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Changeover and Cleaning Instructions
!
WARNING
BEFORE ANY KIND OF SERVICING, BE SURE TO CHECK PRESSURE
AND TEMPERATURE OF THE SYSTEM AND WHETHER THE FLUID
IS CORROSIVE OR OTHERWISE DANGEROUS. BODILY INJURY AND
PROPERTY DAMAGE COULD RESULT IF APPROPRIATE PROTECTION
AND SAFETY PROCEDURES ARE NOT USED. READ THE FOLLOWING
INSTRUCTIONS COMPLETELY AND CAREFULLY BEFORE SERVICING.
Keep these instructions for future reference.
In the instructions below, it is important to keep in mind that the
"dirty" chamber is the one in use NOW. The handle is always
directly over the one in use. The "clean" chamber is the one that
is not in use. See Figure 1. For units with gear operator, see
Figure 2.
1. Open pet cock on clean chamber.
2. Admit liquid slowly into the clean chamber by turning the
diverter handle to the halfway position over the inlet or turn
gear operator to position "1 an 2".
3. When liquid flows from the pet cock, close the pet cock.
4. Examine clean chamber for leaks. If none, proceed with
step 6.
5. If leakage occurs, turn diverter handle back to its position
over the dirty chamber. Vent and drain the clean chamber,
remove the cover, correct the cause of leakage, replace
cover and repeat steps 1 through 4.
6. Slowly shift flow to the clean chamber by slowly rotating the
diverter handle over the clean chamber. If there is no
leakage, proceed to step 7. If there is leakage, repeat step 5.
7. Open pet cock slowly on the dirty chamber.
8. Open drain plug on dirty chamber and allow liquid to drain
while removing the cover.
9. When liquid level is below the top of the strainer basket,
close the drain plug.
10. Remove the strainer basket and allow the liquid to drip into
the strainer body.
11. Clean the basket and examine for damage. Repair or re
place as necessary.
12. Reinstall basket.
13. Examine cover O-ring. Replace if damaged.
14. Reinstall and secure cover.
15. Shift diverter handle back toward the center position.
16. When liquid flows from pet cock, close pet cock.
17. Examine for leaks. If leakage is evident, go to step 5. If there
is no evidence of leakage, shift diverter handle back to its
position over the clean basket. The newly clean basket is
now ready for the next changeover when needed.
Disassembly Instructions for Service and
Maintenance
!
WARNING
BEFORE ANY KIND OF SERVICING, BE SURE TO CHECK PRESSURE
AND TEMPERATURE OF THE SYSTEM AND WHETHER THE FLUID
IS CORROSIVE OR OTHERWISE DANGEROUS. BODILY INJURY AND
PROPERTY DAMAGE COULD RESULT IF APPROPRIATE PROTECTION
AND SAFETY PROCEDURES ARE NOT USED. READ THE FOLLOWING
INSTRUCTIONS COMPLETELY AND CAREFULLY BEFORE SERVICING.
Keep these instructions for future reference.
This strainer can remain in the line while being serviced. If
desired, it may also be removed from the line servicing. Care
should be taken when removing the basket housing 3" and
larger units. Slings should be used to remove the basket
housing on these larger units. DO NOT LIFT the strainer or the
basket housing by the knobs or gear operator.
1. Shut down flow on both sides of the strainer.
2. Turn diverter handle toward the center position or turn gear
operator to position "1 AND 2". Open pet cocks on both
chambers to bleed pressure.
3. Open drain plugs and drain both chambers.
4. Remove the knobs from the basket covers and remove the
covers. Pull the strainer baskets from the basket housings.
5. Turn diverter handle toward the main basket housing
(Basket #1).
6. Loosen nuts holding the basket housing to the main housing
and carefully pull basket housing from the main housing.
(Use a sling, if needed, to insure that the basket housing
does not drop.)
7. Slide both balls from the main housing by pulling them
directly out from the housing.
8. Remove the PTFE seals from both the main housing and the
basket housing.
9. If only the seats are to be replaced, skip to Step 16.
10. Remove the lower stem from the main housing by pressing it
down from the top into the lower ball area.
11. Remove handle or gear operator from the main housing.
12. Remove the upper stem from the main housing by pressing
it down from the top into the upper ball area.
Figure 1
Figure 2
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