StorageTek SL8500, User Manual

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Cleaning Procedures and Equipment
Controlling Contaminants H-9
Cleaning solutions used within the data center must not pose a threat to the hardware.
Solutions that could potentially damage hardware include products that are:
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Ammoniated
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Chlorine-based
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Phosphate-based
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Bleach enriched
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Petro-chemical based
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Floor strippers or re-conditioners.
It is also important that the recommended concentrations are used, as even an
appropriate agent in an inappropriate concentration can be potentially damaging. The
solution should be maintained in good condition throughout the project, and excessive
applications should be avoided.
Quarterly Tasks
The quarterly statement of work involves a much more detailed and comprehensive
decontamination schedule and should only be conducted by experienced computer
room contamination-control professionals. These actions should be performed three to
four times per year, based on the levels of activity and contamination present. All
room surfaces should be thoroughly decontaminated including cupboards, ledges,
racks, shelves and support equipment. High ledges and light fixtures and generally
accessible areas should be treated or vacuumed as appropriate. Vertical surfaces
including windows, glass partitions, doors, etc. should be thoroughly treated. Special
dust cloths that are impregnated with a particle absorbent material are to be used in
the surface decontamination process. Do not use generic dust rags or fabric cloths to
perform these activities. Do not use any chemicals, waxes or solvents during these
activities.
Settled contamination should be removed from all exterior hardware surfaces
including horizontal and vertical surfaces. The unit's air inlet and outlet grilles should
be treated as well. Do not wipe the unit's control surfaces as these areas can be
decontaminated by the use of lightly compressed air. Special care should also be taken
when cleaning keyboards and life-safety controls. Specially treated dust wipes should
be used to treat all hardware surfaces. Monitors should be treated with optical
cleansers and static-free cloths. No Electro-Static Discharge (ESD) dissipative
chemicals should be used on the computer hardware, since these agents are caustic
and harmful to most sensitive hardware. The computer hardware is sufficiently
designed to permit electrostatic dissipation thus no further treatments are required.
After all of the hardware and room surfaces have been thoroughly decontaminated,
the access floor should be HEPA vacuumed and damp mopped as detailed in the
Weekly Actions.
Biennial Tasks
The subfloor void should be decontaminated every 18 months to 24 months based on
the conditions of the plenum surfaces and the degree of contaminant accumulation.
Over the course of the year, the subfloor void undergoes a considerable amount of
activity that creates new contamination accumulations. Although the weekly above
floor cleaning activities will greatly reduce the subfloor dust accumulations, a certain
amount of surface dirt will migrate into the subfloor void. It is important to maintain
the subfloor to a high degree of cleanliness since this area acts as the hardware's
supply air plenum. It is best to perform the subfloor decontamination treatment in a