Teledyne 3000PB - Bulkhead mount percent oxygen analyzer - Manual (Page 65)

Percent Oxygen Analyzer Maintenance 5
5-7
Teledyne Analytical Instruments
Note: Evidence of damage due to tampering or mishandling will
render the cell warranty null and void.
5.4 Fuse Replacement
The 3000PB requires two 5
× 20 mm, 4 A, T type (Slow Blow) fuses.
The fuses are located inside the main housing on the Electrical Connector
Panel, as shown in Figure 5-3. To replace a fuse:
1. Disconnect the Unit from its power source.
2. Place a small screwdriver in the notch in the fuse holder cap,
push in, and rotate 1/4 turn. The cap will pop out a few
millimeters. Pull out the fuse holder cap and fuse, as shown in
Figure 5-3.
3.0 A MAX
Figure 5-3: Removing Fuse Cap and Fuse from Holder
2. Replace fuse by reversing process in step 1.
5.5 System Self Diagnostic Test
1. Press the System button to enter the System function.
2. Use the arrow keys to move to More, and press Enter .
3. Use the arrow keys to move to Self-Test, and press Enter .
The screen will follow the running of the diagnostic.
RUNNING DIAGNOSTIC
Testing Preamp — 83