3
Servicing & Maintenance
3.1 Valves
All valves are selected to ensure that the unit gives
optimum performance. Input valves are always
matched when the unit is calibrated to ensure
consistent performance across both channels.
Although Thermionic Culture Ltd guarantees the
valves for twelve months, they can last for up to
twenty years.
Spares can be obtained in matched pairs from
Thermionic Culture Ltd.
3.2
Operating voltage / Fuses
The Phoenix Valve Compressor is factory set to
operate from a 230V 50/60Hz AC mains supply It can
be set to operate from 115V AC by sliding the voltage
selector switch on the rear panel to the ‘115V’
position.
NOTE: If the mains supply voltage is reduced to 115V,
then the mains fuse MUST be increased to 1.6A in
accordance with the following table:
Operating Voltage
Fuse Rating
115V
T1.6A 20mm type
230V
T800mA 20mm type
©
Thermionic Culture Ltd, January 1999
7
