Compressed Natural Gas (Cng) Fuel Module - HEIL DuraPack 5000 2017 Operation Manual

COMPRESSED NATURAL GAS (CNG) FUEL
MODULE
The images on the following pages show a typical CNG
system configuration. Your CNG system configuration may
vary.
A. Fuel Module Functions
The CNG fuel tanks contain CNG at a pressure of 3,600
psi in USA, (3,000 psi in Canada). The CNG Fuel
Module serves multiple functions within a natural gas
vehicle (NGV) fuel system.
These functions include:
Storage tank refueling
Storage tank pressure measurement
Manual and ignition controlled fuel shut-off
Pressure reduction from storage tanks to engine
supply
Fuel system filtration
Liquid removal from fuel system
Issued September 2017
Compressed Natural Gas (CNG) Option
®
DuraPack 5000
B. Fuel Module Components
1. High Pressure Gauge
The high pressure gauge, located in the front panel
of the fuel control module, indicates the pressure of
the CNG being supplied to the regulator. If the
manual shut-off valve is turned to 'on' and all other
valves are open between the fuel tank and the fuel
control module, this gauge reflects fuel tank
pressure.
2. Low Pressure Gauge
Located below the high pressure gauge in the front
panel of the fuel control module, the low pressure
gauge indicates the pressure of the CNG leaving the
regulator and supplying the vehicle's engine. A typical
reading for this gauge is 100-120 psi, dependent
upon regulator setting.
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Copyright 2017, Heil Environmental
Printed in U.S.A.