Parker
Hannifin
Troubleshooting
When a system does not function as expected, the first thing to do is
identify and isolate the problem. When this is accomplished, steps
may be taken toward resolution.
Problem Isolation
The first step is to isolate each system component and ensure that
each component functions properly when it is run independently.
This may require dismantling the system and putting it back together
piece by piece to detect the problem. If additional units are
available, it may be helpful to exchange them with the system’s
existing components to help identify the source of the problem.
Determine if the problem is mechanical, electrical, or software
related, and note whether it can be recreated or is repeatable.
Random events may appear to be related, but they are not
necessarily contributing factors to the problem.
There may be more than one problem. Isolate and solve one
problem at a time.
Information Collection
Document all testing and problem isolation procedures. If the
problem is particularly difficult to isolate, be sure to note all
occurrences of the problem along with as much specific information
as possible. These notes may come in handy later, and will also help
prevent duplication of testing efforts.
Once the problem is isolated, refer to Table 1,
Common Problems
and Their Solutions
. If instructed to contact Parker Technical
Assistance, please refer to
Technical Assistance
for contact
information.
Troubleshooting 149
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