Valve Audio Devices DAC-10 User Manual - page 15
15
IMPORTANT:
Tube (valve) replacement
The DAC must be powered
OFF
by the mains switch on the back panel (mains
IEC socket
) and
then fully disconnected from the mains socket for a minimum of
10 minutes
before
commencing any tube replacement.
(`bleeding` circuit fully discharges power supplies within 2 minutes, but take care as the valves
may be still too hot to handle).
Fuse
The unit is fitted with an Anti Surge
1A
fuse, which is located in the IEC mains socket on the
back panel –
this must be replaced only with the same amperage value!
(a spare fuse is
provided in the fuse “drawer”). In case of subsequent fuse failure, the unit should to be sent to
an authorised VAD service agent for checking.
Earth connection
Theunit must be earthed!
This is provided by the safety earth contact in the IEC mains socket.
Make sure that the earth connection of your home mains electrical installation is in order.
Removing the protective Valve Cover.
The valve cover is secured to the top of the unit by way of 4 hex bolts being accessible through
slots in the valve cover. The cover may be removed in order to facilitate tube replacement by
using the supplied long hex key (2mm) tool to undo the bolts.
We do not recommend using DAC-‐10 / DAC-‐10 DSD without the protective cover – valves are
hot when operating.
DAC-‐10 / DAC-‐10 DSD valvesoperational `life span` information.
The DAC-‐10 / DAC-‐10 DSD have been designed to the highest parameters, with each
component rigorously tested. We have chosen to use NOS (New Old Stock) valves due to their
audio qualities and longevity. However, due to the nature of vacuum valves, we offer a 90 days
from purchase date warranty for the valves originally supplied for peace of mind
.