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IOM53CART Rev.1 June 2010 Filtration.Eaton.com
Cartridge Maintenance
Model 53 BTX Duplex Strainer, Sizes
3
⁄
4
” - 4”
CARTRIDGE MAINTENANCE
IMPORTANT
For 2”, 2
1
⁄
2
”, 3” & 4” Strainers, it is advisable to support
the cartridge assembly by external means (hoist, slings, etc.)
during cartridge maintenance.
For
3
⁄
4
”, 1”, 1-
1
⁄
4
” & 1-
1
⁄
2
” Strainers, use
your own discretion to support the cartridge
assembly during cartridge maintenance.
For Tools and Items, refer to Diagram & Parts List, pg. 1
CARTRIDGE REMOVAL AND INSPECTION
CAUTION
To remove cartridge assembly, first isolate the strainer
(shut down your pumps, close valves, etc.). Slowly
open vents, releasing strainer internal pressure and open
plugs, Item 9
at bottom of basket wells (or the drain
valves if installed) to drain the fluid from the strainer.
1. Rotate the
handle, Item 17
, 90 degrees to
“Inlet”
on
cartridge, Item 4.
2. Remove the four (4)
cap screws, Item 13
that secure the
cartridge assembly to the strainer body.
3. Remove plastic caps from threaded holes “A” on top of
cartridge. Thread the
Extractor Tool
(provided), into a
threaded hole in the top of the cartridge. Use a socket or box
wrench for turning. As the
Extractor Tool
turns, the cartridge
rises from the strainer body.
4. As the
upper seals Item 22 and upper seats Item 23
clear the
top of body, remove the upper seals and seats.
Top ball, Item 24
cannot be removed with the handle
positioned over the inlet.
Do not remove the
Top Ball
at this time.
5. Continue turning
Extractor Tool
until the
lower seals, Item
22
and
lower seats, Item 23
become visible as the cartridge
assembly continues to rise.
Lower seals, seats and ball remain in place with
the handle positioned over the inlet. Do not
remove any of these components at this time.
6. Continue to raise the cartridge assembly until it has cleared
the cartridge bore of the body.
7. Place the cartridge assembly on a clean surface. With
cartridge upright & inlet towards assembler, remove
lower
seats
& lower seals
at this time.
8. Slowly rotate the
handle, Item 17
, 90 degrees counter
clockwise until the handle makes contact with
stem retainer,
Item 11. Pay special attention to both balls as they may
shift and dislodge from the cartridge at this time.
9. Remove the
lower and upper balls, Item 24.
10. Remove the
handle screw, Item 18
(and washer if provided)
and then remove
handle, Item 17
. Remove the two (2)
screws, Items 12 & 14
that hold down the
stem retainer,
Item 11.
Remove the
stem retainer, Item 11 and stem
retainer washer, Item 19.
11. Reattach
handle, Item 17
to
top stem, Item 25
with
handle
screw, Item 18
and washer if provided. Pull
top stem, Item
25
out from top of cartridge. Next remove
middle stem, Item
26
by pushing downward through cartridge central hole.
12. Inspect the two (2)
cartridge O-rings, Item 21,
the four (4)
top
and middle stem O-rings, Item 20
and replace. Inspect
top
and bottom balls, Item 24
for scoring. Replace as necessary.
IMPORTANT
Keep used seats separate from new
seats to prevent reinstalling used seats by mistake
CARTRIDGE REASSEMBLY
Note: Make sure that all parts are free from dirt.
IMPORTANT
All O-rings and mating surfaces require lubrication.
Use a light film of Process Compatible lubricant.
13. Lubricate
middle stem O-rings, Item 20
and inside of the
cartridge middle stem bore.
14. Insert
middle stem, Item 26
from bottom of cartridge into the
cartridge middle stem bore (chamfer provided).