Gasboy Gilbarco Global Pumping Unit Operation Manual Uživatelský manuál stáhnout pdf (Strana 29)

MDE-4447A Global Pumping Unit Operation and Service Manual · May 2008 Page 25

Troubleshooting Using Gauge Readings Troubleshooting

Figure 5-5: Gauge Troubleshooting 2

At Control Valve

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At Strainer (or Filter)

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At Control Valve

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At Strainer (or Filter)

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At Control Valve

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At Strainer (or Filter)

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Symptoms: No Flow; Nozzle Open

Probable Causes:

• Seized Meter

• Jammed Computer or Geared

Box

• Completely Restricted Nozzle or

Hose

Symptoms: Slow or No Flow; Pump

Laboring; Nozzle Open

Check Inlet Side

Probable Causes:

• Supply Line Restriction

• Stuck Foot Valve (in Tank)

• Angle Check Valve or Vertical

Check Valve

• Restricted Tank Vent

Symptoms: Slow or No Flow;

Nozzle Open

Check Outlet Side

Probable Causes:

• Control Valve not Opening Fully

• Pump Vapor Locked

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Gasboy Gilbarco Global Pumping Unit Operation Manual Uživatelský manuál Strana 29