YZ Systems NJEX 7300L, Instructions & Operating Manual, Page: 31 / 126

YZ Systems, Inc. • 3101 Pollok Drive • Conroe, Texas • USA • 77303 • P: 936.788.5593 • F: 936.788.5720
Page 21 NJEX 7300L ver.09042003
SSSSS
ECTION ECTION ECTION ECTION ECTION
4: 4:
4: 4:
4: S S
S S
S
Y YY Y YSTEM STEM STEM STEM STEM
C C
C C
C
ONTR ONTR ONTR ONTR ONTROL OL OL OL OL
& E & E
& E & E
& E
LECTR LECTR LECTR LECTR LECTRONICS ONICS ONICS ONICS ONICS
Test & Standby Keys
The Test key, figure 30, is located in the upper right
quadrant of the N-300 touch pad and is used to
manually stroke the pump. Simply press the test key
touch pad to stroke the pump. Each time the test key is
pushed, the pump should actuate and the N-300
display will show Strk just above the Test key touch
pad. The strokes signaled counter, located in the display
section of the N-300 will advance for each stroke of the
pump. The odorant injected counter, located in the
display section of the N-300 will also advance when the
pump displaces a sufficient volume of odorant to register
.001 lb (.001 kg) of odorant.
The Standby key, figure 31, allows the operator to
locally inhibit the operation of the N-300 controller,
by simply pressing this key. This creates a standby
mode for the 7300L system. In the event of a no
flow condition in the pipeline, the operator can
switch the 7300L to a standby mode for extended
periods of time, or to temporarily suspend operation
of the system for maintenance. When flow is
initiated once more, or the maintenance has been
completed, the 7300L can be switched from standby
to operation without the need to restart the N-300
controller, by simply pressing the standby key once
again.
Remote Inhibit Mode, can also be applied to interrupt
odorization in a manner similar to the standby mode;
however, it is initiated by applying a dry contact, or open
collector signal, to the termination board TB1,
terminals #9 and #10 ,
refer to the Wiring Control
Document on page 116 in Appendix D . The Remote
Inhibit Mode’s function is identical to the Standby
Mode. Activation will be indicated on the N-300
display and the Sentry4 event file differently. Rmt
Inhb will appear on the N-300 main screen display
where the count down time normally appears, figure 31.
Figure 30
Figure 31
pmp bat vmtr sig tnk
PropFlow Rmt Inhb
*Stop *Dsp *Set
pmp bat vmtr sig tnk
PropFlow 0:00
*Stop *Dsp *Set