9
THERMAL protection indicator (1, 5, 9)
Alerts of the tunnel cooling temperature when it has risen above 90 centigrade degrees.
The amplifier will then start up automatically when the temperature descends to 75 centigrade
degrees.
The APA600 amplifier features one TH indicator while the APA1000 and 1400
models use one for each channel, denoting that both channels operate independently. The
protection on one channel could be active while the other channel keeps working correctly.
SP Signal Presence indicator (3, 7)
It points to the existence of signal at the amplifier input. These indicators light up
when the input signal surpasses -40dB.
5. CLEANING
The control panel must not be cleaned with any dissolvent, abrasive or petroleum
derivated substance else paint and silk-printing could be damaged.
Whenever cleaning should be necessary use a soft cloth slightly wet with water and
neutral liquid soap or with a solution of water and alcohol at 50%. Be careful that no liquid gets
into the amplifier. Never use sharp or erosive objects to scratch the control panel.
Should any liquid get into the amplifier, do not use any cleaning sprays; send the unit
to the nearest ECLER Technical Service.
