Precautions - Topcon DL-501 Instruction Manual

2. PRECAUTIONS

Precautions concerning water and dust resistance
DL conforms to IP54 specifications for waterproofing and dust resistance when the battery cover,
External interface hatch, and Multi Port cap is closed.
• Make sure that moisture or dust particles do not come in contact with the terminal or connectors.
Operating the instrument with moisture or dust on the terminal or connectors may cause damage to
the instrument.
• Be sure to correctly attach the connector cap to protect the DL from moisture and dust particles
when the connector is not in use.
• Make sure that the inside of the carrying case and the instrument are dry before closing the case.
If moisture is trapped inside the case, it may cause the instrument to rust.
The Lithium Battery
The lithium battery is used to maintain the DL Calendar & Clock function. It can back up data for
approximately 5 years of normal use and storage (Temperature = 20°, humidity = about 50%), but its
lifetime may be shorter depending on circumstances. When the voltage of the lithium battery has
decreased, or the battery itself is depleted the date/time may not be displayed correctly and an error
message "The battery for the clock function needs to be replaced." will be displayed.
For details on replacing lithium batteries contact your local dealer.
Backing up data
Data should be backed up (transferred to an external device etc.) on a regular basis to prevent data
loss.
Other precautions
• Never place the instrument directly on the ground. Sand or dust may cause damage to the screw
holes or the centering screw on the base plate.
• Protect the instrument from heavy shocks or vibration.
• Protect the instrument from rain or drizzle with an umbrella or waterproof cover.
• When the operator leaves the instrument attached to the tripod, the vinyl cover should be placed on
the instrument.
• Never carry the instrument on the tripod to another site.
• Turn the power off before removing the battery.
• Remove the battery before placing the DL in its case.
• Make sure that the instrument and the protective lining of the carrying case are dry before closing
the case. The case is hermetically sealed and if moisture is trapped inside, the instrument could
rust.
• Consult your local dealer before using the instrument under special conditions such as long periods
of continuous use or high levels of humidity. In general, special conditions are treated as being
outside the scope of the product warranty.
Maintenance
• Wipe off moisture completely if the instrument gets wet during survey work.
• Always clean the instrument before returning it to the case. The lens requires special care. First,
dust it off with the lens brush to remove tiny particles. Then, after providing a little condensation by
breathing on the lens, wipe it with the wiping cloth.
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