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Trace Oxygen Analyzer Maintenance 5
Teledyne Analytical Instruments
Maintenance
Aside from normal cleaning and checking for leaks, the Model 3190
should not require any maintenance beyond replacement of expended Micro-
Fuel Cells, and perhaps a blown fuse. Routine maintenance includes occa-
sional recalibration, as described in chapter 4, Operation.
5.1 Replacing the Fuse
5.1.1 AC Powered Units
When a fuse blows, check first to determine the cause, then replace the
fuse using the following procedure:
1. Disconnect the AC power and place the power switch located on
the rear panel in the O position. Remove the power cord from the
receptacle.
2. The fuse receptacle is located in the power cord receptacle
assembly in the upper left-hand corner of the rear panel. See
Figure 5-1.
Figure 5-1: AC Fuse Replacement
3. Insert a small flat-blade screwdriver into the slot in the receptacle
wall nearest the fuse and gently pry open the fuse receptacle. The
fuse holder will slide out. The fuse in use is visible in the clip. To
Overvoltage
Category II