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 -18-
TROUBLE
SHOOTING
With a thorough understanding of the operating principles,
a technician should be capable of effectively localizing trouble
by using the built-in self checking features of the equipment plus
the schematic and other data included in the manual.
To minimize the possibility of causing further damage to a
hydraulic test stand reported to be defective, a careful visual
inspection of the equipment should be made prior to applying
power.
If possible, obtain information from the equipment
operator regarding performance at the time trouble occured.
Failure of the equipment may be caused by burned out fuses, worn
or broken cords or connectors or broken wires.
Faults such as
burned out resistors, arcing or shorted transformers often can be
located by sight, smell and hearing.
Intermittent conditions can
often be made to appear by lightly tapping or jarring the equipment.
Loose wiring connections or faulty components can also often be
located by moving them with an insulated tool.
Hydraulic leaks
which could cause pressure and flow problems can be visually
detected.
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