GAUGE TURNS OFF AFTER IT IS TURNED ON
✓
To conserve power, the Model 3450 provides a sleep mode (see
page 3–17). To turn the display on in the sleep mode, press any
key.
✓
The gauge may be wet. Do not turn the gauge on until
moisture is removed from gauge interior! Component
damage may result. If the gauge is wet, dry the gauge interior
with hair dryer (on low heat) for 3 hours.
✓
Replace the alkaline batteries.
✓
If the rechargeable battery is below 4 volts, recharge or replace
the batteries (see page C–20).
✓
The scaler (control unit) may be defective. To test, replace the
suspect scaler with a good scaler.
SHORT BATTERY LIFE AFTER RECHARGING
✓
NiCad batteries may be charged up to 100 or 500 or more full
charge/discharge cycles. The batteries may be reaching the end
of their life cycle, and should be replaced.
✓
Charger/adapter may not be supplying full charge – check the ac
outlet and the dc output (12 V dc) using a voltmeter on the
proper setting.
✓
Check that you are using the correct charger.
✓
Remove any loose screws or foreign objects from the gauge
interior that may cause an electrical short to ground.
✓
The ac charger may be defective. To check, use the dc adapter
to charge the batteries.
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