Fisher Bioblock Scientific 101041, Руководство по эксплуатации

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Operating Manual Freeze Dryer ALPHA 1-4 LD-2 / 2-4 LD-2 , Version 0203, Page 43
When using drying chambers with 8 connections for rubber valves the valves should
be taken off and the connections should be sealed with rubber stoppers. To check the
valves they are connected one after the other and tested under vacuum.
Check the vacuum measuring sensor for pollution such as water residue.
The vacuum measuring sensor has a limited life time due to its design principle.
Vacuum sensors are available as a spare part (order no. 125479).
Check the vacuum display with a suitable testing unit (if available).
In order to locate a possible leak we recommend that the vacuum measuring sensor is
directly connected to the vacuum flange of the vacuum pump. If the warm vacuum
pump reaches a final pressure of at least 0.011 mbar, the vacuum pump and the
measuring system can be presumed to be in working order. There is probably a leak in
the unit if insufficient vacuum is not caused by an insufficient ice condenser
temperature.
The vacuum pump does not switch on:
The vacuum pump is equipped with a protective switch for the drive motor.
(Please refer to separate operating manual.)
General information:
The vacuum checks should be carried out when the ice condenser is at a low
temperature.
7.3 Unit does not function
If the refrigerator does not work and the temperature or the vacuum is not displayed
after operating the mains switch, the following must be checked:
−
Is the mains switch plugged in?
−
Check the fuses F1 and F2 (draw in the power supply plug on the back of the unit).