13 Barnstead|Thermolyne • 800-553-0039
When the tuning process is started, the lower display will flash 'tunE" along with the furnace temperature
setpoint. During tuning, the temperature setpoint cannot be changed. To change temperature setpoint
'tunE" must be turned "OFF." (To stop the tuning function, push the "DOWN" button.)
NOTE
If the power to furnace is "turned off" or interrupted while in "tuning,"upon returning power to
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 setpoint, "tunE FAIL" will appear on display.
First, correct problem responsible for not maintaining the temperature setpoint, then restart
the "tuning" procedure.
Changing Temperature Indication:
Push "SCROLL" button once, "°C" will appear. This indicates temperature measurement. (Contact
Thermolyne if control needs to be changed to °F.)
Setting the High Alarm Temperature (Over Temperature Protection OTP):
Push "SCROLL" button until "AL.SP" (Alarm Setpoint) appears. The lower display should indicate
1100°C.
NOTE
HIAL- HIGH ALARM. (over-temperature protection, OTP)
The controller is fitted with a mechanical relay which is de-energized in the alarm mode. This
relay, when de-energized, removes power from the heating elements. If the primary control
circuit fails, the OTP will control the furnace temperature at the preset value you have
entered. It
does not shut off the furnace. but will maintain the chamber temperature at that
value.
Depress either the "UP" or "DOWN" button to select the OTP value you desire. Thermolyne recommends
that you set the value either at the maximum operating temperature of the furnace or a value of 20
degrees above your working temperature if you desire to provide protection for your workload.
To Next Page
Loading...