Teledyne OT-3 operating instructions Replacing the Fuse, Trace Oxygen Analyzer Maintenance

Trace Oxygen Analyzer Maintenance

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.

5.1Replacing 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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