Specifications

8
Initial Startup:
When the power switch is turned on the controller will perform a self-test to make sure controller is
operating properly. (If all four 1’s do not light up or fails to go to “8888” contact Thermolyne.)
Adjustment of Parameters: (See Figure 1, page 4)
To illuminate down ▼ button, scroll button, and up ▲ button, touch anywhere on front panel.
Set Point Temperature:
Push up ▲ button or down ▼ button, to modify temperature set point (lower digital display).
NOTE
When performing the following steps remember that if more than eight to ten seconds
elapse before the buttons are used again, the display screen will automatically switch back
to displaying chamber temperature. If this happens, light up the front panel again and step
through each parameter until you reach the point at which the interruption occurred. The
parameter values you checked earlier, however, will not be lost or altered. Holding down
on the scroll button allows longer viewing time.
CAUTION
Do not exceed limitations for continuous or intermittent operating temperature shown in
the General Specifications. Exceeding these limits will result in severely reduced heating
element life.
Temperature Indication:
Push scroll button once, “°C” will appear. This indicates temperature measurement. (Contact
Thermolyne if control needs to be changed to °F.)
Tuning:
This control incorporates a self tuning feature which determines the optimum control parameters for the
best temperature accuracy.
Push scroll button until “tunE” appears. To start tuning function push ▲ button. To stop tuning
function push ▼ button.
When the tuning process is started the lower display will flash “tunE” along with the furnace temperature
set point. During tuning the temperature set point cannot be changed. To change temperature set point
“tunE” must be turned “OFF”.
NOTE
If the power to the furnace is “turned off” or interrupted while in “tuning,” upon return of
power to the furnace, the controller display will indicate “LINE FAIL” because sampled data
could be questionable. To restart tuning, refer to “Tuning” procedure.
If the controller cannot maintain temperature set point “tunE FAIL” will appear on display. First,
correct problem for not maintaining temperature set point, then restart “tuning” procedure.