Close each drain valve after all condensate has been vented from each separator.
Purifier Chamber Cartridge Replacement. Replace the purifier cartridge (7, Fig. D-13) as follows:
Slowly open purifier drain valve (17, Fig. 1-3) to relieve all pressure within the purifier chamber.
purifier chamber may contain high pressure. Never attempt to service purifier chamber
with pressure inside the system. Open drain valve and wait until all pressure has been
vented. Pressure can be monitored by gauge (19, Fig. D-2).
Change 3 4-2.1/(4-2.2 blank)