Acon
Frequency
Check the purge gas supply pressure and hoses 6 months or 4000 operang hour
s
Check all electrical connecons 6 months or 4000 operang hours
Check and clean exhaust pipe, elbow and check valves 1 year or 8000 operang hours
Replace the blow o valve (BoV) ball
1 year or 8000 operang hours
Replace the electric cubicle lter elements 1 year or 8000 operang hours
Complete overhaul in our service centre 4 years or 32000 operang hours
7.3 Relocate the dry pumping system for maintenance
WARNING:
The subs
tances 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 anges when moving the exhaust pipe, elbow or check valve around
the workplace.
The majority of synthec oils/grease can cause inammaon of the skin (dermas).
Safety precauons must be taken to prevent prolonged skin contact with these
substances. Use of suitable protecve gloves and clothing along with a respirator is
recommended if contact with the substance is ancipated. System process gases and
residue can be highly toxic. Take all necessary precauons when handling
components that have, or could have, come into contact with them, including
O‑rings, lubricants and all exhaust accessories.
WARNING:
Suitable liing equipmen
t must be used to move the dry pumping system. It is too
heavy to li by hand.
WARNING:
Remo
ve bulky accessories such as inlet lters, 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 c
ooling water from the dry pumping system if transporng or storing it in
condions 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 operang locaon and move it to another
locaon to carry out maintenance, use the following procedure:
1. Purge the dry pumping system and shutdown as described in Operaon on page 50
and allow the dry pumping system to cool down.
07/2021 - ©Edwards Limited
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A41870880_A - Maintenance