WARNING:
Remove bulky accessories such as inlet filters, silencers and knock out pots (if
installed) before moving the dry pumping system because they can make the
dry pumping system unstable. Do not exceed the topple angle of 23° when
moving the pump.
CAUTION:
Drain the cooling water from the dry pumping system if transporting or storing it
in conditions where the cooling water could freeze. Failure to do so could result
in the cooling water freezing in the dry pumping system and damage occurring
to the pumps and/or the cooling water pipelines.
To remove the dry pumping system from its operating location and move it to
another location to carry out maintenance, use the following procedure:
1.
Purge the dry pumping system and shutdown as described in
on
page 102 and allow the dry pumping system to cool down.
2.
Isolate the power and disconnect the electrical supply plug from the electrical
supply connector, then isolate the water and the gas purge supply.
3.
Disconnect the purge gas supply, taking care as any trapped gas under
pressure is released. Disconnect the cooling water supply followed by the
cooling water return.
4.
Disconnect the inlet and outlet from the vacuum and exhaust systems,
remove bulky accessories such as filters, silencers and knock out pots (if
installed) and then fit the blanking caps.
5.
If necessary, disconnect any other accessories from the dry pumping system.
6.
For dry pumping systems with castors, adjust the levelling feet so that the dry
pumping system rests on the castors.
7.
Move the dry pumping system to the location where maintenance will be
carried out.
After maintenance is complete, re-install the dry pumping system as described in
on page 78.
8.4.
Draining the cooling water
WARNING:
Use of suitable protective gloves and eye protection is recommended when
carrying out this procedure. Personal protective equipments should be checked
and used as specified by its supplier.
1.
Relocate the dry pumping system for maintenance as stated in
dry pumping system for maintenance
on page 107.
2.
Connect a regulated clean dry air supply (5 barg or 73 psig) to the cooling
water supply connection (
on page 12). Do not turn on the air supply
yet.
Maintenance
07/2021 - ©Atlas Copco
Page 108
1950840208_A
