Filter
Top Products
6. Lift the vessel out from the top. Use the boom and
hoist for models 8DM100 and 8DM150; vessels
for smaller models can be lifted out by hand.
7. All vessels may be discarded, except BA17 and
AC17. These vessels can be returned to the factory
for credit. See page 11 for return procedure.
8. Lower a new vessel into place from the top. Use
the boom and hoist for models 8DM100 and
8DM150; vessels for smaller models can be low
-
ered by hand.
9. Close the hinged support clamps to secure the new
vessel to its support bracket.
10. Connect the unions on the top and bottom of the
vessel.
11. Replace all cabinet panels.
12. Record the date of change on the spare label sup-
plied with the replacement vessel; stick the label to
the top of the purifier.
WARNING
To restart the purifier, follow the procedure
described in the Start-Up section of this man-
ual.
Boom Assembly
A boom and hoist assembly are provided with Models
8DM100 and 8DM150. Use the boom and hoist to re
-
move and replace the activated carbon filter and cata
-
lyst vessel according to the Preventive Maintenance
Schedule in this manual. The boom is stored inside the
cabinet in the back left corner. The hoist is strapped to
the bottom of the purifier cabinet frame.
To use the boom and hoist:
1. Lift the boom assembly out from the top and set it
on one of the bases provided on two sides of the
purifier (each base looks like a closed-off black
pipe sticking up near the top of the purifier).
2. Attach the hoist to the boom hook.
3. Swing the boom hook over the vessel.
4. Attach the hoist to the handles provided on the
vessel.
5. Disconnect the unions on the top and bottom of
the vessel.
6. Using the hoist, lift the vessel out of the purifier
cabinet.
7. Swing the boom to the side and use the hoist to
lower the vessel to the floor.
8. Attach a new vessel to the hoist; using the boom
assembly, lift the vessel above the cabinet and
lower it into place.
9. Store the boom assembly inside the purifier cabi
-
net.
Coalescing Filter Element Replacement
To replace the element:
1. Shut down the purifier according to the Shutdown
procedure.
2. Disconnect electrical power to the automatic drain
valves.
3. Remove cabinet panels to expose filter.
4. Carefully remove black foam insulation from filter
bowl and set aside.
5. Mark center drain line and outer drain line for re-
connection, then disconnect the drain lines from
the filter bowl.
6. Remove the threaded coalescing filter bowl from
the top casting, using a strap wrench if necessary.
7. Remove the saturated element from the bowl.
8. Clean the bowl with soap and water. Do not use
solvents.
9. Insert a new element in the bowl.
10. Reattach the bowl to the top casting.
11. Reattach the center and outer drain lines.
12. Replace the black foam insulation and secure it
with tape.
13. Reconnect electrical power to the automatic drain
valves.
14. Replace all cabinet panels.
Pyramid 8000
®
Series Purifiers (Bulletin 289) 13