SIELCO srl
- Via Toscana, 57/59 - 20090 BUCCINASCO (Mi) - ITALY - tel. 02 - 45713300 - www.sielco.org
EXC/RTX19 - USER & MAINTENANCE MANUAL - rev.1.5 - 05/16
Page 17
SERVICE AND MAINTENANCE
The STL Transmitter is cooled by a light forced air flux and may require some internal cleaning
after some years of continuos service internally and especially on the ventilation fan. A soft brush
or compressed air is recommended to this aid, after having removed the apparatus from mains. The
Receiver is natural convection cooled and do not requires any internal cleaning. Both the apparatus
may be externally cleaned with a wet cloth always after they have been removed from mains.
It is very important to install the apparatus on a stable stand/rack, in such a way to permit good
ventilation. Other than this, because of the high-quality materials used in their manufacture, if it
is correctly installed in an adequately protected environment it will not require special
maintenance for quite some time.
After a few years of continuous service, it is recommended that the apparatus is overhauled in
the factory or in a specialised laboratory, where the characteristics can be checked against the
initial ones and re-calibration can be done when needed. Internal presets are extremely stable and
we don not recommend tampering with them if not in specially equipped laboratories.
Never change the internal calibrations to avoid altering the transmitter and receiver
declared performances.
It is especially important that the power supply be over-hauled when the apparatus have been
working for years at high temperatures, over 30 / 35 °C. Ventilation fan in the Transmitter may also
require to be replaced after 20-30000 hours.
GUARANTEE
Like all SIELCO's solid state equipment, the STL carries a one-year guarantee on all their
components with the exclusion of the final RF power transistor, which may be damaged by faulty
output connections.
This guarantee is null and void if the apparatus is tampered with or if failure is due to improper
use, wrong installation or external causes, such as mains overvoltage.
This guarantee covers work done exclusively in our laboratories and in those of our agreed
representatives.
The goods shall be delivered carriage prepaid to the laboratory and shall be returned freight
forward.
This guarantee does not cover any consequential damage due to non-operation or faulty
operation.