Bennett 111103, Operation, Service & Parts Manual

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Bennett T140 Operation, Service, & Parts Manual Troubleshooting
13
TO TEST THE VACUUM O F THE PUMP, FOLLOW T HIS PROCEDURE:
1. Remove the pipe plug in the center of the strainer or filter cover. The cover is marked for easy identification.
2. Install the vacuum gauge.
3. Start the pump and open the nozzle to full flow for a true reading.
4. With the nozzle open, a normal vacuum reading is 6-8 inches of mercury for normal suction. See Figure 12 .
TO TEST THE PRESSURE OF THE PUMP, FOLLOW THIS PROCEDURE
Remove the pipe plug in the center of the control valve cover. Covers are marked for easy identification.
1. Remove the pipe plug in the center of the control valve cover. Covers are marked for easy identification.
2. Install the pressure gauge.
3. Start the pump and open the nozzle to full flow for a true reading.
4. With the nozzle open, a normal pressure reading is 16-18 pounds per square inch pressure.
5. With the nozzle closed, a normal pressure reading is over 30 pounds per square inch pressure. See Figure 13 .
The following examples are offered to help you determine the possible cause of a problem by knowing the gauge readings on the inlet (vacuum) and
outlet (pressure) side of the pumping unit.
Note : Actual readings may vary slightly depending upon installation and environmental conditions
Figure 12
Figure 13
Figure 14