Draining The Cooling Water - Edwards iXL120N Instruction Manual

If you want to remove the iXL120 system from its operating location and move it to another location where you will
do maintenance, use the following procedure:
1. Purge the iXL120 system and shut down the iXL120 system as described in
to cool down.
2. Isolate the power by disconnecting the mating-half from the electrical supply connector, then isolate the water
supply.
3. Switch off your cooling water supplies. Disconnect the cooling-water supply followed by the cooling-water
return.
4. Disconnect the inlet and outlet from the vacuum and exhaust systems and fit blanking caps.
5. Adjust the levelling feet so that the iXL120 system rests on the castors.
6. Move the iXL120 system to a location where it can be safely stored until an Edwards service engineer can be in
attendance.
After maintenance is complete, re-install the iXL120 system as described in
5.3

Draining the cooling water

Use of suitable protective gloves and eye protection is recommended when carrying out this
procedure. Personal protective equipment should be checked and used as specified by its supplier.
1. Relocate the system for maintenance as stated in
2. Connect a regulated clean dry air supply (1.4 barg or 20 psig) to the cooling water supply connection
item 2). Do not turn on the air supply yet.
3. Connect a drain hose to the cooling water return connection
drain hose in a suitable collection container.
4. Turn on the clean dry air supply.
5. Monitor the drain hose outlet until no further cooling water is purged.
6. Fit the external EMS link plug (supplied) to the EMS connection on the rear of the system
you do not, you will not be able to purge the water system effectively.
7. Connect the system to a suitable mains electrical supply. The control system will now energise each temperature
control valve, purging the cooling water from all flow paths. After one minute, remove the electrical supply.
Wait for 10 seconds and then re-connect the electrical supply and repeat the entire process. Continue repeating
until no further cooling water is purged from the system.
8. The cooling water drain procedure is now complete. Disconnect the air supply, electrical supply and the drain
hoses. Dispose of the drained cooling water appropriately.
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Edwards and the Edwards logo are trademarks of Edwards Limited.
Section
WARNING
Section 5.2.
(Figure 2, item 4). Position the open end of the
A541-11-880 Issue A
Section 4 and allow the iXL120 system
3.
(Figure 2, item 15). If
(Figure 2,
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