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Hour Meter
IMPORTANT: Make sure to observe polarity on the
meter label when testing. Damage to the meter may
result from an improper connection.
1. Connect the positive (+) terminal of a 12 VDC
source to the positive terminal of the hour meter.
2. Connect the negative (–) terminal of the voltage
source to the other terminal of the hour meter.
3. The hour meter should move a 1/10 of an hour in six
minutes.
SP 2020/3020
4. Disconnect the voltage source from the hour meter.
Figure 6
WINDOW
1/10 WHEEL: WHITE W/BLACK NUMBERS
HOUR WHEELS: BLACK W/WHITE NUMBERS
1
–
10
HOURS
0 0 0 0 0
RUNNING: INDICATOR
QUARTZ
SP 5020
Figure 7
Sand Pro 2020/3020/5020 Page 5 – 11 Electrical Systems
Electrical
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