Preventive Maintenance
5-1
SIMATIC VPU200–3104 Hardware Manual
Chapter 5
Preventive Maintenance
The VPU200–3104 incorporates a flexible disk storage system which is
capable of storing up to 2.78 megabytes of data. This disk storage system is
a precision piece of equipment that requires particular handling to keep it
functioning properly and to eliminate downtime. Here are a few suggestions
for keeping your VPU in optimum working conditions.
•
Your VPU comes with a diskette installed in the drive to protect the
drive read/write heads during shipping. Always replace this diskette or
another scratch diskette in the drive during periods when the VPU is
not being used.
NOTE:
Do not use a ladder logic program or operating system diskette for
this purpose.
•
Never leave diskettes containing important ladder logic programs or
operating systems in the disk drive for extended periods of time.
Failure to remove important diskettes from the drive may result in loss
of the data on the diskettes.
•
Do not insert or remove a diskette from the disk drive unless the VPU
is plugged into a power outlet and the On/Off switch is On. Failure to
follow this procedure may result in damage to the diskette.
•
Do not leave the VPU in dusty, dirty environments for extended periods
of time with the cover open. Always close the cover and secure both
latches when the VPU is not in use. This will prevent suspended dust
particles from settling into the disk drive.
•
A head-cleaning kit is included with your VPU. Use it only if you
experience any problems with the disk drive or if you are operating the
VPU in a very dusty environment. Dust particles on the read/write
heads can cause a variety of problems, including premature wearout of
diskettes.
•
Always make extra copies of your ladder logic programs and operating
systems. Place the extra copies in a clean jacket and store them in a
cool, dry place away from extreme heat, direct sunlight or magnetic
fields.
Inform all personnel who will be using the device of these maintenance
suggestions so that you can achieve maximum performance from your VPU.
Summary of Contents for SIMATIC VPU200-3104
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