Thermo Scientific Heratherm OGS 100, Operating Instructions Manual

Page: 31 / 88

Product Description
Data Communications & Alarm Interface
Thermo Scientific Heratherm 4-7
When the user acknowledges the error message, the red alarm icon (D3 in Figure 7-1 on
page 7-1 ) is illuminated and the Temperature Set Value icon (see Table 7-3 on page 7-3 ) is
highlighted by a red border to indicate that thermal protection has kicked in.
Data Communications & Alarm Interface
All signal connections are installed in the electrical interface panel at the rear of the oven.
RS-232 Interface
The RS- 232 interface (left in Figure 4-6 below) may be used to connect ovens to the serial
interface port of a computer to allow for the computer-aided acquisition and documentation
of major operating parameters (temperature, error codes, etc.).
Figure 4-6 Signal Interfaces and Power Socket
AC Power Socket
The oven is connected to the AC supply mains via the socket at right in Figure 4-6 above,
which accepts a power cord with an IEC standard plug [9].
Fuses
Two 16 A slow-blow fuses mounted on the oven’s main electronic circuit board protect
internal circuitry from the impact of excessive power consumption.
Fuse replacement
The device fuses are not user-serviceable. When the oven exhibits the
typical signs of a blown fuse (no response to pressing the On/Off button,
control panel remains extinguished, no heating operation), call
Customer Service to have the fuses replaced.