Maintenance; Cleaning; Fuses Replacement; Tube Replacement - Acom 1000 User Manual

User's Manual | ACOM 1000 | HF + 6m Linear Amplifier

6. MAINTENANCE

6.1. Cleaning

Do not use solvents for cleaning - they may be dangerous both for you and for the
amplifier paint or plastics.
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.

6.2. Fuses Replacement

If it is necessary to replace the mains fuses, use only standard ones.
The two Primary Mains Fuses of the amplifier are located on the rear panel (see
They are 10A/250V Quick blow, 1-1/4 x 1/4 inch Cartridge Fuses, Size "0" Ceramic.
Besides the primary fuses, on the MAINS PCB (inside the amplifier) there are three more small glass fuses
(5x20mm, 100mA and 2 x 2A slow-blow type) which are not replaced by the user. Should one of these
fuses be blown, it may be indicative of other failures. This is a complex and potentially dangerous
operation. For this reason, we recommend this work be carried out by a trained service technician.

6.3. Tube Replacement

A single 4CX800A (GU74B) high-performance ceramic-metal tetrode manufactured by Svetlana is
employed in the amplifier. Replacement is a complex and potentially dangerous operation. For this reason,
we recommend this work be carried out by a trained service technician.
August 2020
W A R N I N G
Connections).
Figure 2-1
S e c t i o n MAINTENANCE | Page 27 of 36