▪ Maintain system seals on a regular basis. Damaged O-rings and gaskets must
be replaced immediately. All flange faces must be free of dirt, lubricant and
scratches.
▪ Do not use collapsible tubing to plumb the vacuum system. Any restrictions in
line diameter caused by tube collapse will reduce available pumping capacity.
▪ In multiple pump installations, check valves should be installed in the inlet
piping. This will prevent fluid from being drawn from an 'off' unit into an
operating unit. Check valves should be properly sized so as not to "chatter"
during operation. Spring loaded, elastomer seated check valves are
recommended. These should be mounted in a horizontal flow orientation.
Using properly sized actuated valves is even a better solution. This generally
results in a lower pressure drop when open and in a better sealing when
closed.
▪ Vacuum gauge ports and gauges should be installed in each leg of central
vacuum piping. This provides a diagnostic tool for troubleshooting both the
application and any pump related problems.
▪ Make sure that no temperature sensitive parts (plastic, wood, cardboard,
paper, electronics) will touch the surface of the vacuum pumps.
▪ Ambient and inlet temperature may never exceed the limits of the pump's
working range. Make sure the installation location is vented such that a
sufficient cooling of the vacuum pump(s) is available.
Special recommendations for using oxygen prepared pumps, filled with
PFPE fluid
At the customer’s site, it must be taken care of the following points:
▪ Pump exhaust must be collected and gases handled according applicable
regulations.
▪ Use of only genuine spares and consumables. Use only dedicated PFPE
Service kits for oxygen pumps.
▪ Accessories retrofitted on oxygen pumps must be hydrocarbon degreased
using an adapted solvent. T
ake all required precautions.
▪ Use of PFPE fluid provided by us only.
▪ Making sure that PFPE fluid level in the pump is correct before switching on.
▪ When changing the exhaust filters, the pump must be operated for half an
hour with closed intake but open GB sucking ambient air or inert gas for
wetting the exhaust filters with PFPE. In case no gas ballast is provided, let
the pump run for 5 minutes at atmospheric pressure on ambient air or inert
gas.
For the pumps using perfluoropolyether (PFPE) as lubricant and when
handling PFPE observe the following:
▪ During thermal decomposition (at temperatures over 290 °C) toxic and
corrosive gases are released. This is not likely to happen in a GVS pump.
When handling PFPE keep it way from open fires. Do not smoke with PFPE
on your fingers.
▪ Touch the inner sections of the pumps only while wearing clean gloves, and
use clean tools; do the necessary work in clean and dry rooms.
12/2021 - ©Atlas CopcoPage 576996022430_C
Installation
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