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| MAINTENANCE | GEOKON
4.
MAINTENANCE
4.1
LOW BATTERY INDICATION AND AUTO-OFF
The GK-404 continuously monitors the status of the two 1.5V AA cells. When
their combined voltage drops to 2V, the message Batteries Low is displayed on
the screen. A fresh set of 1.5V AA batteries should be installed at this point. If
the battery voltage drops to 1.8V, the message REPLACE BATTERIES will be
displayed on the screen; the GK-404 will then shut off. All settings are still saved
in the internal nonvolatile memory.
4.2
BATTERY REPLACEMENT
Alkaline batteries are the best choice for use in the GK-404. A set of two 1.5V AA
batteries are installed in the GK-404 at the factory. To replace the batteries, use a
#1 Phillips screwdriver to remove the battery compartment cover located at the
back of the readout. Install a new set of batteries following the polarities
indicated inside the battery compartment. Reinstall the battery compartment
cover.
Never use two different types of batteries or mix old batteries with new. This
could cause batteries to leak and permanently damage the readout. Although
alkaline batteries are highly recommended, carbon zinc A batteries can be used.
4.3
CLEANING
A clean cloth can be used to wipe down the GK-404 Readout. No solvents
should be used as they may damage the case of the readout.
4.4
CALIBRATION
The readout should be sent periodically (every 12 months) to the manufacturer
for inspection, cleaning, and calibration. A nominal fee will be charged for the
service, but it is highly recommended.
