8. MAINTENANCE
Depletion of Purifier
Depletion of the purification material typically is indicated when the
purification material renders unacceptable impurity concentrations
in the process gas delivery stream.
Depleted and partially depleted purification materials alike are
classified as hazardous production materials. Accordingly, disposal
of depleted or partially depleted purification material must be
accomplished at an appropriate hazardous production material
disposal facility only (ref. Disposal Procedure in Section 12).
9. PURGING PRIOR TO DISCONNECTING AND REMOVING
PURIFIER (TYPICAL)
Neither purging equipment nor purging protocol is provided. Both
remain the sole responsibility of the user. The typical protocol
offered here is for “guideline” purposes only. It may need to be
suitably adapted to specific applications. Should doubt exist as to
whether a contemplated purging protocol is suitable, or for advice
on purging equipment requirements, contact Pall Corporation SLS
for technical assistance.
DANGER!
PURIFICATION MATERIAL BEDS THAT HAVE CONTACTED HAZARDOUS
GASES MUST BE ADEQUATELY PURGED BEFORE DISCONNECTION
If a hazardous gas has been purified, its concentration within the
purifier and associated piping must be reduced to less than the gas
specific threshold limit value (TLV) prior to purifier disconnection.
To accomplish this goal, purge purifier with at least the minimum
