Shel lab 5215 Installation And Operation Manual page 8

CONTROL PANEL OVERVIEW
All controls are located on the front panel. Units with a detachable cord have a fused inlet located
at the top rear of the incubator. This inlet has a recessed male plug, fuse and an EMI filtering
system designed to filter out electrical interference.
generated interference from feeding out to the power grid.
4.1 Power Switch: The I/O (ON/OFF) switch controls all of the power for the incubator and must be in
the I/ON position before any systems are operational. Both temperature and CO
illuminate when the power switch is in the ON position.
4.2 Safety Activated Light: This pilot lamp is on whenever the Over Temperature Safety thermostat
has been activated and taken control of the heating element. During normal operating conditions this
indicator should never be on.
4.3 Temperature Control: This controller is marked C and indicates the actual temperature within the
chamber to .1C. The UP/DOWN buttons are used for imputing the set point, calibrating the display,
and muting or unmuting the audible alarm. The HIGH and LOW alarm indicators will light whenever
there is an alarm condition associated with the temperature within the chamber. The MUTE indicator
will light whenever the audible alarm has been deactivated.
4.4 CO Control: This controller is marked %CO
2
to .1%. The UP/DOWN buttons are used for to input the set point, calibrating the display, and muting
or unmuting the audible alarm. The HIGH and LOW alarm indicators will light whenever there is an
alarm condition associated with the CO
whenever the audible alarm has been deactivated. The CO
the controller is injecting CO
4.5 Over Temperature Safety Control (OTP): This is a hydraulic thermostat that is wired between the
Main Temperature Controller and the heating element and functions as an override control. If at any
time the Temperature Control fails in the ON position, and the temperature in the incubator rises
above its set point, the OTP is activated and maintains temperature at its own set point. Note that
the HEATING indicator will continue to function under the control of the Over Temperature Safety.
4.6 CO Sample Chamber: This is located in the upper front corner of the right side of the incubator.
2
A sample can be drawn to measure the CO
Muting Audible Alarms: The audible alarms can be muted for a single alarm occurrence by pressing
and holding down EITHER the UP or DOWN button for several seconds until the alarm mutes. There is a
built in delay of approximately 15 minutes on the occurrence of a LOW alarm. This time delay prevents
the audible alarm from activating when not needed.
Figure 1
and indicates the %CO
2
% within the chamber. The MUTE indicator will light
2
into the chamber.
2
content in the chamber at this port.
2
(See Figure 1)
This inlet also prevents any internally
content within the chamber
2
injecting light will illuminate whenever
2
Section
4
displays will
2
8