Calibrator
How to Clean the Air Filter
25
Table 6. Rear-Panel Features (cont.)
G
XW Warning
To avoid shock hazard, connect the factory supplied
three-conductor line power cord to a properly grounded
power outlet. Do not use a two-conductor adapter or
extension cord; this will break the protective ground
connection.
If there is any question about the effectiveness of
instrument earth grounding through the line power cord
ground wire, use the rear-panel AUX EARTH GROUND
terminal for a protective grounding wire.
The AUX EARTH GROUND terminal is internally grounded to the chassis. If the 5080A is the
location of the ground reference point in a system, this binding post can be used for connecting
other instruments to earth ground. Refer to “Connecting the Calibrator to a UUT” in Chapter 4 of
the 5080A Operators Manual for details.
H
The AC Power Input Module provides a grounded three-prong connector that accepts the line
power cord, a switch mechanism to select the operating line voltage, and a line power fuse. See
“Preparing for Operation” in Chapter 2 of the 5080A Operators Manual for information on selecting
the operating line voltage, and fuse rating and replacement information.
How to Clean the Air Filter
W Warning
To avoid risk of injury, never operate or power the 5080A
calibrator without the fan filter in place.
W Caution
Damage caused by overheating may occur if the area around
the fan is restricted, the intake air is too warm, or the filter
becomes clogged.
The air filter must be removed and cleaned every 30 days, or more frequently if the
calibrator is operated in a dusty environment. The air filter is accessible from the rear
panel of the calibrator.
To clean the air filter, refer to Figure 6 and proceed as follows:
1. Turn off the power, let the fan come to rest, and unplug the ac line cord.
2. Remove the filter element.
a. Grasp the top and bottom of the air filter frame.
b. Squeeze the edges of the frame towards each other to disengage the filter tabs
from the slots in the Calibrator.
c. Pull the filter frame straight out from the Calibrator.
3. Clean the filter element,
a. Wash the filter element in soapy water.
b. Rinse the filter element thoroughly.
c. Shake out the excess water, then allow the filter element to dry thoroughly before
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