Adixen ASM 142, User Manual

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Starting of the molecular and
turbomolecular pumps
Restarting after stop
Please wait 5 s between stop and restart, in order to be sure that the
synchronism information is given to the leak detector and the display
does not lock at 99 %.
(It only concerns the detectors equipped with the P0326 converter board)
If you have this problem, stop the leak detector and wait 5 s before
starting again (concern only leak detectors equipped with the P0326
convertor board).
Starting in the
cold state
First start up
after delivery
There is a risk that the turbomolecular pump does not start if the ball
bearings temperature is below 5 °C. In order to be at the ambient
temperature, 6 hours are necessary to the ball bearings.
That’s why, if you start a leak detector which was outside during a
cold period (in a car or in its delivery package by example), it is
possible there is starting problem during 2 or 3 hours. Don’t be
worried ! You must just waiting that the leak detector would be at
ambient temperature.
We have just seen previously that the temperature has an effect on
the starting of turbo pumps. The first start after delivery is even more
critical as the grease stay a few days in the same position, and even
is going between the balls of the bearing on the roller way in bigger
quantity that expected because of the transport’s vibration.
That explain some non start up of the turbomolecular pump at the first
start up. In this case it is not abnormal to have to power on the leak
detector several times (10 max) with 15 s between a power off and a
power on, to start up the turbomolecular pump.
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