Mechanical Commissioning - Compac CNG Service Manual

Mechanical Commissioning

Compac Industries Ltd.
At the mechanical commissioning stage, the dispenser should not be
pressurised.
If you find any leaks during commissioning, immediately close
all of the valves and de-gas the dispenser (see page 40).
To perform a mechanical test:
1. Make sure that the inlet shut-off valves are closed. (These are the
valves in the inlet lines at the base of the dispenser, but they are not
part of the dispenser.)
2. Check all dispenser fittings, especially the inlet 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 to hose 1 on the side of the
dispenser (or hose 2 if you are working on side 2) is closed and the
nozzle valve is closed.
4. Turn on the dispenser and wait for it to power up.
The dispenser initially displays
displayed.
5. Press the Start button.
If you are commissioning a dual hose dispenser, press
the Start button on either side. This opens the dispenser's solenoids.
The dispenser automatically shuts off after approximately one minute if
no flow is detected.
6. Slowly open the inlet shut-off valves and listen for leaks. If you hear
leakage, shut off the inlets immediately. If the dispenser shuts off
during this process, shut off the inlet valves, restart the dispenser, and
continue.
7. Once the inlet valves are fully open, allow the dispenser 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.
8. Press the Start button on the dispenser.
If you are commissioning a dual hose dispenser, only
press the Start button for one of the hoses.
9. Slowly open the outlet isolation valve on the side of the dispenser and
listen for leaks. If you hear leakage, shut the valve immediately.
If the dispenser shuts off during this process then shut the outlet supply
valve, restart the dispenser, and continue.
10. Repeat steps 8 and 9 for the second hose on a dual hose dispenser.
11. Once the outlet isolation valves are fully open, allow the dispenser 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 dispenser and hose(s) are now fully pressurised.
12. 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.
13. Complete a few fills on a test cylinder, checking for leaks or unusual
operation.
Page 18
Mechanical Commissioning
PA:uSE.
When it is ready,
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