6-4
ROUTINE MAINTENANCE
Routine maintenance that can be performed by the operator consists of
cleaning the fan filter, cleaning the data display, and replacing a defec-
tive line fuse.
Cleaning the
Fan Filter
The sweep generator must always receive adequate
ventilation. A blocked fan filter can cause the instru-
ment to overheat and shut down. Check and clean
the rear panel fan honeycomb filter periodically.
Clean the fan honeycomb filter more frequently in
dusty environments. Clean the filter as follows:
Step 1
Remove the filter guard from the rear
panel by pulling out on the four panel fas-
teners holding them in place (Figure 6-1).
Step 2
Vacuum the honeycomb filter to clean it.
Step 3
Install the filter guard back on the rear
panel.
Step 4
Press in on the panel fasteners to secure
the filter guard to the rear panel.
Cleaning the
Data Display
The data display of the sweep generator is protected
by a plastic display filter. To clean the display filter,
use mild soap or detergent and water, or a commer-
cial window cleaner. When cleaning use a soft, lint-
free cloth. Do not use abrasive cleaners, tissues, or
paper towels which can scratch the plastic surface.
OPERATOR
ROUTINE
MAINTENANCE
MAINTENANCE
Panel
Fastener (4)
Filter
Guard
Figure 6-1.
Removing/Replacing the Fan Filter
681XXB OM
6-13
Changed: November 1995
