NARDI COMPRESSORI Diving Hookah User manual

Diving Hookah –24v 225lpm
Operation and Maintenance Manual
Distributed In Australia By

Specifications
Power Source: 24v (1.8m Cables Fitted)
Motor: 24v Electric / 500 Watt / 25A / 2700 rpm
Compressor: 2 Cylinder / Oilless
Air Intake: 225 lpm (7.9 cfm)
Pressure - Tank: 10 Bar (142 psi)
Pressure - Outlet: Adjustable - 0 to 10 Bar (0 to 142 psi)
Tank: 3 Litre
Max. Number Of Divers: 1
Max. Recommended Depth: 15 metres
Unit Dimensions: 450mm(L) X 235mm(W) X 265mm(H)
Packaged Dimensions: 550mm(L) x 350mm(W) x 430mm(H)
Unit Weight: 14.5 kg
Packaged Weight: 19.0 kg
Noise: 62 dB
Warranty: 24 Months
Unpacking & Assembly
Packing List - Nardi Diving Hookah
- Nardi Hose / Regulator (17m)
- Operation & Maintenance Manual
Carefully remove the diving hookah and accessories from the box. Check that all the items listed above are
included. Inspect the diving hookah carefully to ensure no damage occurred during shipping. Do not discard the
packaging materials until you have inspected and satisfactorily operated the diving hookah.
This model Nardi Diving Hookah requires no assembly.

General Diving Hookah Safety
Diving can be dangerous at ANY depth. This diving hookah should ONLY be used by suitably
trained persons. If you are not suitably trained, then you should undertake an accredited diving
training course before operating the diving hookah.
• Do Not rely solely on the diving hookah. The diving hookah is an excellent primary source of breathing air,
however it is a mechanical device which can stop supplying air at any moment and without warning due to a
malfunction, disruption of power supply or disruption of air supply. A backup source of breathing air should
always be present when diving. A “Bailout Bottle” also known as a “Pony Bottle” with integral regulator is an
excellent backup air supply. Any backup air source needs to be sized sufficiently for a controlled ascent to the
surface.
• Do Not dive alone.
• Do Not operate the diving hookah if any components are damaged or inoperative. Check the diving hookah
and its accessories before use.
• Do Not modify the diving hookah or its accessories. Do not operate the diving hookah if it has been modified.
• The Breathing Air supplied to the diver is only as safe as the air at the diving hookah. The breathing air
utilised by the diver is being drawn from the air at the diving hookah cooling fan. Be constantly mindful of the
air quality where the diving hookah is located. Boat motors, generators, fuel supplies and batteries are all
potential sources of breathing air contamination.
• Cooling of the diving hookah is reliant on airflow. Allow room around the diving hookah for sufficient airflow
needed for motor and compressor cooling.
• Prior to any Maintenance being undertake, ensure the diving hookah is switched off and drained of all
pressurised air. For a 240v electric diving hookah, remove the plug from the electrical socket. For a 12v or 24v
electric diving hookah, disconnect the electrical cables from the battery.
• Prior to any Maintenance being undertaken, ensure the diving hookah has cooled to room temperature.

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 allow 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 incorporates 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 2nd 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.

Maintenance
The diving hookah requires very little maintenance.
Air Leaks: The user should always be on the lookout for air leaks. An air leak will cause the diving hookah to run
longer and more often than necessary which will be detrimental to the machine. An air leak will usually be
audible. Air leaks may also be present if the air storage tank continuously loses pressure. Once switched on, the
diving hookah should pressurise the air storage tank to approximately 8 Bar and the tank pressure should
remain at 8 Bar until air is used by the diver. A suspected air leak can be easily located using soapy water. Any
air leaks found should be rectified before continuing to use the diving hookah.
Breathing Air Filter Cartridge: The breathing air filter (mounted on the air storage tank) contains a replaceable
filter cartridge. The filter cartridge should be replaced every 12 months. If the diving hookah is being used
regularly in a commercial setting, then it may be necessary to replace the cartridge more frequently. The filter
cartridge can be accessed by unscrewing the knurled aluminium end of the filter housing along with the diving
hose connector. Replacement filter cartridges are available from AC Diving (Part Number AC036-101).
Service Parts: Service / Rebuild Parts are available for the diving hookah. The Service Parts available include
replacement Air Suction Filters, Piston Seals, O-Rings and Gaskets. Service parts may be required if the diving
hookah has been operated extensively in a commercial setting or if the diving hookah has been overheated.

Spare Parts
All replacement parts are available from AC Diving. Parts Diagrams can be viewed below.

Warranty
Your Nardi Diving Hookah is covered by a 24 month warranty against defective components. The warranty does
not cover normal wear and tear, nor does it cover defects caused by misuse or operation not in accordance
with the supplied Operation & Maintenance Manual.
Contact Details
AC Diving
Phone: [phone]
Email: [email protected]
Website: www.acdiving.com.au