NEXUS
Generator & Multi-head Inflator user manual
www.pclairtechnology.com
Flat tyre inflation
It will be observed that if some of the wheels are not inflating this
will show a ‘0’ (Zero) on the display. Press flat tyre to initialise the
flat tyre inflation pulses.
If all the wheels are flat, the user must press the Flat tyre key on
both axles.
To inflate a number of flat tyres with unused hoses only, the
unused hoses must be disconnected to avoid hose ‘snaking’ from
the discharging high pressure N2.
Note: Always ensure that any replacement hose connectors are of
the “Open end” type
Emergency stopping
Top pause/stop the inflation / deflation cycles press either the + or
- button together. This will display a pause symbol. To re-start
press the + or - button again.
To adjust N
2
purge parameters
Number of Purge Cycles
NPC
Over Pressure Limit
OPS
Lower Pressure Limit
LPL
These can be adjusted if required by the operator by:-
1.
Turn the unit on and off to restart the ‘set up’ process
2.
When you see ‘PCL’ displayed on both top left and top right
controller screens press the + and - buttons simultaneously
3.
Press the + button until you see ‘8’ displayed on the
screens
4.
Enter this by pressing the flat tyre button on both screens
5.
The screen at this stage should display NPC. This is the first
of the four parameter settings. These parameters may be
scrolled up and down to view by pressing the + or -
buttons. The three parameters are fully defined in
(1)
Parameters
.
6.
To access any of the parameters, press flat tyre, this will
open up the parameter contents, adjust values using the
(+/-) buttons and save value chosen by pressing the flat
tyre button.
7.
To exit out of any parameter press the far right button
once, this will return you to the set default press.
(1) Parameters
Definition
PCL standard settings
npc
Number of purge cycles
2
ops
Over pressure setting
0 psig/bar or set pressure
lpl
Lower pressure limit
10 % of target pressure
npc
is adjustable between 1 and 5 cycles = increase cycles to
improve N2 tyre purity. On N6 models ONLY when the desired
inflation pressure is above 60psi/4.1bar you only require 1 purge
as standard to achieve an acceptable purity level while increasing
inflation times.
ops
is adjustable between 0 and 29 psig/2.00 bar = allows the
inflation pressure to go beyond the set pressure by the value
assigned, this may be used to compensate for a reduced number
of N2 cycles .
lpl
is adjustable between 10% to 50% and represents lower limit
for purging. For tyres with higher set pressures the low pressure
threshold can be increased to reduce time, and can be coupled
with an increased number of N2 cycles.
Adjusting tank pressure
tnp is adjustable for the NEX6 only. The NEX6 is factory set at
9bar/130psi. If your max inflation pressure is 8bar/116psi or less
you DON’T need to change the TNP. Always remember that the
Tank Nitrogen pressure (TNP) MUST be at least 1 bar / 14.5psi
higher than the max inflation pressure. For example if you are
inflating to 9bar/130psi your TNP MUST be set at 10bar/145psi. To
achieve the TNP pressure the input pressure (seen on the
regulator on the side of the unit) must be 1 bar higher e.g.
11bar /160psi.
In order to do this you must first remove the
top back plate from the rear of the unit using
an Allen key. You will then see an LCD head
assembly and buttons. Follow the procedure:
1.
Turn the unit off and back on again using the front on/off
switch.
2.
When the unit is running its start up checks you will see
‘PCL’ on the screen, press the far right button within 2
seconds of seeing PCL.
3.
‘L1’ should be visible on the screen. Press the + button until
you see ‘L9’ on the screen.
4.
Press the flat tyre button to enter into it
5.
Press the + button until you can see TNP displayed.
6.
Press flat tyre button to enter into it.
7.
The screen should display 8bar/116psi
8.
If you want to reduce or increase this tank set pressure
simply press the + or - button to reach your target.
9.
Once you have reached your target press the flat tyre
button to save it.
10.
Press the far right button three times to enter out of
parameters and back into the start up process screen.
