User`s guide

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From: Scott G
017- My System Saver IIgs has gotten really noisy. How
can I fix it?
It may be that the fan inside the unit is showing wear. The good news is
that replacing the fan is an easy and rewarding task.
I knew my fan was starting to die when it sounded like it was wheezing
during spin-up. The fan, a Sprite model SU2C7, uses sleave bearings, whose
lifespan is determined by the lubricating oil supply in the bearings. When
enough of the oil evaporates, metal will grind against metal resulting in heat
and resistance that cause the fan to quickly lock-up. Better quality fans use
ball-bearings, but Kensington apparently used the cheapest component available.
Even among the models with sleave bearings, t
he SU2C7 is the least capable. It can only move 18 cubic feet of air a minute
(half what a typical PC fan moves) and has a 55,000 hour rating.
In looking for a replacement for my dying fan, I chose to use a better
model. The Sprite model SU2B1 has the same dimensions as the SU2C7 used in the
System Saver and is readily available from Digi-Key corporation. It uses ball
bearings for long life (the fan is rated for 73,000 hours) and can move 34 cubic
feet of air a minute. The higher quality is readily apparent: the replacement
is currently noticeably quieter than the original even though it is moving more
air per minute.
To replace the System Saver fan, first make sure the System Saver AC power
cord is unplugged. Next, you will need to open the case.
Opening the System Saver case involves removing eight screws. You can
remove the foam weatherstriping along the periphery of the case to expose the
screws OR you can poke through/around the foam at each screw hole. The screw
access holes are arranged as shown in the following diagram (bottom view of the
System Saver):