Beckett LineGuardian - Manual (Page 6)

8 9
fig. 23
fig. 24
fig. 25
fig. 26
12 Pull the nut and CSST towards the termination fitting (fig. 23),
inserting the bushings into the fitting adapter. Screw the nut
onto the outlet fitting body taking care not to cross threads.
13 Once the nut is hand tight and clearly engaged without cross
threading, use wrenches to tighten the nut until it cannot be
tightened further. A torque of 40 ft-lbs is required.
STEP 8: PURGE THE LINEGUARDIAN
LINE WITH NITROGEN
1 CSST nut at LineGuardian valve should be loose
(do not tighten).
2 Purge line at termination fitting Schrader valve for
approximately 10 seconds.
3 Tighten CSST nut at LineGuardian valve. This completes the
line purge. System is ready for charging.
STEP 9: CHARGE AND TEST SYSTEM
1 Using a compressed nitrogen canister, regulator and a
Schrader valve fill fitting, inflate the system to 20-25 PSIG
using the fill valve on the termination fitting. Verify exact
pressure with a precision pressure tester and replace cap
on fill valve. Do not over pressurize.
2 Wait for one half hour and retest the pressure to ensure that
there are no leaks. If pressure has dropped noticeably, first test
CSST fittings with soap and water and retighten if necessary.
3 Once the system is pressure tight, the tank and line can be
filled with oil normally. Note that there is a manual shut off
valve located on the underside of the LineGuardian valve that
will need to be opened.
Verify the Installation
1 After installing the LG system and charging with nitrogen,
install a vacuum gauge on the fuel pump inlet port or a “T”
fitting installed at the fuel supply line inlet at the pump.
2 Check all external fittings with a soap test.
3 Open the manual valve at the tank and prime the oil burner
fuel pump. If using a single line top feed fuel line, close the
supply valve at the tank until a vacuum of at least 15" hg
shows on the gauge, then open the valve quickly to remove
any air trapped in the fuel line. Repeat this process until all of
the air is removed and close the bleeder valve.
4 Start the oil burner and observe that interstitial pressure
remains stable on the termination fitting pressure gauge.
Vacuum should be zero or close to it if proper syphon effect
has been achieved.
5 With the oil burner running, close the manual valve at the tank.
Open the bleeder valve at the fuel pump until a vacuum of 15
to 25" hg is acquired. Close the bleeder valve and turn the oil
burner off.
6 Pressure and vacuum gauge readings should hold.
7 If there is a drop in pressure only, there is a surveillance gas
(nitrogen) leak in the system.
Leaks of this nature can be from the CSST tubing itself or
the external fittings on the valve or termination fitting. Fitting
leaks can be readily identified by performing a soap test
on all fittings while the system is charged. Any fitting leak
can usually be corrected by simply tightening. If a CSST
connection continues to leak after tightening, remove the
tubing and check the double flare on the tube-end for flaws.
If the flare has been compromised, remove the internal fuel
tubing from the connection, insert a plastic sleeve (tubing
protector) into the CSST and cut the CSST back two inches.
Cut the fuel tubing to the required length and inspect for any
damage (nicks or scratches) on the tubing surface within the
last inch of the tube-end. If tubing surface is smooth, re-install.
8 If there is a drop in pressure and vacuum there is an internal leak.
INTERNAL LEAKS CAN ONLY OCCUR IN THREE LOCATIONS:
i) At the fuel tubing connections: The first place to check
for an internal leak is at the fuel tubing connection. A leak at
the tube connection is normally caused by an improper seal
between the tubing and the connection fitting inside the valve
or termination fitting. Close the fuel valve at the supply tank
and remove and inspect the tube for any damage. The last
inch of tubing must not have any outer surface damage or it
will not properly seal. If this is found to be the case, cut back
the fuel tube and re-install as per previous instructions.
ii) In the fuel tubing: Unless severely damaged before or during
installation inside of the CSST, or if a manufacturer’s defect is
identified, a fuel tubing leak is very rare. If suspected, remove
the tubing from the CSST and replace it.
iii) Inside the valve: A leak inside the LineGuardian valve
or termination fitting would be indicated if you are sure the
fuel tubing is not compromised in any way at the tubing
connections (see above). If this is the case, replace the
valve first. If the leak continues, replace the termination
fitting. If either of these replacements remedy the problem
and if still under warranty, return the defective part to the
place of purchase.
9 If there is a drop in vacuum only, the LineGuardian system is
working correctly. However, there is a leak in the fuel pump or
fittings between the termination fitting and the pump.
Re-tighten all fittings on both the tank and fuel pump to
eliminate the vacuum leak. If this does not resolve the problem
there may be an issue with the fuel pump. Consult the fuel
pump manufacturer’s instructions to troubleshoot the leak.
Annual maintenance
LineGuardian is a safety system designed to respond to even
the smallest of line leaks. LineGuardian should be inspected and
maintained annually to ensure proper operation and performance.
ANNUAL MAINTENANCE OPERATIONS
1 Ensure system is active by checking pressure gauge at
termination fitting. Pressure should be between 18 and 25 PSI.
2 Inspect system to ensure all components are in good working
condition and secure.
3 Discharge the system surveillance gas at the termination fitting
by releasing the nitrogen through the Schrader valve.
4 Once the nitrogen has been released, the automatic feature of
LineGuardian has been activated, and the LineGuardian valve
is now closed. The flow of fuel oil is now stopped.
5 Re-Charge the LineGuardian system with nitrogen to a
minimum of 22 PSI. This step has re-opened the automatic
valve. The flow of fuel oil is now active.
6 Ensure the nitrogen is maintained at a minimum of 22 PSI.
If necessary, perform a “soap” test on connections to ensure
there are no nitrogen (surveillance gas) leaks.
7 Exercise the manual valve by turning OFF and ON three
consecutive times (RED handle on bottom of valve). Ensure
that the manual valve is in good working condition. Ensure
the manual valve is left in the ON position after exercising.
8 This completes the annual maintenance required
for LineGuardian. If you have questions or concerns,
please contact technical support as provided to
you from your distributor.