Replacing The Fuse - Teledyne 3300PA Operating Instructions Manual

Percent Oxygen Analyzer
Overvoltage
the Model 3300PA should not require any maintenance beyond replacement of
Category II
expended Micro-Fuel Cells, and perhaps a blown fuse. Routine maintenance
includes occasional recalibration, as described in chapter 4, Operation.
fuse using the following procedure:
Maintenance
Aside from normal cleaning and checking for leaks at the gas connections,
5.1

Replacing the Fuse

Remove Power to Unit before replacing the fuse.
When a fuse blows, check first to determine the cause, then replace the
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
Teledyne Analytical Instruments
Maintenance 5
Fuse
5-1