YZ Systems NJEX 7300L, Instructions & Operating Manual, Page: 45 / 126

YZ Systems, Inc. • 3101 Pollok Drive • Conroe, Texas • USA • 77303 • P: 936.788.5593 • F: 936.788.5720
Page 35 NJEX 7300L ver.09042003
SSSSS
ECTION ECTION
ECTION ECTION ECTION
66666::::: P P P P P
R RR
R ROGRAMMING
OGRAMMING
OGRAMMING OGRAMMING OGRAMMING
FOR FOR
FOR FOR FOR
P P P P P
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R ROPOR
OPOR
OPOR OPOR OPORTION
TION
TION TION TIONAL
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IME IME
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PERA PERA
PERA PERA PERATION
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Or
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flashing when it has been loaded into memory, the High
Level value will begin to flash. Use the Up Arrow key to
increase the value and the Down Arrow key to de-
crease the desired value. This alarm should typically be
set at less than 80%. When a new value has been
chosen, press the Enter key to store the new High Level
Alarm setting into memory. Press the Down Arrow key
to advance to the next menu.
Expansion Tank Pressure Monitoring
The expansion tank pressure should typically remain at
approximately 25 psi (1.72 Bar). There are two alarms
that can be triggered a High Pressure Expansion Tank
Alarm, and a Low Pressure Expansion Tank Alarm.
1. Disabled: no expansion tank pressure monitoring,
0 = disabled, Both Low & High settings must be
disabled. Normal operation should have this
function enabled.
2. Enabled: Low Level should typically be set @ 23
psi (1.58 Bar), but is adjustable from 0 psi (0 Bar) up
to the high level set point. High Level should
typically be set @ 27 psi (1.86 Bar), but is adjust-
able from 0 psi (0 Bar) up to 99 psi (6.82 Bar).
To set the alarm level points, figure 62, press and
release the Select key. The Low Pressure value will
begin to flash when chosen. Use the Up Arrow key to
increase the value and the Down Arrow key to decrease
the value. When a new value has been chosen, press
the Enter key to store the new Low Pressure setting into
memory. The entered value will stop flashing when it has
been loaded into memory and the High Pressure value
will begin to flash. Use the Up Arrow key to increase the
value and the Down Arrow key to decrease the value.
When a new value has been chosen, press the Enter key
to store the new High Pressure setting into memory.
Press the Down Arrow key to advance to the next menu.
Odorant Inlet Pressure Monitoring
In order for the fill valve to function correctly a pressure
differential between the Bulk Odorant Storage Tank and
the Expansion Tank, must be maintained. This differen-
tial should never be less than 5 psi (.35 Bar) and
typically not more than 10 psi (.69 Bar). There are two
alarms that can be triggered from the Odorant Inlet
Pressure reading, a High Odorant Inlet Alarm, and a
Low Odorant Inlet Alarm, figure 63.
Figure 62
Select
Enter
Figure 63
Select
Enter
pmp bat vmtr sig tnk
Expansion Tank (bar)
1.40=Low 2.00=High
pmp bat vmtr sig tnk
Expansion Tank (psi)
20.0=Low 30.0=High
pmp bat vmtr sig tnk
Odorant Inlet (bar)
1.70=Low 2.80=High
pmp bat vmtr sig tnk
Odorant Inlet (psi)
25.0=Low 40.0=High