SECTION 6: TROUBLESHOOTING
YZ Systems Milton Roy • 201 Ivyland Road • Ivyland, PA • USA • 18974 • P: 281.362.6500 • www.yzsystems.com
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NJEX ZEO Version 04/13/2021
bypassing. The knocking noise will no longer be heard with the pump stroke. After
bypassing discontinues, adjust the screw one additional full turn clockwise to provide
a buffer zone for the discharge line pressure.
5. Inspect all check valves within the manifold and pump head to ensure they are properly
installed. To remove the check valves, properly purge and vent the system. If any damage
is seen on any check valves, replace and prime and restart system and check if injection
rate alarm reoccurs.
Controller Alarms
There are four controller alarms that monitor the communication of the controller to the Intrinsically
Safe Transition Circuit Board (ISTB) located within the explosion proof or flame proof enclosure
in the lower cabinet.
-
IS Transition Board Cable
will enable if the N-400 Controller has lost connection with the
ISTB.
-
IS Transition Board Sync
will enable if the N-400 Controller is unable to sync with the
ISTB.
-
HW Error 1
will enable if the N-400 controller is unable to write to its internal memory.
-
HW Error 2
will enable if the N-400 real time clock has failed.
IS Transition Board Cable Troubleshooting Steps
When an active
IS Transition Board
alarm is indicated, the following steps should be taken:
1. Verify the wiring is properly connected within the N-400 controller. Please refer to the
Wiring Control Document located in Appendix B
2. If the alarm persists, inspect wiring that runs from the controller to the explosion proof or
flame proof enclosure located in the lower compartment for signs of damage. Replace as
necessary.
3. If the alarm continues, please contact YZ Technical Services for additional support.
IS Transition Board Sync Troubleshooting Steps
When an active
IS Board Sync
alarm is indicated, the following steps should be taken:
1.
Verify the wiring is properly connected within the N-400 controller. Please refer to the
Wiring Control Document located in Appendix B
2.
If the alarm persists, inspect wiring that runs from the controller to the explosion proof or
flame proof enclosure located in the lower compartment for signs of damage. Replace
as necessary.
3.
If the alarm continues, please contact YZ Technical Services for additional support.
HW Error 1 Troubleshooting Steps
When an active
HW Error 1
or
HW Error 2
is active, please contact YZ Technical Services for
support.
