ET120 & ET60 Installation & Maintenance Manual
Preparation
Remove the front panel plate containing the circuit board, first remove the white connecting lead to the
mains transformer, then remove the 4 Philips head screws (two on the left, two on the right), Exercise
static precautions to prevent damage to the electronics, store the front panel assembly safely until the
amplifier is mounted and cables have been attached.
Before mounting the amplifier on the wall it is advisable to remove the cable knockouts. Decide how the
wiring will be brought into the panel and remove the required knockouts for cable entry. If a knockout is
removed fill the hole with a good quality cable gland. 4 knockouts are provided, 3 on the top face.
On the bottom face a single knockout is for the incoming mains, mains SHOULD NOT enter the box by
any other hole. If additional holes are required, then the can be drilled, taking care not to obscure the
transformer or PCB locations. Unused knockouts must be left unopened to comply with the LVD (Low
Voltage Directive), accidentally knocked out holes should be blanked off. This work must be carried out
prior to the re-installation of circuit boards.
Mounting The Amplifier
Before mounting the AFILS amplifier on the wall it is advisable to remove the cable knockouts as
described above. The ET120 weighs 3KGs, so care should be taken to securely mount the unit on stud
walling.
Connections
All wiring should come into the enclosure via the knockouts provided and be fixed tidily to the relevant
terminals.
Note that correct cable glanding is essential and due regard should be paid to any system specifications
which demand a certain cable type (providing it meets the appropriate national wiring regulations).
Planning The Wiring
All System wiring should be installed to meet the appropriate parts of BS 7671 (Wiring Regulations).
Other national standards of installation should be adhered to where applicable.
You must observe local wiring regulations. Do not run SELV and LV cables in the same enclosure
without adequate insulation between them.
Document DCC ET12 7001-03 Rev 1 Aug 2005
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