36
INSTALLATION CONSIDERATIONS
• Excavate a hole 600mm in diameter and 1550mm deep
• When deeper invert levels are required, chamber extensions
are available on request
• Level the base of the trench with concrete (not supplied),
roughly 50mm deep
• Carefully lower the chamber into the hole, drop the straps on the outside
of the chamber and insert the tank outlet pipe into the chamber inlet hole
• Backfill around the pumping chamber with concrete up to the lip of the
chamber. Cover so no water enters the chamber and allow to fully set
• Concrete used must be the same as the backfill for the tank
• Lower pump into chamber
• Adjust the float switch cable so during floatation, the switch is 100mm
below the pump chamber inlet
• Place the manhole hatch on top of the pumping chamber so it is level
with the ground, seal the edges with concrete and allow to fully set
Illustration guide of a WPL Diamond tank and EPC
INLET
OUTLET
OUTLET
GROUND LEVEL
HIGH LEVEL FLOAT SWITCH
