20
Once the elements are clean, examine closely for any damage to the filter elements and the
support cage inside each element, finally check tightness of mounting screws. Refer to
Section 4.2 for instructions on replacing filter elements.
Please refer to Section 6.0 for “O” ring part numbers.
4.2 Replacement of Filter Elements
To replace the filter elements, follow the procedure below:
1. Lightly lubricate the “O” ring on each filter element holder using a site approved
lubricant. Ensure that each “O” ring is fitted properly within the groove on the
element holder.
2. Insert filter elements into each pod.
3. Examine the “O” rings on the ID and OD of the doughnut cover. If any damage is
found, then replace “O” ring. Check that the doughnut OD “O” ring is correctly
located in its groove.
4. Generously lubricate the ID doughnut “O” ring.
5. Replace doughnut shaped filter cover.
6. Replace in order, ‘Clampco’ ring clamp, red backing ring, and then the 6” filter cover
retaining ring.
7. Restart any pump, open all valves and carry out a backwash routine. Check filter
performance.
4.3 Removal of Indexing Valve
To remove the indexing valve, follow the procedure below.
1. Carry out a manual backwash, on completion, isolate and drain filter. The purpose of
this backwash is to ensure that the indexing valve is in the filtering position. Note:
backwash LED is NOT illuminated.
2. Remove control cover. This is done by lifting the cover straight up from the control
housing, being careful not to lift the cover too far from the housing in that the wiring is
attached to the circuit board within the control housing.
3. Disconnect control cover from circuit board by the white six pin plug located on the
underside of the control cover.
4. Disconnect all wiring from terminals, noting their position.
Note: It is important that
the position of the motor is not altered.
5. Remove the four screws securing the motor, gearbox and circuit board to the filter
housing. These screws must not be confused with the four screws holding the circuit
board to the motor/gearbox. The motor, gearbox, and circuit board can now be
removed from the filter.
6. The indexing valve assembly with its drive shaft is now visible. Remove the retaining
ring holding the valve assembly into the filter housing.
7. Screw in the two 6”
¼
UNC bolts of the Phoenix Extraction Tool, approximately
½
”,
see Section 6.0 for part number.
8. Carefully extract the valve assembly from the filter by pulling straight up on the
Phoenix Extraction Tool. If difficulty is experienced in removing the valve assembly,
then lever the square section cross bar of the Phoenix Extraction Tool against the
control housing using a flat bar.
