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Step 1. Relieve Pressure
1. Shut off all sources of pressure and relieve
pressure from the vessel, following the
system manufacturer's recommendations.
Step 2. Disconnect Permeate Port
1. Disconnect permeate piping as required at
nearest convenient joint, being careful not to
place
undue
connections of the permeate port(s).
Caution: DO NOT tap on fittings as this could
damage the ports.
Step 3. Examine End Enclosure
1. Examine enclosure of vessel for corrosion.
Metal oxidation products and mineral deposits
can interfere with vessel disassembly. If any
is evident, proceed as follows:
b) Loosen any deposits with a small wire brush
and / or a medium grade piece of
TM
ScotchBrite
.
c) Flush away loosened deposits with clean
water.
Loosening deposits
OPENING THE VESSEL
STEP-BY-STEP GUIDE
stress
on
the
threaded
Step 4. Removing Head Retaining Ring
1. No special tools are required for this
operation. Engage your fore finger in
the end tab of the retaining ring, lift it up
and out of the retaining ring groove in
the shell.
Lifting end of retaining ring out of groove
2. Remove the retaining ring from the
retaining ring groove in the shell. This is
accomplished by running your fingers
behind the retaining ring as it continues
to exit the groove.
3. If the retaining ring is difficult to remove,
try soaking with a warm release agent
such as LPS or WD40, being careful to
avoid any contamination of membrane
element. Take care to avoid hitting or
levering against the vessel, as this could
result in delamination.
Removing the retaining ring from the groove
4. Remove the retaining ring from the
stainless steel groove in the shell. This is
accomplished by running your figure
behind the retaining ring as it continues
to exit the groove.
Page 10 of 38
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