Topcon DT-300 Series User Manual

3
2. PRECAUTIONS
Precautions concerning water and dust resistance
The instrument conforms to IP66 specifications for waterproofing and dust resistance when battery cover and
connector cap are closed.
• Be sure to correctly attach the battery cover to protect the instrument from moisture and dust particles.
• 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.
• 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.
• If there is a crack or deformation in the rubber packing for the battery cover, stop using and replace the
packing.
• To retain the waterproof property, it is recommended that you replace the rubber packing once every two
years. To replace the packing, contact your local dealer.
Telescope
• Aiming the telescope at the sun will cause internal damage to the instrument.
Handle
• The handle of the instrument can be removed. When operating the instrument with the handle attached,
always make sure that the handle is securely fixed to the instrument body with the handle locks.
Tribrach Clamp (Detachable tribrach only)
• When the instrument is shipped, the tribrach clamp is held firmly in place
with a securing screw to prevent the instrument from shifting on the tribrach.
Before using the instrument the first time, loosen this screw with a precision
screwdriver. And before transporting it, tighten the securing screw to fasten
the tribrach clamp in place so that it will not shift on the tribrach.
Tribrach
• Always use the tribrach provided.
• If the tribrach is installed incorrectly, the measuring precision could be effected. Occasionally check the
adjusting screws on the tribrach. Make sure the tribrach clamp is locked and the securing screws are
tightened.
Other precautions
• Confirm battery level remaining before operating.
• 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.
• When a high degree of precision is required for measurement, provide shade against direct sunlight for the
instrument and tripod.
• Remove batteries from the instrument before putting into storage after not using it for long periods. Leaving
the batteries attached for extended period of time can result in liquid leaking from batteries, which may lead
to malfunctioning.
• Always carry the instrument by its handle.
• When transporting the instrument, provide some protection to minimize risk of shocks. Heavy shocks may
cause the measurement to be faulty.
• When mounting the instrument on a tripod, use a wooden tripod when possible. The vibrations that may
occur when using a metallic tripod can effect the measuring precision. Tighten securely the leg fixing screws
of the tripod on which the instrument is mounted.
• When using high output transceiver etc., make sure it does not come near the instrument.

Topcon DT-300 Series Specifications

General

Brand	Topcon
Model	DT-300 Series
Category	Laser Level
Language	English