Compac CNG Service Manual page 31

Dispenser Set-up
Pressure Transducer Gain (Fast Fill & Temperature Compensated Units Only)
To adjust the Pressure Transducer
Gain
Target Fill Pressure (Fast Fill & Temperature Compensated Units Only)
To adjust the Target Fill Pressure
Compac Industries Ltd.
The pressure transducer gain (
GAinb2)
is a correction factor used to ensure the pressure transducer is
correctly calibrated. Typical values for the gain are usually close to
0.4000.
GAinA GAinA2
and relate to the gains of pressure transducers one
and two (where fitted) on side A of the dispenser.
GAinb GAinb2
and relate to the gains of pressure transducers one
and two (where fitted) on side B of the dispenser.
The pressure transducer gain is set during the calibration phase and does
not require adjusting during service
1. Make sure that the dispenser is idle, with the nozzle in its holster.
2. Press and release the K-Factor switch until the required gain is
GAinA GAinb
shown ( ,
3. Enter in the new gain.
Each press of the K-Factor switch passes you over a
digit in a setting, making the digit blink. Holding the switch down for
more than a second changes whichever digit is currently displayed. If
you want to pass over a setting without changing any digits, keep
pressing and releasing the switch.
Let the menu time out so that the value and quantity amounts are
displayed.
The target fill pressure (
pressure after filling and temperature compensation. The units of
measure are in bar.
FPA
is the target fill pressure of side A of the dispenser.
FPb
is the target fill pressure of side B of the dispenser.
Do not set the target fill pressure so that it is above the
maximum fill pressure.
1. Make sure that the dispenser is idle, with the nozzle in its holster
2. Press and release the K-Factor switch until the required target fill
pressure is displayed flow rate is displayed. (
3. Enter the new target fill pressure.
Each press of the K-Factor switch passes you over a
digit in a setting, making the digit blink. Holding the switch down for
more than a second changes whichever digit is currently displayed.
If you want to pass over a setting without changing any digits, keep
pressing and releasing the switch.
4. Let the menu time out so that the value and quantity amounts are
displayed.
Page 31
GAinA GAinb GAinA2
, ,
GAinA2 GAinb2
, or
FPA FPb)
and is the final desired vehicle fill
FPA
K-Factor Switch
and
)
FPb
or )
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