Thermo Scientific 3881, Руководство по эксплуатации и техническому обслуживанию

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The temperature probes are located on the left
inside wall of the cabinet. Refer to Figure 2-9.
The probe bottles are secured in the brackets.
The top bracket location is for the upper
chamber and the recorder probes. The lower
bottle location is used for the lower chamber
probe.
The temperature probe connectors on the circuit
board are identified in the area marked “A” in
Figure 2-4.
For liquid temperature measurements, the bottles are filled with propanol,
or a 250-ml solution of 10 parts water and 1 part glycerol. The probes
must extend at least two inches into the solution and the bottle cap must
fit tightly to minimize evaporation.
The seven-day circular chart recorder is located on the top front of the
refrigerator cabinet and is protected by a glass door.
To prepare the recorder for operation, open the glass door and snap the
connector onto the 9-volt battery as shown in Figure 2-10. If the
refrigerator is operating, the green LED will show a steady light. If the
refrigerator is not turned on, the LED will flash.
Note If the battery is weak or not connected, the green LED will flash. If
power is lost to the cabinet, the LED will also flash as the refrigerator goes
into the alarm state.
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7033881 Blood Bank 2-7
Thermo Scientific
Section 2
Installation and Start-Up
Installing the
Temperature Probes
Figure 2-9. Temperature
Probe Location
Liquid temperature
measurement
Preparing the CoBex
Chart Recorder
Installing the chart
recorder battery
Figure 2-10. Chart Recorder