3. INSTALLATION AND SETUP
©2014 Kraus Global Ltd.
24
Retail CNG Dispenser Manual
3.4.2 Pressurizing the dispenser
The following steps are guidelines for pressurizing the dispenser;
the dispenser must be powered-on for this procedure. Please be sure
to read and understand
Chapter 2—Safety
before proceeding.
ADVICE
To ensure peak performance, all Kraus CNG dispensers should be leak-
tested before initial operation. The first leak test should be done while
initially pressurizing the dispenser.
ATTENTION
If your dispenser operates over a cascade storage system, complete the
following procedure with the low-bank first, the mid-bank second, and the
high-bank last.
1.
Turn the manual shut-off valve(s), located along the side(s) of
the dispenser to the
ON
position.
2.
Flip the authorization handles to the
ON
position. This enables
you to see the pressure reading on the Secondary Display.
3.
Slowly open the inlet valve and allow 100 psi of gas to fill the
dispenser.
NOTE: Pressure may be monitored through the digital pressure
gauge on the Secondary Display or the mechanical gauge attached to
the sensor vent manifold.
4.
Close the inlet valve and flip the authorization handle to the
OFF
position once the pressure gauge indicates 100 psi.
5.
Apply a leak detector to all fitting connections—we recommend
using Snoop® Liquid Detector.
NOTE: If any leaks are detected, please refer to
Section 4.2—
Maintenance
for leak repair procedures.
6.
If no leaks are found, reauthorize the dispenser by flipping the
authorization handles up to the
ON
position.
7.
Slowly reopen the valve to allow 500 psi of gas to fill the
dispenser.
8.
Close the valve once the pressure gauge indicates 500 psi.
9.
Reapply the leak detector. See the previous
Note
if leaks are
detected.
10.
Repeat this process at 500 psi increments until the regular
operating pressure is reached. Repeat the process for each inlet
valve.