Maintenance - Extech Instruments HD450-NIST User Manual

Maintenance

Cleaning
The Meter and its sensor can be cleaned with a damp cloth. A mild detergent may be used but
avoid solvents, abrasives, and harsh chemicals.
Battery Installation / Replacement
The battery compartment is located on the back of the meter. The compartment is easily accessed
by pressing and sliding the rear battery compartment cover off of the meter in the direction of the
arrow. Replace or install the 9V battery and close the battery compartment by sliding the
compartment cover back onto the meter.
Never dispose of used batteries or rechargeable batteries in household waste.
As consumers, users are legally required to take used batteries to appropriate
collection sites, the retail store where the batteries were purchased, or wherever
batteries are sold.
Disposal: Do not dispose of this instrument in household waste. The user is obligated to take end-of-
life devices to a designated collection point for the disposal of electrical and electronic equipment.
Other Battery Safety Reminders
Never dispose of batteries in a fire. Batteries may explode or leak.
o
Never mix battery types. Always install new batteries of the same type.
o
Storing
When the meter is to be stored for a period of time, please remove the battery and affix the sensor's
protective cover. Avoid storing the meter in areas of extreme temperature and humidity.
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