Compac CNG Installation And Service Manual

Mechanical Commissioning
Compac Industries Ltd.
Page 16
www.compacngv.com
Mechanical Commissioning
At the mechanical commissioning stage, the loading post should not be
pressurised.
If you find any leaks during commissioning, immediately close
all of the valves and de-gas the post (see page 23).
To perform a mechanical test:
1. Make sure that the outlet shut-off valves are closed. (These are the
valves in the lines at the base of the post, but they are not part of the
post.)
2. Check all post fittings, especially the outlet connections, to make sure
that they are tight.
Always de-gas the lines before tightening any fittings.
Never tighten fittings while they are under pressure.
3. Check that the outlet supply valve is closed and the nozzle valve is
closed.
4. Connect the nozzle to a tank containing CNG.
5. Turn on the post and wait for it to power up.
The loading post initially displays PA:uSE. When it is ready, 0.00 is
displayed.
6. Press the Start button.
If you are commissioning a dual hose loading post, press
the Start button on either side. This opens the loading post's solenoids.
The loading post automatically shuts off after approximately one minute
if no flow is detected.
7. Slowly open the inlet shut-off valves and listen for leaks. If you hear
leakage, shut off the inlets immediately. If the loading post shuts off
during this process, shut off the inlet valves, restart the loading post,
and continue.
8. Once the inlet valves are fully open, allow the loading post to time out
on the 1 minute no-flow timer and shut the solenoid valves, or manually
shut it down and close the solenoid valves by pressing the Stop button.
9. Press the Start button on the loading post.
10. Slowly open the outlet isolation valve on the side of the loading post
and listen for leaks. If you hear leakage, shut the valve immediately.
If the loading post shuts off during this process then shut the outlet
supply valve, restart the loading post, and continue.
11. Repeat steps 8 and 9 for the second hose on a dual hose loading post.
12. Once the outlet isolation valves are fully open, allow the loading post to
time out on the 1 minute no-flow timer and shut the solenoid valves, or
manually shut it down and close the solenoid valves by pressing the
Stop button.
The loading post and hose(s) are now fully pressurised.
13. Use soapy water to check all fittings (including the hose fittings) for
leaks.
Always de-gas the lines before tightening any fittings.
Never tighten fittings while they are under pressure.
14. Complete a few fills on a test cylinder, checking for leaks or unusual
operation.

Compac CNG Specifications

General

Brand	Compac
Model	CNG
Category	Dispenser
Language	English