User's Manual | ACOM 1200S | 1.8-54 MHz Linear Power Amplifier
S e c t i o n MAINTENANCE | Page
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7. MAINTENANCE
DANGER
Both the mains voltage and the high DC voltage up to 500 V inside the ACOM 1200S
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.
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 2.4.g) The IEC 320 Power inlet and
2.4.h) 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.
b) Air filters
ACOM 1200S has two air filters that are accessible from the bottom (see Figure 7-1 Bottom view - Air Filters).
Periodically (more often in a dusty environment, but at least once per year) clean the air filters without
opening the amplifier.
CAUTION
The air filters may be too dusty - be careful how you clean them so that you DO NOT
INHALE (BREATHE IN) neither spill the dust over! Wrap them, for instance, in a wet cloth
before cleaning!
• PA air filter
Please, see Figure 7-1 Bottom view - Air Filters, Pos. (1).
- Use a Philips-1 screwdriver to unscrew the 4 mounting screws (Figure 7-1 Bottom view
- Air Filters, Pos. (3));
- Remove the square filter cover (Figure 7-1 Bottom view - Air Filters, Pos. (5));
- Take out gently the foam-like plastic filter.
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