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P a g e
CONTROL PANEL OVERVIEW
Figure 1: Control Panel SMO14-2 and SMO28-2
Power Switch
The main power switch on the control panel (green lighted I/O) controls all power to the unit and
must be in the I (ON) position before any systems are operational. The switch will be lighted when
in the I (ON) position.
Timer Switch
The black I/O switch marked TIMER is located to the right of the power switch. It controls the power
to the timer circuit. In the OFF position oven heating has no timed duration. In the ON position
heating runs for a user-programed timed interval and then shuts off.
Over Temperature Limit Thermostat (OTL)
This control is marked SET OVER TEMPERATURE and is equipped with a graduated dial. It is
independent of the Main Controller and guards against any equipment failure which would allow the
temperature to rise past t
he Main Controller’s set point. This allows continued operation of the oven
in the event of a Main Controller failure, until the problem can be corrected or service can be
arranged. Operating the incubator for extended periods of time using only the Over Temperature
Limit feature is not recommended, as the
chamber’s temperature stability and uniformity will suffer.
OTL Light
The red pilot light marked OVER TEMPERATURE ACTIVATED will illuminate when the Over
Temperature Limit Thermostat has taken control of the oven. Under normal operating conditions
this pilot lamp should never turn on.
Timer Control Pad
Marked SET TIMER, this control and display consist of the RESET button, UP / DOWN arrow
buttons, a START/STOP button, a green digital display, and a TIMER ACTIVATED indicator LED.
These controls and display are used to set up a timed heating cycle, activate the start of a timed
heating cycle, and to end an active timed heating cycle.
Summary of Contents for FX14-2
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