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Serinus 44 User manual 1.0
6.4.6 Advanced leak check
If a leak is suspected a more intensive leak check can be performed.
1.
Continue from the setup in the quick leak check.
2.
Connect a pump to the exhaust port with a shut off valve (pump side)
and a vacuum gauge (exhaust port side) between the two
3.
Ensure that the shut off valve is open then turn on the pump (1-2
minutes) and create a vacuum.
4.
Close the shut off valve and measure the vacuum. If the vacuum slowly
drops (pressure rises) then a leak is present
5.
Open each valve individually, leaving the other two closed, and using the
pneumatic diagram determine the location of the leak
6.
When the location of the leak has been determined check all tubing and
fittings to make sure that they are attached appropriately and have no
splits or cracks
6.4.7 Replace PMT desiccant packs
Because the PMT is extremely sensitive to light, it is
essential that before opening the PMT assembly to
make sure that the analyzer is switched off.
In addition, even when the analyzer is switched off is
very important to cover the PMT at all times so that
no direct light reaches its window.
1.
Turn the analyzer off and disconnect power.
2.
Using a Phillips head screwdriver, remove the desiccant pack access cap
from the PMT housing. Refer to 1 in Figure 27
Figure 27 Opening the Reaction cell or PMT access cap
Caution
Service
59
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