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.
NOTE: 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.
To perform an electrical operational 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. Turn on the power supply to the dispenser.
The displays and backlighting will illuminate, and the displays read hold.
The dispenser is in a ready state once the hold is finished, and the display
shows 0.00.
3. With the dispenser in a ready state.
Press the Start button.
The display will show 888888 and the solenoids energise, initiating a fill.
On the K factor board check that the output leds T1 T2 and T3 turn on,
indicating a signal is being sent to the triacs to open the solenoid valves.
The diagnostic LED (D9) 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.
4. 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 10 seconds. This is a default time-out setting
in the software for situations when there is no gas flow registered.
5. 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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