KEF Uni-Q Ci3-80QT User manual

KEF Ci200.3QT, CiFDT, & Ci3-80QT Trouble shooting Guide
The majority of reported problems with the Ci200.3QT, Ci3-80QT and the CiFDT are
related to one of two possible iss es; either poor q ality / ndersized power s pply OR
fa lty control wiring. Please see the wiring diagrams at the end of this doc ment for
proper control wiring. For the Ci200.3QT there is one additional potential iss e related
to the limit switches.
Please note that the main power s pply m st always remain energised or the speaker
may drop to the open position.
All odels:
1) Altho gh the nits will work with a 12volt power s pply that has 350mA
available per connected speaker, the system will work m ch better if a larger
power s pply is sed to provide some head room. We s ggest a minim m of
400mA be available per speaker. It is important that a high q ality s pply be
sed that has less than 150mV AC Ripple.
2) Two of the most common problems fo nd with fa lty system wiring are;
a. Power s pply is connected with polarity reversed. This will likely
damage the control board and req ire the need to replace the control
board.
b. When sing a 12V trigger from a s rro nd receiver not connecting both
the negative lead from the 12V trigger and 12V power s pply to the
black (negative) power wire on the speaker. This will ca se
npredictable and hard to diagnose behavio r.
Ci200.3QT Only: Limit Switch Problem.
3) If there is a limit switch problem then when the prod ct was 1st installed and
tested it wo ld have behaved properly when rapidly cycled. B t if one of the
two limit switches is o t of alignment then power to the motor wo ld not sh t
off properly and after remaining in this mode for a while thermal protection on
the board will engage.
To test this condition, sh t off both the 12volt power s pplies and let sit for
approx. 5 min tes. Reconnect power and the motor sho ld then f nction
properly if the speaker is cycled. Yo m st check and adj st the limit switches
or the problem will reocc r.
There are two possible reasons why the limit switch problem is happening. One
is that one or more corners of the prod ct were over tightened when installed
and this is ca sing excessive flexing of the mo nting frame which is p shing
the prod ct o t of alignment. Adj st the mo nting screws if this is the problem.
The other potential reason is that the limit switches were set too close to one end
of their tolerance and the normal flexing of the prod cts when installed is
ca sing them to not engage properly. This is very ncommon on the .3 version
of the Ci200QT
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Closed Position:
When the Ci200.3QT is closed there sho ld be a 1 or 2 mm gap between the
carriage and the o ter trim. If it is closed tight with no gap it is a sign that the
limit switch is not tripping. To adj st the limit switch yo can adj st the screws
as shown Or se a long nose plier to gently flex the spring steel of the switch to
ca se the switch to engage sooner.
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Correct
Not Correct

For the open position:
These images show how the “lower” limit switch as it sho ld be adj sted.
Motion of the ho sing sho ld stop when the little roller is abo t half way p the
ramp. This adj stment may req ire a small bend to be made in the switch lever.
We do this by grabbing the metal tab j st behind the roller with needle nose
pliers and j st p tting a small bend in the tip of the lever.
Ci200.3QT Notes:
The q ite motor in the Ci200.3QT version moves more slowly than the motor in the
Ci200.2QT so these models sho ld not be mixed in the same installation.
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PREAMP OR RECEIVER
Main 12V Power
Supply
Minimum 400mA per
speaker
<150mV AC Ripple
Re Wire
Positive
AC
Outlet
Black Wire
Negative
Green
Wire
Control Black Wire
Negative
Re Wire
Positive
12V
Trigger
Output
Green
Wire
Control
Caution
12V Trigger Outputs generally
use a 1/8” mono mini plug. You
must etermine the polarity of
this output using a volt meter or
the manufacturer’s specification
for the ring an tip of this jack.
Connecting the trigger to the
speaker with the wrong polarity
may amage the speaker, the
receiver or both. Take the time to
be sure of these connections.
The trigger must stay on as long
as you want the speaker to stay
open
Ci3-80Qt,
CiFDT
or Ci200.3Qt.
homonyms.3Qt
Ci3-80Qt, CiFDT
or Ci200.3Qt
It is important that the negative wire from BOTH the 12V trigger and the 12V power
s pplies are connected to the black negative wire on the speaker. Otherwise the
speaker may not f nction properly.
Wiring with a 12V Trigger

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PREAMP OR RECEIVER
Main 12V Power
Supply
Minimum 400mA per
speaker
<150mV AC Ripple
Ci200.3
Qt, Ci3-80Qt
or CiFDT
US Ra io Shack
Relay Part # 275-226
OR
Equivalent
12VDC/30A SPST Automotive Relay
AC –DC
A aptor
12V
500mA
Re Wire
Positive
AC
Outlet
Black Wire
Negative
Optional
Dio e
1N4002
Switche
Outlet
Green
Wire
Control
Pi
n8
Pi
n
Pin
30/5
Pin8
5
Relay
Detail for
Part #
275-226
Pi
n8
Pi
n
Pin
30/5
Pi
n8
Wiring with a Switched Outlet