Connect the foam injection hose to the water pump using the quick connect
coupling and thread the other end into the fitting on injection pipe adaptor,
ensuring the hose connection is tight.
4.7.3 NOTES
Ensure the water pump discharge hose and the air supply hose are not
crossed or intertwined.
There must be a non-return valve in the foam injection line from the pump.
When drilling commences the water/injection pump should be brought on-line
before turning the air supply on.
The air flow to the rig will be controlled by the ball valve on the compressor,
there is no inbuilt control on the rig.
When drilling with a compressor do not change the direction of flow to
bypass.
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