User guide

Maintenance Model 2120XL
Teledyne Analytical Instruments 66
Table 5-1 summarizes the recommended routine maintenance
required for the Model 2120XL.
Table 5-1: Routine Maintenance Schedule
Maintenance Task Time Schedule
Calibrate Every 1-2 weeks
Check sample gas flow rate Every 1-2 weeks
Check for excessive accumulation of dirt Weekly
Check gas lines for leaks Yearly
5.3 Fuse Replacement
1. Place small screwdriver in notch, and pry cover off, as shown
in Figure 5-1.
Figure 5-1: Removing Fuse Block from Housing
2. To change between American and European fuses, remove
the single retaining screw, flip Fuse Block over 180 degrees,
and replace screw.
3. Replace fuse as shown in Figure 5-2.
4. Reassemble Housing as shown in Figure 5-1.