Teledyne 3190 Maintenance

5-1

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.

5.1.1 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