Specifications

19 Barnstead |Thermolyne • 800-553-0039
8 Ramp & 8 Dwell Multi-Programmable Models
(Models F30430CM, F30438CM, F30430CM-60,
F30438CM-60)
Controls and Displays
Digital Readout:
The digital readout continuously displays chamber (upper display) and setpoint (lower display)
temperatures unless the scroll button is depressed.
If the scroll button is depressed and released, the lower display will indicate output power (OP) or setpoint
(SP). This is referred to as the "short scroll." Continued single step action of scroll button will cause lower
display to alternate between setpoint (SP) and output power (OP).
To enter the main scroll list (list of all controller parameters that are accessed through front keyboard), the
scroll button should be held depressed. PR1 (program ramp rate 1) will appear. To progress through the
parameter list, the scroll button must first be released; subsequent single step depression will advance
you through the list. Rapid progression through the parameter list is achieved by holding the scroll button
depressed.
See Parameters for a list of the controller parameters in order.
NOTE
When performing operations with the controller, if you depress and release either the "scroll,"
"up," or "down" push buttons and more than 8 seconds elapse before the buttons are used
again, the display screen will automatically switch back to displaying setpoint temperature. If
this happens, you will have to step through each parameter until you reach the point at which
the interruption occurred. The parameter values you adjusted earlier, however, will not be lost
or altered.
NOTE
To change from °C indication to °F indication, contact Barnstead/Thermolyne.
Power Switch: Turn power switch to the "ON" position.
CAUTION
Remember that whenever the power switch is turned "ON," the furnace will begin to heat
at the setpoint temperature that was previously set in. This value will remain unchanged
for up to a year without power being applied to the control.
Cycle Indicator:
The amber cycle light will illuminate whenever the door is closed and the actual chamber temperature is
less than the setpoint temperature. This light will go out when the door is open, when the chamber
temperature has reached the setpoint temperature or when there is an over-temperature condition.
Door Safety Switch:
The door safety switch removes power from the heating elements when the door is opened. Open and
close the door a few times, note that the amber cycle light will go out while the door is open. If the cycle
light does not go out while the door is open, consult the Problem Solving section before proceeding.