MMM CO2 Series - Construction; Doors; Control System; Co 2 Sensor

Instructions for use
4 CO
2
CELL Comfort 190_np_en 1301_mmm_V1.02
2.1 CONSTRUCTION
The inner chamber is made from 316 grade stainless steel.
It is deep drawn from one piece with no welds and is
electro-polished, meaning that the inner surfaces are
smooth and easily cleaned.
The removable shelves, racking and water tray are also
made from stainless steel.
The outer housing is made from stainless steel and powder
coated with anti-bacterial biocide paint.
2.2 DOORS
The outer door has a heater on its inner face. This door is
an integral part of the temperature control system and must
be closed for the incubator to function normally.
The door is hinged on the right hand side. Left hand opening
is only available as an option at the point of ordering, retro-
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When this door is open, the CO
2
valve is closed and
heater power is reduced to prevent over shoot of operating
conditions. The door is linked to the controller alarm system.
DSection 6.3
On the Comfort 190S incubator, 2 magnetic solenoid
locks prevent the outer door from being opened while the
incubator is in a high temperature sterilise cycle.
An inner glass door seals against a thermoplastic elastomer
gasket. This allows viewing of the samples within the
chamber without disturbing the temperature or atmosphere
of the chamber.
The incubator can be optionally equipped with a multi-door.
These multi-doors improve temperature and CO
2
recovery
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DSection 10.
2.3 CONTROL SYSTEM
The colour LCD touch screen display allows the user to
easily see operating conditions and to alter settings through
icon based menus.
Software controlled PID loops constantly monitor
temperature and CO
2
values, making automatic adjustments
to keep the chamber atmosphere within limits.
The controller is equipped with a built in feature that logs
incubator data directly to a removable SD card. This
data is in Excel format, making it easy to view with a PC.
DSection 7.
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to connect the incubator to a PC so that you can remotely
access the SD card data. PC software is required to do this.
Contact your dealer or MMM directly for advice.
Other optional communication options are Ethernet PC
interface and 4-20 mA retransmit. DSection 10.
2.4 CO
2
SENSOR
CO
2
is measured and controlled using a highly accurate
infra-red sensor. This sensor remains practically drift free
between calibration periods.
The sensor is not mounted within the chamber; instead a
small pump passes the chamber atmosphere through the
sensor.
The sensor does not have to be removed during high
temperature sterilisation.
2.5 DIAGRAMS
2.5.1 OUTER VIEW
2.5.2 INNER VIEW
2.5.3 REAR CONNECTIONS