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Always ensure the washer is inserted into the hose connection to prevent 
leakage 

 
Shown here is the delivery hose 
connection.  The delivery hose is a 
high-pressure hose which is screwed 
onto the connection found at the left-
hand side of the unit in the lower left 
corner. 
 
Connection is a simple thread 
connection.  Insert the washer to 
prevent leaks, screw connect the 
fitting to the tread on the pipe from 
the unit and tighten with a suitable 
tool. 
 

You only need to tighten to a normal tightness for this type of fitting.  There is 
no set tension required for this connection.  If, when the unit is operating, this 
connection leaks, check for tightness.  If unit continues to leak, then shut down 
and remove the delivery hose and check for damage to the seal.  If seal is 
damaged, replace seal and reconnect. 

 

How to connect to the water source: 

 

The water source for the product will generally be the same water that has 
oxygen delivered back to it, although not always.  For example, if the product is 
used in an aquaculture sea cage, the water source will be the ocean water beside 
the unit.  If in a land-based prawn farm, it will normally be water drawn from 
the prawn pond.  If used in agriculture irrigation, water would normally be 
drawn from the irrigation supply channel or head ditch and may be delivered 
into a head ditch or direct to field. 
 
Connection of the suction lines requires the connection of two hoses – one hose 
to the priming pump and the other to the main inlet 

 
 
 

Summary of Contents for MBG-N5.5

Page 1: ...OPERATION AND MAINTENANCE MANUAL Version 2 April 2019...

Page 2: ...assist in control of unit for bubble generation Suction hose that connects foot valve to inlet Suction Hose that connects foot valve to primer pump Foot valve in cage High pressure delivery hose with...

Page 3: ...uccessfully operate outside in all weathers The product requires mechanical lifting equipment to place into position or shift from one position to another It is feasible to bolt the frame to a specifi...

Page 4: ...for tightness If unit continues to leak then shut down and remove the delivery hose and check for damage to the seal If seal is damaged replace seal and reconnect How to connect to the water source T...

Page 5: ...other end of the larger hose is connected to the fitting found on the lower left side of the unit and inside the unit Feed the hose though the hole provided This connection is in front of the dischar...

Page 6: ...length is required if the unit is relocated this can be achieved using a three phase extension making sure that any connection is kept out of water that may be around the unit Connection is simple and...

Page 7: ...purpose one is to prime the main pump at start up and the other is to prime the main pump during operation as required This process is automated and requires no operator intervention once the switch i...

Page 8: ...and has a set screw adjustment on the top There is no need to adjust the left hand actuator Take care as this actuator does get hot You will not need to adjust the right hand actuator only the air val...

Page 9: ...e to adjust the pressure you need to adjust the air intake actuator Adjusting the air intake actuator The air intake actuator is the right hand side actuator which has the blue open plug injected in t...

Page 10: ...bles will clear once the unit is turned off as they break to nanobubbles and both remain in the water as a bank of air for some considerable time Maintenance The Microbubble Generator is designed to o...

Page 11: ...ure the unit is creating microbubbles at its optimum capacity If it is noticed this tends to change check the lock nut has not worked loose If it has readjust and retighten the lock nut Also check the...

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