Taylor-Wharton Auto Fill Laser Pak User Manual

Page 18

Figure 10: Graphic Terminal

TAYLOR-WHARTON

Vessel A

Bulk

Pressure, PSIG

425

410

155

Percent Full

Mode View

Alarm

History

Setting

Adj

Figure 11: Default display screen

Six settings are user adjustable through the Graphic Terminal. The initial settings should be used in most
cases. However, the settings may be adjusted to better suit a particular installation. The Auto-Fill Laser Pak
should not be operated at pressures exceeding 500 psig. It is possible to cause the system to malfunction by
improperly setting these values. However, the system is designed to be inherently safe regardless of the
controller output. An explanation of each of the settings follows:

Pressure Builder Open – The pressure building solenoid valve (V4) will open when the pressure is less than
this setting. The valve will not open if the vessel is in Venting to Bulk or Filling mode. It is not
recommended to set this value above 450 psig.

Pressure Builder Range – If open, the pressure building solenoid valve (V4) will close when the pressure
exceeds this value plus the Pressure Builder Open setting.

Vent to Bulk – When a vessel pressure exceeds this value, the vent to bulk solenoid valve (V2) will open.
This is true for vessels in Stand-By mode or Supply mode. This feature allows gas that would otherwise be
lost through the relief valves to be recovered.

Bulk Pressure High – If the bulk tank pressure exceeds this value the system will not vent back to the bulk
tank.

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