Cary Audio Design CAD 211 FE - Manual (Page 11)

SERVICE AND CARE
The chassis may be cleaned with a soft towel and Windex® (or a similar window cleaner). Spray it
on the cleaning cloth to moisten it, not on the component. Do not use solvents or harsh chemicals as
they may remove the labels from the chassis. The frequency and need of cleaning will be governed by
operating environmental conditions. Avoid letting the component become dusty or wet. A ‘feather
duster’ type cleaner will also work well for cleaning the component.
Replacing Vacuum Tubes
If it becomes necessary to replace the tubes, the same brand as installed new should be used. A
complete new tube kit is available from Cary Audio Design. Although useful tube life varies depending
on the nature and degree of use, under normal home use, the 845 output tube and the 300B driver
tube should last many years in the CAD 211 FE. The 6SL7 input tubes should last even longer.
NOTE:
 Any current production or New Old Stock (NOS) types of 845, 6SL7 or 300B tubes will work
fine in the CAD 211 Founder’s Edition amplifier. The voltages are fine for all available types.
WARNING
 Make sure the amplifier is unplugged 30 minutes from the AC mains before
replacing the tubes to avoid risk of shock and high heat from the 845 tube.
Factory Service
Careful consideration has been given to the design of this product to keep maintenance problems to a
minimum. If problems arise, refer to the trouble-shooting guide at the end of this manual. If the
problem is not easily solved, we suggest that you contact our Customer Service Department by phone
at (919) 355-0010, 1–5 pm Eastern Standard Time, to describe your problem in detail. Do not return
the component to the factory without a Return Authorization Number (RA) from the Customer Service
Department.
Cary Audio Design assumes no responsibility if the transportation company refuses to pay a damage
claim due to your improper packing or lack of insurance should the unit be lost in shipment. We
strongly suggest using the original packing cartons for shipping any Cary Audio Design component.
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