Maintenance
14
Meter & Meter Housing
Clean the meter and meter housing using a cloth dampened with a mild
detergent solution. Do this only when necessary and take care not to allow
water to enter any of the circuitry as damage may result.
Battery Care
The Model 4410 & 4410A will operate for a minimum of 24 hours from one 9
volt alkaline battery. The battery test is used to determine when to replace the
battery. Follow the instructions in the Battery Replacement section to install a
new battery. The Model 4412A will operate for 7 hours from one fully charged 9
volt NiMH battery before recharging is required. Use the battery test to
determine when to recharge the battery. Recharging is accomplished by
connecting AC power to the wattmeter. This takes approximately 14 hours
when the unit is off. To prolong the life of the battery, it is recommended that it
be allowed to fully discharge periodically before recharging. If the battery loses
the ability to hold a charge, it can be replaced with a standard 9 volt NiMH
battery.
For an extended period of inactivity it is recommended that the battery be
removed from the unit and stored in the proper environment. To achieve the
longest battery life, the most advantageous storage temperatures are between
+10° and +35° C (50° to 95° F) at a relative humidity of 50%.
CAUTION
Model 4412A only
Do not replace with an alkaline battery.
Battery Replacement
The battery holder is located on the back of the unit near the top of the meter
housing cover. Refer to
Figure 2 on page 4
.
1. Open the battery compartment cover.
2. Slide the battery out of the compartment.
3. Remove the snap-on battery plug.
4. Replace battery with a new one.
5. Feed wires through hole in back of compartment.
6. Place battery in compartment.
7. Close compartment.
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