Relocate The Dry Pumping System For Maintenance - Edwards EXS Series Instruction Manual

Action
Check the purge gas supply pressure and hoses
Check all electrical connections
Check and clean exhaust pipe, elbow and check valves
Replace the blow off valve (BoV) ball
Replace the electric cubicle filter elements
Complete overhaul in our service centre

7.3 Relocate the dry pumping system for maintenance

WARNING:
The substances that accumulate in the exhaust pipe, elbow and check valve (if
installed) can be dangerous. Do not allow these substances to come into contact with
skin or eyes. Do not inhale vapours from these substances. Fit blanking caps to the
inlet and outlet flanges when moving the exhaust pipe, elbow or check valve around
the workplace.
The majority of synthetic oils/grease can cause inflammation of the skin (dermatitis).
Safety precautions must be taken to prevent prolonged skin contact with these
substances. Use of suitable protective gloves and clothing along with a respirator is
recommended if contact with the substance is anticipated. System process gases and
residue can be highly toxic. Take all necessary precautions when handling
components that have, or could have, come into contact with them, including
O‑rings, lubricants and all exhaust accessories.
WARNING:
Suitable lifting equipment must be used to move the dry pumping system. It is too
heavy to lift by hand.
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
and allow the dry pumping system to cool down.
A41870880_A
A41870880_A - Maintenance
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Frequency
6 months or 4000 operating hours
6 months or 4000 operating hours
1 year or 8000 operating hours
1 year or 8000 operating hours
1 year or 8000 operating hours
4 years or 32000 operating hours
Operation
07/2021 - ©Edwards Limited
on page 50