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Clarus Environmental Recirculating Media Filters User Manual

Page 9

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9

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Section 2: Media Filter (Pump Discharge) Installation Instructions

1. Excavate a hole for the media filter, large enough to build the liner support

walls. NOTE: Support walls should extend a minimum of 4” above the

original grade to allow surface water to be diverted away from the media filter.

2. Excavate a 24” diameter x 6” deep hole with sloping walls in the center

of the media filter excavation (see Figure 4 on page 8).

3. Excavate a trench for the supply piping and for the drain piping to the

media filter.

4. Smooth, rake, compact and level the bottom of the excavation as required. If

additional leveling material is required, use the media/gravel material.

5. Erect the support walls of approved material and size. Pressure treated

2x10’s or concrete are recommended.

6. Using a 2” hole saw, locate and cut a hole in the support wall for the

supply pipe penetration. The hole should be horizontally centered on the

wall being penetrated and the edge should be 1½” above the 24” of filter

media (see # 6 on page 6 and Figure 4 on page 8).

7. Using a 2” hole saw, locate and cut a hole in the support wall for the

discharge pipe penetration. This should be on the opposite wall from

the first hole. The hole should be horizontally centered on the wall being

penetrated and the edge should be 1½” above the 24” of filter media (see

# 6 on page 6 and Figure 4 on page 8).

8. Using a 1½” hole saw, locate and cut a hole in the support wall for the

prewired conduit to penetrate. The hole should be 12” to the left or right

of the 2” supply pipe hole and the edge should be 3” above the 24” of

filter media.

9. Install the protective mat.

10. Install the liner, making bottom and corners smooth. Excess should be

laid over the top and tucked down the outside of support walls.

11. Using a utility knife, cut a hole through the liner to match the two 2” and

one 1½” holes cut in the support walls.

12. Install the media filter pump riser in the 24” x 6” central depression. The

two cutouts should face the support walls that have the holes cut

in them.

13. Install 6” of the appropriate under drain media (¾” to 1½” gravel typical)

in the 24” x 6” depression around the riser for support.

14. Cut the 4” drainpipe to the required lengths. The pipe should protrude

into the riser 1” and extend out toward the support walls as close

as possible.

15. Place the open end of the drainpipe into the riser.

16. Attach the 4” end caps or screened vent risers to one end of each

drainpipe section.

17. Install 8” of the appropriate under drain media (¾” to 1½” gravel typical).

While filling, be sure to position drainpipe properly. Backfill 8” with the

excavated material outside the frame as you fill inside the frame.

18. Clean the area on the liner around the drain supply penetration holes

with Firestone Quick Prime Plus. Apply the primer with a scrubber pad

or clean cotton rag. Thoroughly scrub the bonding area three times with

primer. Allow the primer to dry for 10 minutes. Remove the protective

paper from seal boot adhesive. Do not touch the adhesive surface. Place

boot adhesive against cleaned and smoothed liner surface. Press the

boot with a roller or acceptable tool to ensure bubbles and wrinkles are

removed. DO NOT PEEL BOOT BACK TO TEST SEAL.

19. Slide the 1¼” penetration pipe in the inlet seal boot. The seal boot may

need to be trimmed to the appropriate diameter. The boot should fit snug

with no wrinkles.

20. Place the hose clamp around the boot onto 1¼” penetration pipe and

tighten. Apply a bead of Firestone lap sealant caulk where the pipe boot

meets the pipe.

21. Slide the 1¼” penetration pipe into the discharge seal boot. The seal

boot may need trimmed to the appropriate diameter. The boot should fit

snug with no wrinkles.

22. Place the hose clamp around the boot onto 1¼” penetration pipe and

tighten. Apply a bead of Firestone lap sealant caulk where the pipe boot

meets the pipe.

23. Remove the fitting from the end of the prewired conduit with the 18”

leads and feed it through the 1¼” hole in the support wall up to the

pump riser.

24. Slide the prewired conduit through the seal boot. The seal boot may

need trimmed to the appropriate diameter. The boot should fit snug with

no wrinkles.

25. Reattach the fitting onto the end of the conduit.

26. Place the hose clamp around the boot onto prewired conduit and tighten.

Apply a bead of Firestone lap sealant caulk where the pipe boot meets

the pipe.

27. Lay the prewired conduit back over the support wall temporarily.

28. Assemble the pump, discharge pipe, vertical float switch and the

alarm float.

29. Using a 1¾” hole saw, locate and cut a hole in the pump riser for the

pump discharge. The hole should be on the same side as the discharge

hole cut in the side of the support wall and the edge should be 1½” above

the 24” of filter media (see # 6 on page 5 and Figure 4 on page 7).

30. Place the pump, discharge pipe and float assembly down into the

pump riser.

31. Using a 2-3/8” hole saw, locate and cut a hole in the pump riser for the

J-Box. The hole should be on the same side as the prewired conduit

hole cut in the side of the support wall and the edge should be 3” above

the 24” of filter media, or 28” to the center line of the 2” hole from the

underdrain media (see # 6 on page 5).

32. Install 24” of the specified filtering media. Backfill 24” with the excavated

material outside the frame as you fill the inside the frame.

33. Insert the 1¼” discharge pipe section through the seal from the inside of

the riser and attach it to the elbow of the discharge assembly attached

to the pump.

34. Attach the discharge pipe to the discharge penetration pipe.

35. Install the J-Box and conduit into the pump riser.

36. Install 1½” of the appropriate overlay media (¾” to 1½” gravel typical).

37. Place manifold and distribution piping on overlay media. Remove the

protector plugs from the manifold and the distribution pipes as installing.

38. Attach the manifold to the supply penetration pipe.

39. Attach the distribution pipes to the manifold ensuring the elbow end is

vertically plumb.

40. Snap the orifice shields over the holes in the bottom of the distribution pipes.

41. Slide the risers over the clean outs (90° sweep elbow). Place appropriate

overlay media (¾” to 1½” gravel typical) around risers to hold them

in place.

42. Install 3” to 4½” of the appropriate overlay media (¾” to 1½” gravel

typical). While filling, be sure the discharge pipes stay positioned.

43. Install a protective buried fence (optional).

44. Install 3” of the appropriate overlay media (¾” to 1½” gravel typical). A

maximum of 8” of overlay media is allowed above the discharge pipes.

45. Make final supply and drain connections if this has not already

been done.

46. Finish by backfilling and landscaping. Be sure there is a 4” (minimum)

berm surrounding the media filter to ensure that no surface water enters

the media filter system.

47. Extend 1¼” discharge pipe from media filter pump to the pressure flow

splitter. The splitter MUST be located at the highest point to have gravity

flow to drain field and dose tank. If pressure is required at the drain field,

consult factory.