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Safety Devices
The incubators are equipped with the following safety features:
• a sample protection feature that safeguards the samples against destruction through
overheating in case of contoller failure;
• an overheat protection cut-out feature that shuts down the incubators IMH-S completely
when excessive temperatures occur in the workspace;
• an alarm relay that is energized, along with audible and visual alarms, to indicate errors
encountered during operation;
• dual fuses rated at 16 amperes.
Work Space Atmosphere
To ensure undisturbed operation, the ambient temperature in the operating room must be at
least 18 °C (64.4 °F).
The heating system uses this temperature threshold to control the ambient temperature plus
5 °C (41 °F) up to the maximum of 105 °C (221 °F).
Door Switch
Heratherm IMH 60/100/180/400/750 S incubators come with a door switch [1] integrated
into the latch mechanism. If the door switch is activated by opening the door, heating
operations in the work space are suspended and an icon is illuminated in the display window
(see D4 in
If the door remains open for more than 30 seconds, a short audible alarm is sounded in
addition to the icon in the display window. If the door is left open for more than 10 minutes,
an audible alarm is sounded, a "door open" (E001) alarm message appears in the display and is
issued through the RS-232 interface, and the alarm relay is energized.
Thermo Scientific
figure 7-1
on
page
7-1).
Product Description
Safety Devices
Heratherm
4-11
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