To run the system in normal run mode:
1. Connect power to the system.
2. Open the nitrogen generator’s 3-way outlet ball valve
to nitrogen-out position.
3. On the nitrogen tank, open the gas inlet valve.
4. Push the On/Off toggle button on the upper right con-
trol panel to the “On” position (up) and the system will au-
tomatically turn on and start filling the storage tank with
nitrogen.
To stop the system:
1. Switch the nitrogen generator’s 3-way outlet ball valve
to the bypass position.
2. System will automatically stop once it reaches the cut-
out pressure of approximately 65-75 PSIG.
3. In the case of an emergency shut off, push the On/Off
toggle button on the upper left control panel to the “Off”
position. The unit will shut down immediately.
Alarm Mode
When an alarm mode is activated, it will trigger the
audible buzzer, alarm contact, and flash the cause of the
alarm on the screen. The customer alarm contact wiring
can be viewed on the supplied wiring diagram. The cus-
tomer alarm dry contact is constantly energized and will
constantly illuminate the LED indicator on top of the con-
tact. This is so when there is no power or power is lost on
the system, the contact will de-energize and show a fault
condition. The alarm contact has a max rating of 6A at
250VAC and 2A at 24VDC.
Bypass Mode (BPASS)
During the 30-minute fire protection piping system fill
test or an issue with the generator is detected, the opera-
tor can switch the system into manual bypass mode by
turning the handle on the 3-way ball valve to the bypass
position. With the handle in the “Bypass Mode”, the by-
pass alarm triggers the audible buzzer, alarm contact, and
flashes “BPASS” on the controller’s 7-segment display.
The alarm will turn off once the handle is back to normal
run position.
BLASTOFF® Alarm Mode (B-Off)
The nitrogen generator activates a BlastOff® Alarm
when it detects potential leaks or nitrogen being over-
drawn. The BlastOff® Alarm will trigger the audible buzz-
er, alarm contact, and flash “B-OFF” on the controller’s
7-segment display. Inspect and test the system for leaks
and component failures. Power cycle the unit to reset the
alarm but avoid doing this without finding the cause, as it
will shorten the generator’s life. Contact South-Tek System
or the local installer for further troubleshooting.
Low System Pressure Alarm Mode (Lo-n2)
The low system pressure alarm activates when a sys-
tem pressure is detected below the normal functioning
limits of the nitrogen generator. This may be from an is-
sue with the generator, a supply valve being shut off, or
caused by a large leak in the fire protection system.
Power Loss Alarm Mode (-----)
The Power Loss alarm activates when the nitrogen
generator loses power for any reason. This will cause the
alarm contact to trigger.
Filter Replacement Alarm Mode (FILTr)
Once the generator has been running for 1000 hours
or more, the filter replacement alarm will activate. Re
-
place the filters according to Section 9 Maintenance. Af
-
ter replacing the filter elements, press and hold the Filter
Change Reset Button for 7 seconds. An audible beep will
confirm that the time is reset, and filter alarm will shut off
if it is active. (Note: resetting this will also trigger the Cus-
tomer Alarm Relay for one second)
Start-up Procedures
Use caution when working with pressurized gas. Al-
ways leak check every line before using the system. Note:
Line leaks will cause the N2-Blast
®
FPS-900-RS to run
excessively, shortening its life and possibly causing exces-
sive wear on the compressor.
1. Visually inspect the unit to ensure no damage oc-
curred during shipping and handling.
2. Check the power connection is correct.
3. Turn the 3-way ball valve on the system output to the
“Bypass” position.
4. Open the inlet ball valve on the nitrogen storage tank
if it is closed.
5. Push the power button on the top left of the cabinet to
the “On” position (up). The air compressor will power
on if the storage tank is under pressurized. If neither
the compressor nor PLC display power on, check the
wiring and supply power to the generator.
6. Once the system is running, the pressure gauge will
increase to 65-70 PSIG within 30 minutes or less.
While it is running, check the system for leaks to en-
sure proper functionality.
a. Once it reaches 65-70 PSIG, the system will
enter “Standby” mode and automatically shut off
the internal air compressor. Check the controller
on the control panel for the “StdbY” display.
b. Once in standby, note the pressure reading on
the tank pressure gauge. Monitor the pressure
for the next 5 minutes for any loss in pressure. If
there is a pressure drop, check for leaks around
connection fittings, otherwise proceed to the next
step.
7. Switch the 3-way ball valve on the system output to
the “Nitrogen Out” position and the system will turn on
and fill the storage tank with nitrogen.
8.
Completely fill the storage tank and allow the nitrogen
generator to go into standby mode.
9. Once in standby mode, monitor the tank pressure
gauge for 5 minutes and ensure no significant leaks
are in the sprinkler system.
23.
Summary of Contents for N2-Blast DDX
Page 3: ...Fig 1 3 ...
Page 8: ...Fig 2 8 ...
Page 9: ...Fig 3 9 ...
Page 10: ...10 Fig 4 ...
Page 11: ...11 Fig 5 ...
Page 12: ...Fig 6 12 ...
Page 13: ...13 Fig 7 ...
Page 14: ...Fig 8 Wiring Diagram 14 ...
Page 15: ...15 Fig 9 Wiring Diagram ...
Page 25: ...Fig 10 Nitrogen Generator Filter Locations 25 ...
