BC
Broadcast
11
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4. Maintainance
A BC4 console requires no regular maintenance. Service is only
required, if there is a failure that makes repair necessary. Almost
all problems can be fixed by exchanging a defective module.
Following our recommended procedures for the use and care of the
console will result in an extended lifespan of the console.
Console use
All electromechanical components of the console, such as potentiometers,
switches, faders, and relays are self-cleaning. However, self-cleaning
only occurs when the particular component is in use. The electrical and
mechanical lifespan of these components exceeds the useful life of the
system in any case. A rotary pot, for instance, that has a lifespan of 50000
rotation, will work properly for a period of more than 30 years if it is used
one time in an hour for 8 hours a day and 200 work days per year. Long-
term reliability is directly connected to continuous operation. Fine dust and
hardened grease, will be a problem for components that remain unused
for years. If it is not possible to use all the components of a console
constantly, we recommend that you actuate all pots and switches at least
one time per 6 months to keep the self cleaning process running.
Testing the console
From time to time, (we recommend at least one time per year) all
functions of the mixer should be tested. Check every function, all the
inputs and outputs and all controls and switches of the entire console. If
you are not able to make any necessary repairs immediately, make a note
of all problems that were found for future repairs. With large, complex
consoles, it is a good idea to maintain a logbook at hand that is used to
note all problems in the studio. Since it is likely that most of the problems
will be discovered while working with the console, it is good idea to make
a quick note which includes all the details of the problems such as; the
particular channel, the source signal and any special setting that caused
the problem. This helps a service technician to locate problems. Many
problems that come up in a particular setting only, may not be easily
reconstructed after the end of a session. The more precise the notation in
the logbook, the more likely it is that mistakes that are caused by a bad
cable or anything else that is not a problem of a function of the console
itself, can be found and repaired.
Cleaning
Only non-corrosive cleaners such Isopropyl alcohol should be used
for cleaning the console and its components. Isopropyl alcohol is he
best choice for all parts, including the plastic knobs and caps and the
pushbutton knobs, all electric components and the top plates. More
aggressive cleaners can cause problems because they might corrode
mechanical or electrical components.
Do not use any kind of thinner
–
you will have to replace all plastic parts that were exposed to the thinner.
Potentiometers and push buttons
Depending on the environmental situation at the location, the grease
inside the switches, rotary pots and slider faders begins to harden within
a period between approximately 6 years and 15 years. It is not possible
to determine an exact time when this occurs, since the environmental
influence is different from location to location and the frequency of use of
the different components also has an influence on this condition as well.
It is very easy to prevent these effects just by following these simple
maintenance steps. We recommend that this be done after 6 six years of
operation.
Rotary pots and slider faders:
When the grease between bushing and shaft begins to harden, the pot will
run tight. Apply a small drop of penetrating oil between the shaft and the
bushing and turn the pot 5 to 10 times. Doing this will keep the pots in
good shape for many years.
Pushbutton switches
The grease in the pushbutton switches will also begin to harden. Since
it is the same process, this will usually happen at the same time and it
depends on the environmental conditions and the frequency of use. The
best way to maintain pushbutton switches is the use of a special lubricant,
