Eppendorf Innova 43R Incubator Shakers - Manual (Page 20)

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Innova 43 & 43R Incubator Shakers  M1320-0050 Operating manual
5.8 Software Interfaces
The RS-232 port is next to the Power Switch on the right side of the control panel (see
Figure 3). It can be used to interface a computer to the shaker for control of operating
conditions or data logging applications (see Section 12).
The customer is responsible for securing the proper driver to interface with the RS-232.
5.9 Interior Light(s)
When the
LAMP screen is in its default AUTO mode, the interior (“chamber”) light is
activated for 15 seconds whenever you turn the Control Knob. It will automatically shut
off after 15 seconds of Control Knob inactivity.
The chamber light will also go on when the lid is open.
In addition, you can set the chamber light to be continuously
ON or OFF by selecting
either mode in the LAMP screen.
There are two additional light options for refrigerated shakers only: interior
photosynthetic growth lamps (see Section 6.7) and a germicidal UV lamp located outside
the chamber but in the airflow path (see Section 6.6).
5.10 Heater
The chamber temperature is sensed by a 1000 ohm platinum RTD. A 650W heater is
controlled using pulse width modulation on a 2.5-second duty cycle. This cycle time is
fast enough to prevent noticeable changes in air temperature due to the cycling.
Whenever the heater is on, the Heater On icon will appear in the display. The
heater automatically stops running when the lid is opened.
NOTE:
Operating the shaker for sustained periods at temperatures above 60°C may
result in a shorter fan lifespan.
5.11 Refrigeration (43R Only)
The refrigeration system in the Innova 43R is a variable-capacity system carefully
designed with self-checks to maintain the setpoint, to balance pressure within the system,
and to prevent freezing on the evaporator surface.