Fuel Orifice Inspection - Gentherm 5220 Operating Manual

c) Align the sediment bowl with the regulator body and replace the four screws and
tighten.
Note: While the regulator is removed it is a a convenient time to check the orifice
and clean the air-filter. See Fuel Orifice Inspection, Section 8.2.3 and Air Filter
Cleaning,
d) Installation of the pressure regulator into the TEG is the reverse of removal. With
the fuel pressure on, leak check all regulator joints and fuel connections.
WARNING:

9.2.3 Fuel Orifice Inspection

Follow these steps to inspect the fuel orifice:
a) Shut off the fuel supply to the TEG and allow to cool.
b) Remove the air screen by undoing the 4 mounting screws.
c) Disconnect the flexible fuel line from the safety SOV valve.
d) Disconnect the other end of the flexible fuel line and attached orifice from the
center of the air shutter.
e) Remove the orifice fitting from the flexible fuel line.
f) Visually check the orifice hole. It should be free from any obstructions. Replace
it if necessary. It is recommended a magnifying glass is used to aid with visual
inspection.
g) Connect the orifice fitting to the flexible fuel line then thread the orifice back
through the center of the air shutter. This only needs to be finger tight.
Caution:
h) Connect the free end of the flexible fuel line to safety SOV valve.
i) Leak check all connections using a commercial leak detector.
WARNING:
Gentherm Global Power Technologies
5220
Section 10.1.1.
Check for fuel leaks after any fuel system service.
Always use the same size orifice as was removed.
Propane orifice (#10)
Natural gas orifice (#8)
Check for fuel leaks after any fuel system service.
- Part# 4200-06251
- Part# 4200-00690
28142 Rev. 14
9-5