Disconnection procedure
1. Stop the pump by sending a
'Stop'
order.
2. Switch off the pump by setting the power supply main switch to
O
.
3. Switch off the network circuit breaker of the customer's installation.
4. Disconnect the mains plug.
5. Disconnect all the connectors on the control interface.
6. Disconnect the nitrogen supply.
7. Disconnect the
WATER IN
connector followed by the
WATER OUT
connector.
8. Disconnect the pump from the high vacuum flange and blank off the inlet port with the airtight con-
nection accessories.
9. Disconnect the pump from the exhaust and blank off the exhaust port with the airtight connection
accessories.
10. Install the handling devices (see chapter "Handling the pump").
11. Disconnect the pump from the installation.
9.4.2 Draining the water circuit
Any water that has accumulated must be drained to prevent the pipework from freezing during trans-
port. To do this, users will need to provide flexible tubes and connections as well as a compressed air
circuit (pressure 2 to 5 ·10
3
hPa).
AIR PRESSURE
1
2
3
1 Pipe for compressed air supply
3
Container (capacity > 1 liter)
2 Water drain pipe
Water circuit draining procedure
1. Place a container below the pump water connectors.
2. Disconnect the water circuit from the
WATER IN
and
WATER OUT
connections.
3. Connect the drain pipe to a pump water connector.
4. Connect the other connector to a compressed air circuit.
5. Inject compressed air into the pump until the water has been completely evacuated.
9.4.3 Preparing the pump for shipping
Pumps due to be shipped must first be roughly decontaminated then pressurized with nitrogen.
To decontaminate and pressurize the pump, you must have a nitrogen supply with the required charac-
teristics (see chapter “Nitrogen characteristics”). Similarly, you should have connection accessories so
that the pump can be tightly sealed (see accessories).
Maintenance
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