YZ Systems Milton Roy • 201 Ivyland Road • Ivyland, Pennsylvania • USA • 18974 • P: 281.362.6500 • www.yzsystems.com
Page 87
NJEX EUR ver. 08-2021
Section 13: NJEX System Troubleshooting
•
XTank High
alarm indicates the pressure in the
expansion tank has exceeded the defined high pres-
sure set point for the Expansion Tank.
Non-Alarm Verometer Indicators
•
Overfill
is indicated when the Verometer has filled
to a level of 112% or greater.
•
Fillrate
alarm is indicated when the Verometer fills
to 112% or greater in less than 10 seconds.
Verometer Troubleshooting Steps
1. Verify the following operating conditions, and cor-
rect as necessary:
a. Expansion tank pressure is set at
1.72 Bar
.
b. Bulk odorant storage tank pressure is at least
0
.34 Bar
and not more than
0.69 Bar
, above
expansion tank pressure.
c. Actuation supply pressure is maintained dur-
ing operation at
5.17 Bar
.
d. Verify that the bulk odorant storage tank has
odorant and all valves are in the correct posi-
tions to allow the verometer to fill.
2.
Important:
Check and adjust the throttling valve
position for effect on filling prior to proceeding to
troubleshooting.
Restart the NJEX System to inspect the verometer for a
fill. If no fill occurs, observe if a
No Fill
alarm is indicated
under the Verometer display sequence and trouble-
shoot accordingly.
Verometer Cable Alarm
Troubleshooting Steps
When an active
VMTR-Cable
alarm is indicated the
following steps should be taken:
1. Inspect all cables for any external damage such
as cuts or crimps in the external cable sleeve or
moisture inside the cable connector.
2. Loosen and inspect the cable orientation pins
for correct positioning. All cables have a specific
mating connection to ensure that the correct pins
on the opposing sides of the connector align.
These pins must be correctly aligned to ensure
the electronic signals reach the correct electronic
address in the microprocessor.
3. Reconnect cables as noted above, ensuring that
the alignment pins are mated correctly and that
locking rings are tight. Observe if the alarm is still
active, if it is, contact YZ Technical Services.
Verometer No-Fill Alarm
Troubleshooting Steps
When an active
No-Fill
alarm is indicated the follow-
ing steps should be taken:
IMPORTANT NOTE:
Before attempting to troubleshoot the fill valve, verify
that the status switch is in the run position and the
Verometer is not in a full level position. The fill valve
commands can not be processed if the Verometer is
full, or the status switch is in the standby position.
1. Check actuation gas supply filter and valves for
possible restriction or closure, and adjust or re-
place as necessary.
2. Check odorant filters for possible restriction and
replace as necessary.
3. Check tubing between bulk odorant storage tank
and enclosure for damage. If tubing is crimped,
bent or damaged by any form that could restrict
flow, replace the tubing.
4. Test for adequate fill valve pneumatic actuation
pressure. Place a guage at the tubing connection
located on top of the fill valve by disconnecting
tubing. During a fill, the valve actuation pressure
should be
5.17 Bar
.
Summary of Contents for NJEX 6300G
Page 1: ...NJEX 6300G 7300G N A T U R A L G A S O D O R I Z A T I O N S Y S T E M...
Page 2: ......
Page 3: ...NJEX 6300G 7300G Instruction Operating Manual Version 08 2021...
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Page 10: ......
