7-2
3177885 Thelco Oven
Thermo Electron Corporation
Section 7
Operation
Models 6545/6546, 6555/6556, 6547/6548,
6557/6558, 6549, and 6559
1. Press the ON/OFF switch for power to the ON position.
2. Set desired temperature by depressing TEMP button once and use
arrow keys to raise or lower to desired value. When desired value is
displayed in the SET POINT window press the SET button.
3. Set desired high limit value by depressing HIGH LIMIT button and
use arrow keys to raise or lower desired values. This value
MUST BE
at least 5° higher than the TEMP set point value previously set. If not,
the display will blink "Hi" until an appropriate value is selected. When
desired high temp limit value is shown in the SET POINT window,
press the SET button.
4. If you wish to run the oven continuously, the Continuous lamp should
be on. If it is not, depress the Timer button to light the Continuous
lamp. If you wish to run the oven for a set number of hours, depress
the Timer button again; a "0" will be displayed. Use the arrow buttons
to enter the desired number of running hours in one hour increments.
Press the Start/Stop button once to start timed operation.
5. If the actual temperature exceeds the entered high limit value, the
HIGH LIMIT thermostat circuit will take over and the alarm will
sound. Depress the MUTE button to silence the alarm and check
Maintenance and Servicing.
6. If the set point of the oven is lowered while the oven is still hot, and the
new HIGH LIMIT value selected is less than the previous SET
POINT, the high limit alarm will sound until the oven cools to below
the new HIGH LIMIT value. This is normal; press MUTE to silence
the alarm.
