Diving Hookah Operation
Location:
Position the diving hookah on a stable and reasonably level surface. The diving hookah does not
contain any lubricating fluids so the surface does not need to be perfectly level. Locating the diving hookah on
an excessively sloped surface however could al
low it to slowly ‘creep’ due to vibration while running.
Ensure there is sufficient room around the diving hookah to allow a free flow of cooling air to the cooling fan
and from the cooling fan.
Be mindful that the diving hookah draws breathing air from underneath the cooling fan cover. The air being
drawn into the cooling fan is the air that will be supplied to the diver. Be constantly mindful of the air quality at
the cooling fan. Boat motors, generators, fuel supplies and batteries are all potential sources of breathing air
contamination.
Power Connection:
Connect the diving hookah only to a 24 volt battery. Connect the
RED
positive cable to the
positive (+) battery terminal. Connect the
BLACK
negative cable to the negative (-) battery terminal. Ensure the
connections are secure.
The unit is fitted with 1.8m cables. Extending the cables over greater distances will result in a drop in voltage
reaching the electric motor. Lower voltages reaching the motor can cause damage and overheating.
Additionally lower voltage will reduce the rpm of the motor thereby reducing the air output. Any extensions to
the power cables should be carried out by a suitably qualified electrical specialist and may require upgrading
the cables to a larger diameter than those supplied to compensate for additional cable length.
Hose Connection:
The supplied hose/regulator assembly should be connected to the breathing air outlet
located on the end of the diving hookah filter assembly. The hose connects by simply pushing the male hose
connector into the female air coupling. Ensure that the chrome outer ring of the air outlet clicks back into place
securely. Ensure that the connection is secure.
Switching The Diving Hookah On:
The
diving hookah’s Electrical Control Box incorp
orates a red ON/OFF switch.
The diving hookah is switched on by pulling the red switch to the upper position. The compressor will then run
and pressurise the air storage tank to approximately 10 Bar. The compressor will then switch off automatically.
The compressor will cycle on and off as air is used by the diver, constantly re-pressurising the air storage tank
to approximately 10 Bar.
Outlet Pressure Regulation:
The outlet air pressure (air to the diver via the filter) is reduced by a pressure
regulator. The pressure regulator is mounted under the pressure gauge and the pressure gauge displays the
regulated outlet air pressure. The pressure regulator can be adjusted by pulling the red adjustment knob up
until it clicks and then turning the knob until the desired outlet pressure is obtained. Once adjusted, the knob
should be pushed back into place until it clicks. The outlet air pressure will be factory set to approximately 4
Bar and adjustment is not generally necessary. Raising the outlet air pressure can place excessive strain on the
diving air hose, fittings and 2
nd
stage regulator/mouthpiece.
After Use:
After diving operations are completed the diving hookah should be switched off by pushing the red
ON/OFF switch to the lower position. The air storage tank should be drained of air via the drain valve located
on the lower side of the tank. Moisture which has accumulated in the tank during operation will also drain and
this is quite normal. It is also normal for the moisture to contain discolouration.
