Teledyne OT-3 User Manual download pdf (Page 39)

Trace Oxygen Analyzer Maintenance

Teledyne Analytical Instruments 31

Maintenance

Aside from normal cleaning and checking for leaks at the gas

connections, the Model OT-3 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 Fuse

CAUTION: ON AC UNITS, REMOVE THE POWER TO THE UNIT

BEFORE REPLACING THE FUSE.

When a fuse blows, check first to determine the cause, then replace

the fuse using the following procedure:

AC Units

1. On AC units, disconnect the power. 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.

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. There are two fuses in use and are

visible in the clip.

4. Remove the bad fuse and replace it with a 5x20mm 0.5 A,

250 VAC, IEC time lag (T) fuse (P/N F1130).

5. Replace the fuse holder into its receptacle, pushing in firmly

until it clicks.

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Teledyne OT-3 User Manual Page 39