MAINTENANCE
Read This Section Before Use!
Avoid prolonged exposure to the sun or the heat of a closed vehicle.
Efficiency could be adversely affected.
If the DTM-502 has been used in wet conditions, immediately wipe
off any moisture and dry it completely before replacing it in its
carrying case. The DTM-502 contains many sensitive electronic
assemblies which have been well protected against dust and
moisture. However, should dust or moisture be introduced into the
instrument, severe damage could result.
Sudden changes in temperature may cloud the lenses and
drastically reduce the measurable distance, or initiate an electrical
system failure. Should this occur, leave the instrument in a warm
location with the case closed until the temperature of the instrument
returns to room temperature.
Avoid storing the DTM-502 in hot humid locations. Especially, the
battery pack should be stored in a dry location at a temperature of
less than 30°C. Higher temperature and excessive humidity may
result in growth of mold on the lenses and deterioration of the
electronic assemblies, leading to instrument failure.
Store the battery pack with the battery discharged.
When storing the instrument in areas subject to extremely low
temperature, leave the carrying case open.
Do not overtighten any of the clamp screws.
When adjusting the vertical and upper plate tangent screws or the
leveling screws, stay as close as possible to the center of the
screw’s range, as indicated by a line on the screw.
Use a clockwise rotation of the tangent screws for final adjustment.
If the leveling base is to be left unused for an extended period,
lock-down the leveling base clamp knob and tighten its safety
screw.
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