5-1
Alarm Oxygen Monitor
Maintenance 5
Teledyne Analytical Instruments
Maintenance
Aside from normal cleaning, the Model 3350 should not require any
maintenance beyond replacement of expended Micro-Fuel Cells, and perhaps a
blown fuse. Routine maintenance includes occasional recalibration, as described
in chapter 4,
Operation
.
5.1
Replacing the Fuses
Remove Power to Unit before replacing any fuse.
The Model 3350 has two different configurations: Standard AC Version
and AC with Battery Backup Version. Both configurations have replaceable
fuses. When a fuse blows, check first to determine the cause, then replace the
fuse(s) using the following procedures, depending on which version is used.
5.1.1 Standard AC Version
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 of the control unit in the
O
position. Remove the
control unit 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 control unit, on the
front door. See Figure 5-1.
Figure 5-1: AC Fuse Replacement
FUSE