4
STEP 4 BACKFILLING – up to the inlet
• The tank is to be filled with water evenly
throughout all chambers before any
backfill is placed around the system.
• Make sure all lids are closed before
backfilling.
• Backfill must not contain any large
stones, rocks or sharp objects and must
be carefully placed around the system.
• Sand or similar material is suitable for
backfilling, no greater than 7mm dia.
• Native soil should not be used when it
consists of heavy clay, since it may
cause subsidence or damage to the
system.
• Backfill must be watered and
compacted.
• Backfill evenly around the system up to
the bottom of the inlet.
STEP 5 CONNECTIONS
Inlet
• 100mm dia. pipe into the inlet.
Remove the Blower Box
• Remove the screws securing the blower
box to the adaptor ring (4 places) and
remove the blower box.
Attach the bracket to Blower Box
• Attach the L-shape brackets to blower
box base with screw (4 places).
• These parts are in the parts bag.
Return the Blower Box
• Reposition the Blower Box on top of the
risers and screw the brackets to the
risers (4 places).
• Aline the blower box with the label on the
cover.
• Make sure the top of the base is level.
Watered and compacted
Box
Screw to the adaptor rings
Secure to the top of riser
Caution: * Neglecting these processes may cause inundation of ground water.
* An out of level base may cause noise issues.
* Mounting risers more than 500mm would void the warranty.
Secure to the blower box base
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