L.B. White Pilot - Manual (Page 73)

Leak and Gas Pressure Checks
Servicing
Instructions
C. Leak C Check
1. Check all connections for gas leaks using approved
gas leak detectors. Gas leak testing is performed as
follows:
a. Check all pipe connections, hose connections,
fittings and adapters upstream of the gas control
with approved gas leak detectors. In the event a
gas leak is detected, check the components
involved for cleanliness and proper application of
pipe compound before further tightening.
b. Tighten the gas connections as necessary to stop
the leak.
c. After all connections are checked and any leaks
are stopped, start the heater so the main burner
ignites.
d. Stand clear while the main burner ignites to
prevent injury caused from hidden leaks that could
cause flashback.
e. With the main burner in operation, check all
connections, hose connections, fittings and joints
as well as the gas control valve inlet and outlet
connections with approved gas leak detectors.
f. If a leak is detected, disconnect the heater from its
electrical supply and close the fuel supply valve to
the heater.
g. Check the components involved for cleanliness in
the thread areas and proper application of pipe
compound.
h. Tighten the gas connection as necessary to stop
the leak. If necessary, replace the parts or
components involved if the leak cannot be
stopped. Ensure all gas leaks have been identified
and repaired before proceeding.
Gauge
Adapter
Valve sshown iis ooutside oof hheater ffor cclarity oof vview.
WARNING
Fire aand EExplosion H Hazard
■ Do not use open flame (matches, torches, candles,
etc.) in checking for gas leaks.
■ Use only approved leak detectors.
■ Failure to follow this warning can lead to fires or
explosions.
■ Fires or explosions can lead to property damage,
personal injury or loss of life.
August 1999
8.9-2 2