4 HG2G-5T, HG1G
35-66 WindO/I-NV4 User’s Manual
4.10 Maintenance and Inspection
Maintain and inspect the HG2G-5T, HG1G periodically to ensure the best performance. Do not disassemble, repair, or
modify the HG2G-5T, HG1G during inspection.
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Replacing the Backup Battery
A backup battery is built into the HG2G-5T, HG1G to retain the internal backup data (log data, keep resister, and keep
relay) and clock data.
When the “Replace the battery” message is displayed, replace the backup battery by following the procedure below.
When the “Battery level LOW” message is displayed, replace the battery immediately; otherwise, the backup data and
clock data may be lost.
Whether or not to display the reminder message for battery replacement can be specified with the configuration
software. Refer to Chapter 4 “3.1 System Tab” on page 4-25 for details.
1 Follow the procedure below to remove the battery holder cover.
2 Turn on the power to the HG2G-5T, HG1G, wait for approximately one minute, and then turn off the power again.
3 Insert a flat head screwdriver into the battery holder, as shown in the figure below, and remove the battery.
The battery may pop out from the battery holder.
Display
Wipe any stain of the display using a soft cloth slightly dampened with neutral detergent or alcoholic
solvent. Do not use solvents such as thinner, ammonia, strong acid, and strong alkaline.
Terminals,
Connectors
Check the terminals and connectors to make sure of no loose screws, incomplete insertion, or
disconnected lines.
Mounting Clips
Make sure that all mounting clips and screws are tightened sufficiently. If the mounting clips are loose,
tighten the screw to the recommended tightening torque.
Backlight
The HG2G-5T, HG1G’s backlight cannot be replaced by the customer. When the backlight needs to be
replaced. Contact your vendor or IDEC Corporation.
Backup Battery
The operating life of the internal battery is approximately five years. It is recommended to replace the
battery every five years even before the reminder message for battery replacement is displayed.
Touch Panel
A gap may be caused in the operation accuracy of the touch panel by the secular distortion, etc.
Readjust the touch panel in the System Mode according to the following procedure when there is a gap
in the operation of the touch panel.
Refer to “Adjusting the Touch Panel” on page 35-69 for details.
HG2G-5T HG1G
Turn the cover counterclockwise using a coin. Use a flat head screwdriver.
After turning off the power to the HG2G-5T, HG1G in step 2, complete the steps through 4 within 30
seconds to replace the battery without losing the backup data and clock data. However, it is recommended
that the backup data be transferred to flash memory as a precautionary measure. For the procedure to
transfer the data to flash memory, refer to Chapter 33 “Internal Devices” on page 33-1. If it is not necessary
to save the data, step
2 can be skipped.
HG2G-5T HG1G
Enlarged view
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