CNG dispensers TATSUNO EUROPE ‐ Quick User Guide
29
4.1.8.
MANOMETER
It is located in the lower part of the pressure module column – Gxx identification in the dispenser diagram – see
Appendices 3.2, 3.3 and 3.4. The measuring range is from 0 to 400bar. It displays current filling pressure. It
contains glycerine filling for dampening pressure impacts. The manometer is maintenance‐free. Potential
defects are solved by replacement. Replacement may only be performed by an employee of the authorized
service company.
4.1.9.
PIPELINE SYSTEM AND THREADED JOINTS (FITTINGS)
Compressed natural gas is distributed within the OCEAN CNG dispenser by stainless or galvanized steel pipes
16x2.0, 12x1.5 a 6x1.0. Pipes are connected via threaded connections with screw rings.
We recommend checking tightness of joints at least
once a month
by using a foaming agent. When
detecting the pipeline system leak, close the inlet ball valves, disconnect the dispenser from power
supply and contact the authorized service. the repair of pipeline system leaks, replacement of sealing
or other damaged components may only be performed by an employee of the authorized service
company.
4.1.10.
FILLING AND VENTILATION HOSES
The filling hose with an internal diameter of 9.9 mm and 12.7 mm is intended for transporting compressed
natural gas from the dispenser to the vehicle. The ventilation hose with an internal diameter of 6.4 mm is
intended for transporting residual gas from the neck area of the delivery nozzle. Both hoses are supplied in a
standard length of 3M. At one side they end with a delivery nozzle and at the other side they end with a
breakaway coupling.
It is necessary to check mechanical wear of the hose at least
once a week.
The damaged hose must be
immediately replaced! Replacement may only be performed by an employee of the authorized service
company.
It is necessary to check tightness of the hose at least
once a month
by using a foaming agent.
It is necessary to check hose conductivity at least
once per 6 months
– i.e. resistance between the end
of the filling end piece and the central grounding terminal of the dispenser must be lower than 1 MΩ
(testing voltage of 500V) in a pressurized operating condition and also without pressure.
4.1.11.
FILLING END PIECE (DELIVERY NOZZLE, FILLING NOZZLE)
The filling end piece is intended for connecting the delivery hose to the pressure tank of the vehicle. The filling
end piece is formed by the filling neck and a three‐way valve mechanism controlled
by a lever. The filling neck ensures perfect connection with the end piece (connector)
of the vehicle pressure tank. The filling end piece is made so that it is not possible to
connect is incorrectly and no high physical force is needed for the attendant. The
three‐way valve server to open and close the gas flow rate and also to transport
residual gas (overpressure) from the filling neck of the nozzle. The delivery nozzle is
