This procedure outlines how to perform an electrical operational test
before carrying out full mechanical commissioning, making sure that the
dispenser is functioning correctly. Check for any damage that may have
occurred in transit. Check all terminals, plugs, and chips to make sure
that they are securely in place.
Damage to electronics occurs most commonly from
vibration and jarring.
Before beginning this test, check that no gas pressure has been applied
to the dispenser inlets. The factory set-up information should be
programmed into the dispenser but all K-factor and Parameter switch
settings should be checked and confirmed before commissioning tests
are carried out.
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. Turn on the power supply to the dispenser.
The displays and backlighting will illuminate, and the displays read
PA:uS:E, then count down for one minute.
The dispenser is in a ready state once the countdown is finished
and the display shows 0.00.
3. With the dispenser in a ready state, check that the C4000
Microprocessor Power LED (D1) is turned on
If the dispenser is receiving information, Comms RXD
LED (D6) will poll. If the dispenser responds to polls for its
respective pump number/s, Comms TXD LED (D7) will also poll.
Diagnostic LED (D18) slowly flashing. (If the dispenser is
connected to an operational Controller, it flashes slowly but
erratically. If the dispenser is not connected to a Controller, it
flashes slowly and consistently.)
Watchdog LED (D5) is turned off
4. Press the Start button.
The display will show 888888 and the solenoids energise, initiating
a fill. Check that Diodes D8, D10 and D11 turn on, indicating a
signal is being sent to the triacs to open the solenoid valves.
The diagnostic LED (D18) flashes quickly when the start button is
pushed or the nozzle removed from the holster to initiate a fill. When
the button is released or nozzle returned to the holster it will return
to the normal state and flash slowly.
5. Verify solenoid operation by listening for a click, or by using a
screwdriver tip or some other metallic tool to check for a magnetic
field present on the solenoid coils.
The solenoids will switch off after one minute. This is a default time-
out setting in the software for situations when there is no gas flow
registered.
6. Press the Stop button. The solenoids switch off and the fill ends.
When you release the Stop button, the dispenser resets and returns
to a ready state.
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