Pfeiffer Vacuum A 1204H, Operating Instructions Manual

Page: 63 / 92

Maintenance
63
9.5.2 Draining the water circuit
Water must be drained to prevent hoses freezing during shipment.
Prepare a flexible pipe ( A ) with a female connection and another flexible pipe ( B ) with
a male connection (supplied by the customer).
Connect one end of pipe ( B ) on WATER OUT connection and place the other end in
a vessel (total water volume will be greater than 1 liter).
Connect one end of pipe ( A ) on WATER IN connection and connect the other end to
a compressed air circuit (2 to 5 · 10
3
hPa).
Switch on the pump (see 6.2.1) .
Set the menu
[MAINTENANCE] [WATER DRAIN]
on
[ENABLED]
: water valves
open.
Inject compressed air into the pump until the water has been completely evacuated
from the circuit.
Switch off the pump by positioning the main switch to O : the white indicator Power
turns off.
9.5.3 Conditioning the pump for shipping
Install the transport flange (except for A 124H, A 204H, A 204X, A 2404H, A 2404X
models)
(see 15.1) .
– Remove the top cover.
– Attach the yellow transport flange using the screws: 1 screw (or 2) on the pump
flange and 2 on the frame rails.
– Reinstall the cover.
Install the connecting accessories provided with the pump when it was first delivered.
Contact the service center to order accessories if necessary
(see 13) .
Provide a nitrogen supply with the required characteristics (see 14.2.3) .
Seal the inlet port with inlet blanking plate delivered with the pump.
Connect the nitrogen to the gas connection located on the inlet blanking flange.
Pressurize the pump with dry nitrogen to a relative pressure of 200 hPa.
When the nitrogen flows out of the exhaust, seal it up with the provided accessories.
Disconnect the nitrogen purge connection.
Note : In case of a pump transfer to an other plan/site for reinstallation, it is necessary to
drain the oil from the pump housings before shipment. Keep the oil and perform the oil
filling before pump start-up.
WATER IN
WATER OUT
A
B