximate cycle time, and the current muffle
temperature.
PROGRAMMING:
The furnace increases productivity and reliability for the operator because cycles or programs can be
preprogrammed and operated automatically. Once programmed, the parameters are retained in memory even
with the loss of power. Parameters are not retained in memory if entered during the operation of a program
(experimental operation).
Each program is made up of 3 stages which contain 3 parameters each. The parameters are grouped into
ramp rates (R1, R2, R3), temperatures (T1, T2, T3), and dwell or hold times (H1, H2, H3). The 1,2,3 indicates
the stage number or sequence. The temperatures can be programmed in either °C or °F; the ramp rates in °C
per minute or °F per minute; and the hold times in hours and minutes (hh:mm).