Filtration; Vacuum Pump; Checking Operation Of Mechanical Back-Ups; Exhaust Vessel (Emptying) - MIL'S MINIVAC 1 PS Manual De Operación Y Mantenimiento

11.1. Filtration

IMPORTANT:
For this operation, use all necessary protective measures (gloves, mask, overalls etc.) then
destroy contaminated consumables (antibacterial cartridges, condensates etc.) in
according with that country's applicable laws (regulation incinerator).
During and after maintenance, respect basic hygiene rules.
Before ordering tools used for maintenance, clean them with a disinfectant.
Bleed the PYREX vessel
Position the three-way valve to bypass (for simple filtration with by-pass) or close upstream and
downstream valves (for parallel duplex filtration),
Bring to atmospheric pressure by pressing the red button on the filter nose,
Unscrew the vessel, empty it and screw it back into position.
Put the three-way valve back into working position.
Changing the anti-bacteria filter
Systematically replace the anti-bacteria cartridge every 12 MONTHS or more frequently if pressure on the
network drops too low.
Position the three-way valves to bypass,
Bring to atmospheric pressure by pressing the red button on the filter nose,
Unscrew the chamber, remove the filter element.
Fit the new filter element and clean the chamber.
Then, once reassembled, position the three-way valves back to their working positions.
Changing the parallel duplex anti-bacteria filter
Systematically replace the cartridges in the filters every 12 MONTHS or more frequently if pressure on the
network drops too low (∆P 150 mbar).
Isolate the first filter by closing its upstream and downstream valves,
Bring to atmospheric pressure by pressing the red button on the filter nose,
Unscrew the chamber, remove the filter element.
Fit the new filter element and clean the chamber.
Then, once reassembled, position the upstream and downstream valves back to their working positions.
Repeat the above procedure for the second filter.

11.2. Vacuum pump

IMPORTANT:
For this operation, use all necessary protective measures (gloves, mask, overalls etc.) then
destroy contaminated consumables (antibacterial cartridges, condensates etc.) in
according with that country's applicable laws (regulation incinerator).
520713-00
MINIVAC 1/2/3 PS & ARICA

11.3. Checking operation of mechanical back-ups

Check with relevant authority that this test is suitable for the activity and architecture of
the building in which the network is installed. This action will trigger an alarm.
For PROCOM-2 / CYCLIC 2020 / MILLENIUM:
A mechanical back-up vacuum switch is placed in parallel with the control unit.
Set the general switch to "O".
For PROCOM-2 and CYCLIC 2020:
Remove the connector O1 to O8 (PROCOM-2) or 1 to 10 (CYCLIC 2020) in order to withdraw the piloting
part of the pumps by the chart and to keep the posting of the pressure.
For the MILLENIUM:
Remove the protective fuses F1A – F2A.
Turn the general switch back on.
Reduce the vacuum in the receiver, the pumps should start up at around –450 mbar and stop at around –
650 mbar.
Once the check has been completed, set the general switch to "O", put the connector or the fuses back in
place and then reset the general switch to "I".

11.4. Exhaust vessel (emptying)

IMPORTANT:
For this operation, use all necessary protective measures (gloves, mask, overalls etc.) then
destroy contaminated consumables (antibacterial cartridges, condensates etc.) in
according with that country's applicable laws (regulation incinerator).
This operation should, whenever possible, be carried out with the pumps switched off.
Unscrew and empty the vessel.
Note: if there is an abnormally high quantity of oil, check the condition of the vacuum pump exhaust filters.

11.5. Changing the hose with vacuum applied

To change the hose, proceed methodically in order to avoid interrupting vacuum production and always
remember to isolate the unit from the rest of the network. If the hose is located on the suction side of the
pump, the pump must be stopped. The non-return valves are located in such a way that they will
automatically isolate the network when a hose is being changed.
Respect the minimum curve ø20: R = 75 mm - ø30: R = 160 mm - ø35: R = 220 mm – ø45: R = 250 mm. The
hose must never be installed stretched.
Interrupting the Rilsan connection between the network and the electrical cabinet will cause a leak that will
be compensated for by operation of the vacuum pumps during the changeover time (this connection does
not have a check valve or an isolation valve).

11.6. Non-return valve

Loss of tightness of this valve will lead to a leak when breaking a hose connection.
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