5. MAINTENANCE
DANGER
Both the mains voltage and the high voltages up to 3000 V inside the amplifier are
LETHAL!
For your safety, pull the amplifier power plug out of the mains wall outlet and WAIT AT
LEAST 30 minutes EACH TIME BEFORE you remove the cover of the amplifier. Do not
touch any part inside while the amplifier is open because some residual voltages may
still be present.
If no indicator glows upon switching the amplifier ON, the main fuse(s) may have blown
(see Section 5.3 Fuse Replacement).
5.1. Periodic Maintenance
Periodically (but at least once per year) check all connections, contact cleanliness and the tightening of all
connectors, in particular the coaxial ones.
Check the integrity of the cables, in particular when they are laid on the floor. Check also if the cables are
secured well in the area where they come out of the connector body.
Pay particular attention to the mains plug and the wall outlet (see Sections 2.4.f) The IEC 320 Power inlet and
2.4.g) Preparation of wall outlet). If you have any doubts consult with a qualified electrician.
Periodically check the SWR of the antennas and if this changes over time. Problems could occur more often
in poor weather conditions - rain, snow, strong wind etc.
5.2. Cleaning
CAUTION
Do not use any solvents for cleaning. They may be dangerous to you and damage
amplifier surfaces, paint and plastic components.
Do not open the amplifier. Cleaning of the amplifier outer surface can be done with a piece of soft cotton
cloth lightly moistened with clean water.
Also, clean (as much as possible from the outside, without opening the amplifier) all ventilation apertures
on the cover and the chassis, including the ones on the bottom.
DANGER
Never push or put anything into holes in the case - this will cause electric shock.
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