G 04128 - Edition 02 - July 12
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C 00
Safety recommendations
for harsh processes
All process pumps are designed for continuous operation in pumping process
gas adn should not be stopped.
adixen Vacuum Products will be released from any warranty and liability claims
if a process pump is stopped for a prolonged time leading to condensation of
by-products, powder build-up or corrosion inside the pump.
The only guaranteed solution by adixen Vacuum Products to restart a process
pump after a prolonged stop is to perform a complete overhaul of the pump.
Despite this recommendation, if the pump is shutdown for a prolonged time, it
is advisable to follow the precautions below-mentioned in order to reduce the
risks of condensation, powder build-up and corrosion inside the pump.
- From the process chamber, flush the pump using a dry inert gas, such as
Nitrogen, through the inlet port during 30 minutes.
- Stop inert gas supply and let the pump running at ultimate pressure for
5 minutes.
- Stop the pump and close inlet port with the appropriate blank-off flange.
- If the pump is equipped with a monitoring system, configure N2 prolonged
option in the menu and set it on 30 minutes, then perform a cycle start/stop of
the pump. Wait till end of purge prolonged cycle (30 minutes).
- Put appropriate blanck-off flange at exhaust of the pump.
- Turn off the cooling water supply.
When the pump will need to be back in operation, the following points need to
be observed :
- Remove the exhaust and inlet blank-off flanges and connect the pump to the
equipment.
- Turn on the cooling water.
- Power on the pump and press start button.
In case of trouble to restart the pump, contact adixen Customer Service.
Shutdown procedure for discontinuous operation.
adixen Vacuum Products - Operating instructions - ADP/ADS Series Two
