Product Manual

77
Care & Maintenance
Care and
Maintenance
C WARNING - Do not remove the instrument cover from the
instrument. The instrument is designed to withstand
normal electromagnetic disturbance from the environment
but it contains circuits that are sensitive to static
electricity. If an unauthorized person opens the instrument
cover, the function of the instrument is not guaranteed and
the warranty is invalidated.
The instrument is designed and tested to withstand field
conditions, but like all precision instruments, it requires care
and maintenance. Take the following steps to get the best
results from the instrument:
1. Do not subject the equipment to rough jolts or careless
treatment.
2. Keep the lenses and reflectors clean. Use only lens paper or
other material that is designed for cleaning optical
equipment. As a cleaner, a solution of pure water and
20-30% 2-Propanol specified with evaporation residue
<5mg/l.
3. Keep the instrument protected and in an upright position,
preferably in the instrument case.
4. Do not carry the instrument while the instrument is
mounted on a tripod. Doing so can damage the tribrach
screws.
5. Do not carry the instrument by the telescope barrel. Use
the handle.
6. When you need extremely precise measurements, make
sure that the instrument has adapted to the surrounding
temperature. Significant variations in instrument
temperature can affect precision.
Cleaning
C CAUTION - Never use strong detergents such as benzine or
thinners on the instrument or the instrument case.
Be very careful when cleaning the instrument, especially when
removing sand or dust from lenses and reflectors. Never use