Model 88C Instruction Manual
5 Troubleshooting and Maintenance
Calibration and regular maintenance procedures are described in this section. If
more extensive maintenance or service of the instrument is required, please contact
Fann Instrument Company.
5.1 Calibration
This procedure is a simple method for checking the instrument. A thorough
calibration requires a calibration kit.
A calibration kit (P/N 210179) is available as a separate
purchase. See the parts list for details.
1. Set the MODE knob to RESISTANCE.
2. Set the RANGE knob to 2.
3. Push and hold the TEST button.
4. Observe the reading. The reading should stabilize at 1.800 ± 0.040 ohm-meters.
If the reading is not correct, low batteries may be the cause. Replace the
batteries and repeat the calibration. If the reading is still not correct, then return
the instrument for recalibration.
5.2 Battery Replacement
When the battery is low, the digital display will show an arrow pointing to LOW
BATT. When the LOW BATT arrow appears, replace the complete set of four
9-volt batteries.
Lift the battery tray (back of the instrument) at the slot and pull the battery tray out.
When inserting new batteries, make sure the battery terminals are placed as shown
on the diagram in the tray.
If batteries are inserted incorrectly, they will become damaged.
207980 Revision F, October 2017 12
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