Filter
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Calibration and Verification
Cleaning the Air Filter
3
3-5
3-3. Cleaning the Air Filter
Caution
Damage caused by overheating may occur if the area around
the fan is restricted, the intake air is too warm, or the air filter
becomes clogged.
The air filter must be removed and cleaned at least 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 3-2 and proceed as follows:
1. Disconnect line power.
2. Remove the filter by unscrewing the knurled screw at the top of the air filter pulling
the filter’s retainer downwards (it hinges at the bottom) and removing the filter
element.
3. Clean the filter by washing it in soapy water. Rinse and dry it thoroughly before
reinstalling.
4. Reinstall the filter and the knurled screw.
CHASSIS
GROUND
S2 S3 S4
FUSE -F1
!
F7-2.EPS
Figure 3-2. Accessing the Air Filter