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3
2
Fig. 2:
Internal view of NTI 101
1 Manifold valves
2 CMS tanks
3 Safety valve
�.5
Description of function
The NTI 101 works on the principle of Pressure Swing
Adsorption (PSA). PSA is a process of generating nitro-
gen from compressed air.
Compressed air is supplied through a pneumatic line
connected to a Filter Regulator Combination (FRC)
where moisture, oil and particulate matter are filtered.
Based on their molecular characteristics, compressed
gases have a tendency to adhere to solid surfaces
known as "adsorbents". The process of compressed
gases adhering to adsorbents is known as "adsorption".
When the compressed air is passed through a tank
with a Carbon Molecular Sieve (CMS), the molecules of
oxygen are adsorbed by activated carbon, which is an
adsorbent. The adsorbed gases are let out to the at-
mosphere. During this phase pressurized air is let into
another tank. Again, the oxygen molecules are adsorbed
in the CMS. The nitrogen is collected in a tank for inflat-
ing the tires. The nitrogen thus produced has a purity of
about 95 to 99%.
The toggle switch (Fig. 1, Pos. 12) can be used to select
air or nitrogen filling. The selected gas is filled into the
vehicle tire through a filling hose. The NTI 101 should
be supplied with a constant supply of compressed air
at a minimum pressure of 8 bar.
Bosch Limited
�.5.�
CMS and nitrogen tanks
Two CMS tanks (Fig. 2, Pos. 2) are used to convert air
to nitrogen. The separated nitrogen is collected in a
storage tank for further distribution. The CMS tanks are
firmly fixed and bolted to the cabinet. The nitrogen tank
is stationed at the rear of the NTI 101.
�.5.2
Filters for water and oil separation
The input pneumatic line is connected to the Filter
Regulator Combination (FRC) (Fig. 6) which acts as an
1
input and filtration device. Air from the compressor at a
minimum pressure of 8 bar is passed through the FRC
where the moisture, dirt and oil are filtered. The col-
lected moisture, dirt or oil can be discharged manually
by opening the drain on the FRC. The regulator is set to
allow a maximum of 10 bar.
!
Do not tamper with the regulator setting of the FRC.
�.5.�
Hose for inflation
Air or nitrogen is filled into the vehicle tire via a 8 m
filling hose. A filling nozzle fixed to the hose is used
to connect the filling hose to the vehicle tire. When
not in use, the filing hose is wound to the hose holder
(Fig. 1, Pos. 4).
�.5.4
Keypad, pressure gauges and status indica-
tion LEDs
Selection of air / nitrogen can be done via the keypad
(Fig. 1, Pos. 10). The pressure can be set through the
input keys on the keypad. The pressure sensor detects
the tire pressure. Based on the set pressure and mode,
the tire is filled with nitrogen or air via solenoid valves.
The result of the operation is displayed on the LCD
screen. A pressure gauge is used for indicating the pres-
sure in the nitrogen storage tank. LEDs are provided to
indicate the status of service.
LED status
Red LED glows
Blue LED glows
Green LED glows
�.5.5
Power cable and master switch
The NTI 101 is connected to 230 VAC 10%,
50 Hz 1% supply via a power cable. The NTI 101 can
be powered on by turning the master switch in the
clockwise position.
�.5.6
Vacuum pump (optional)
The vacuum pump (Fig. 5) is used for deflation. The
vacuum pump can be switched on or off by selecting
the Deflate option from the main menu. Refer chapter 6
for more details about the software functions.
Product description | N�� ��� | 7
N�� ��� | 7
�ndication
Completion of inflation or de-
flation
Air mode selected
Nitrogen mode selected
F 002 DG9 A03
| 7
en
|
2014-07-28
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