Maintenance; Periodic Maintenance - Acom 700S User Manual

User's Manual | ACOM 700S | 1.8-54 MHz Linear Amplifier

7. MAINTENANCE

Both the mains voltage and the high DC voltage up to 500 V inside the ACOM 700S
amplifier are LETHAL!
For your safety, pull the amplifier power plug out of the mains wall outlet and WAIT AT
LEAST 3 minutes EACH TIME BEFORE you remove the cover of the amplifier.
If no indicator glows upon switching the amplifier ON, the main fuse(s) may have blown
(see Section
7.3 Fuse Replacement

7.1. Periodic Maintenance

a) Periodic checks
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
Preparation of wall outlet
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.
b) Air filter
ACOM 700S has one air filter that is accessible from the rear (see
Periodically (more often in a dusty environment, but at least once per year) clean the air filter without
opening the amplifier.
The air filter may be too dusty - be careful how you clean it so that you DO NOT INHALE
(BREATHE IN) neither spill the dust over! Wrap it, for instance, in a wet cloth before
cleaning!
The filter is contained in an externally mounted plastic enclosure. The cover of the enclosure, together with
the filter itself, is removed by gently pulling it away from the amplifier. Carefully clean the filter and cover
from dust, wash it with tap water and leave it to dry up before you mount it back.
Finally put the filter back in the filter enclosure cover and click the cover back in place.
April 2024
).
. If you have any doubts consult with a qualified electrician.
DANGER
Figure 2-4 | Rear panel - Connections
CAUTION
S e c t i o n MAINTENANCE | Page 55 of 92
and
2.4.g) Power cord 2.4.h)
, Pos. (2)).