[TenTec] Care and Feeding of Centurions

Bob McGraw - K4TAX RMcGraw at Blomand.net
Sun Feb 2 15:03:25 EST 2014

First, disconnect the power.   The voltage in this unit will KILL YOU!

Once a year, remove the case and covers.  Be sure the HV shorting strap/bar 
is in tact and does short the HV supply.  This is when the unit is being 
serviced and out of the case.

Clean the fan blades, add one drop of 3 IN 1 oil to the shaft bearings. 
Take care not to bend any of the fan blades.    Clean any dust from inside 
the case using one of the "computer type" compressed dusters.  Look for any 
discolored connections, discolored areas on the PC boards and, specially at 
the base of the tube sockets.  If any exists, replacement or repair is 

Put everything back in place and do install ALL of the screws.  The amp is 
ready for another year of working DX.

Proper tuning and loading and proper drive is the key to success for long 
amp and tube life.

Bob, K4TAX

----- Original Message ----- 
From: "Richards" <jrichards at k8jhr.com>
To: "Discussion of Ten-Tec Equipment" <tentec at contesting.com>
Sent: Sunday, February 02, 2014 1:26 PM
Subject: [TenTec] Care and Feeding of Centurions

>I don't want to derail the thread about Bry's injured Centurion ...
> so I pose this question in a new thread:
> What can one do (beyond not running it to
> extremes and stressing it) to prevent problems
> from occurring?   Can we perform any any sort
> of preventive maintenance that might avert
> issues from arising as our Centurions get older?
> Thank you.
> ----------------------------  K8JHR ------------------------------
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