3-5. CARTRIDGE FILTER TUBE REPLACEMENT.
This task consists of:
Silicone grease (from storage chest)
ROWPU shutdown (para 2-14)
General Safety Instructions:
Cartridge filter drains No.1 and No. 2 open.
ROWPU piping and equipment can
contain extremely high pressure during
and after operation. If this pressure is
maintenance, serious injury or death
may result. Be sure to open all drains
and vent valves before performing
Removal. Refer to figure 3-6. The cartridge filter contains eight filter tubes. Cartridge filter tubes should be
changed when CARTRIDGE FILTER gage differential pressure rises above 20 psid.
Cover is installed under spring tension. Relieve tension by loosening eyebolts a few turns at a
time in an alternating pattern.
Mark position of cover on shell to aid installation.
Unzip access hole in top of canvas cover.
Disconnect hose (1) from coupling (2) on filter cover (3).
Loosen six eyebolts (7) and rotate them out of notches in filter cover (3).
Remove filter cover (3) and attached parts from shell (8).
Remove eight filter tubes (5) from shell (8). Discard filter tubes.
Installation. Refer to figure 3-6.
Install eight new filter tubes (5) in shell (8) making sure that the tubes seat in the bottom cartridge seats
Inspect preformed packing (6) for damage and replace if required. Lubricate preformed packing (6)with