Thermo Scientific 7400 Series, Operating And Maintenance Manual

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7007400 Cryoplus 1-7 Thermo Scientific
Section 1
Quick Start-Up
Installation
Verification
Tank Switcher Plug-in
The CryoPlus storage system is equipped with an RS-232 Serial
Communication Interface for the remote transmission of data. An RJ-11
telephone style connector is located on the rear of the cabinet. A cable
with RJ-11 plugs and an RJ-11 to DB-25 adapter are required. Figure 1-4
identifies the pin connections.
The RS-232 provides information to a serial printer or terminal via the
following protocol:
9600 Baud
1 Stop Bit
No Parity
8 Data Bits
The power outlet on the back of the cabinet provides line voltage to a tank
switcher, if such equipment is used.
The following procedures test key elements of the CryoPlus Freezer system
and verify the unit's installation. These tests can be performed at the
operator's discretion. If any of these tests fail, contact the Technical Service
Department or your local Thermo sales representative.
LN
2
Supply
The source tank should indicate that it is full and the pressure to the
Cryo unit regulated at 22 PSIG. Check all connections.
Temperature Sleeve
When installed, the ends of the sleeve must align with the temperature
probe at the back of the tank and the pressure and fill ports are visible
through the square holes at the bottom of the sleeve.
Power Switch
Turn the unit on with the power switch located on the back of the unit.
Under normal conditions, all LEDs on the control panel and bar graph,
with the exception of the alarm LEDs illuminates for approximately 2-3
seconds. The power switch is the main disconnect for the system.
Keypad
Press each button on the control panel, listening for a "beep" response.
Control Panel Key Switch
Turn the key switch to the Programming Access position (.). Control
panel temperature display indicates alarm setpoint temperature. Turn the
key to Lock position and the display shows actual chamber temperature.
RS-232 Interface
Connector