Ulvac VPC-1100, Руководство пользователя

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6. Handling the oil-sealed rotary vacuum pump during repairs
(when only 1 is in use)
Two oil-sealed rotary vacuum pumps are normally run simultaneously. However, if
two cannot be run together, due to a malfunction or for other reasons, then it is
possible to run the device with only one pump while the other is being repaired, if
the following procedures are followed. (We cannot guarantee the performance of
the device under such circumstances.)
Once repairs are completed, please run the two pumps simultaneously.
Using one pump
1) Check that the device has stopped.
2) Remove the vacuum hose of the malfunctioning oil-sealed rotary vacuum pump
and fit the cap to the exhaust port of the rough pipe.
3) Disconnect the motor wiring connectors of the malfunctioning oil-sealed rotary
vacuum pump to prevent it from being used accidentally.
Precautions when using only one pump
1) Do not operate the device while the vacuum hose of the malfunctioning oil-sealed
rotary vacuum pump is connected.
Oil or air may back up and affect the pressure inside the rough evacuation pipe.
2) Rough evacuation will take longer. Use the Pirani vacuum gauge to check the
rough pressure, and then use the three-way valve.
The main valve will open more slowly than it would if there were two pumps.
There is no change when the valve is closing.
7. Storing the device
Please take the following steps when storing the device for a prolonged period.
1) Storage location
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Sturdy flooring
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Well-ventilated location
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No direct sunlight
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No chemicals or gases which may corrode or otherwise affect
the device
2) Preparation before and during storage
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Evacuate the interior of the bell jar.
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Remove the ring catch from the bell jar cover and lower the hoist weight until it
touches the base.
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Use the level adjuster attached to the caster to fix the device in place.