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2. Routine Maintenance
The system is based on solid state circuitry that requires little routine
maintenance. However, its efficient operation does depend on the periodic
cleaning or replacement of the air filter in each cabinet and the tape heads of
the cartridge tape units. Both tasks can be performed with the system fully
operational.
Servicing the Air Intake Filter
TOOLS and MATERIALS:
1
1
The DNC cabinets must be vacuumed to prevent the buildup of electrostatic
discharges caused by dust. Use a vacuum cleaner with an induction-wound
(brushless) motor, and with plastic or rubber attachments. (Series-wound
motors cause electromagnetic interference.) Battery operated vacuum cleaners
can suffice for small applications or areas without power. Vacuum inside or
around the DNC cabinets each time the frames' filters are inspected, until an
appropriate vacuuming schedule is determined. Do not bump any part of the
vacuum cleaner against equipment, and especially avoid metal to metal
contact.
The air intake filter at the bottom of each cabinet should be cleaned once a
month in ordinary office environments. Inspect the filters on new systems
more frequently to determine the filter cleaning interval appropriate for your
system. Typically, only damaged filters need replacing.
To access the filter, proceed as follows:
(1)
(2)
(3)
vacuum (brushless motor), - or
replacement air filter (part number PO642355) for each DNC cabinet
Open the front door of the cabinet. An air grill is located at the bottom of
the cabinet as shown in Fig. 2-1.
Grasp the two tabs at the top of the air grill and pull the top of the grill
outward (the grill is hinged at the bottom).
The filter lies just beneath the cabinet door. Pull the filter out of the
cabinet.
5
Practice 450-1011-501
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