Teledyne 3300ZB - Low-cost Zirconium Oxide Oxygen Analyzer - Manual (Page 31)

Trace Oxygen Analyzer Maintenance
Teledyne Analytical Instruments 21
Maintenance
Aside from normal cleaning and checking for leaks at the gas
connections, the Model 3300ZB should not require any maintenance
beyond replacement of zirconium oxide sensors, and perhaps a blown
fuse. Routine maintenance includes occasional recalibration, as
described in Chapter 4 Operation.
5.1 Replacing the Fuse
If 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.