36
0171-761-EN
Replacing parts
UNISAB S-Control comprises two basic
parts:
·
the
power
section in the base of the box
where all components connected to the
main voltage are fitted on a common
printed circuit board (PCB).
If a fault occurs, we would recommend that
you replace the complete PCB in agreement
with SABROE.
The print board can be removed from the
box by unscrewing the 14 nuts NV 5,5.
The power section is protected by a fuse
315 mA/250 V/AC or 630 mA/110 V/AC
fitted on the PCB as shown on the drawing
in the chapter entitled
Operating the UNI-
SAB S-Control
.
·
The
computer
section is fitted in the
cover and protected by a strong plate
screen. We would not recommend that
you repair this section -- replace the
complete cover with a new unit in agree-
ment with SABROE.
The parts are replaced as follows:
·
Disconnect the power supply.
·
Remove the electric multiplug from the
heavy current section of the print board.
As the drawing illustrates, the two
locking pawls should be twisted to each
side. You can then pull the multiplug
with the flat cable out of the socket.
·
Unscrew the 2 screws that fasten the cov-
er to the hinges. The complete cover
with computer can then be removed.
When you replace the multiplug, press the
plug down and put the locking pawls firmly
into place, as shown in the drawing.
Transfer the EPROM unit from the defec-
tive module to the new module. Please refer
to instruction no. 0171-756.
Recalibrate the transducer as described in
the following:
Calibrating pressure transducers when
replacing the computer:
At delivery, the blue label on the inside of
the UNISAB S-Control cover will indicate
the value for each pressure transducer.
These values must be coded into the new
computer.
·
Once the new computer has been fitted,
bring the UNISAB S-Control into con-
figuration mode.
·
We recommend that you use the old co-
ver again, because all the calibration con-
stants are indicated on it.
·
Now select suction pressure
and code
in the value for suction pressure stated on
the blue label. (See the chapter entitled:
Changing parameters
).
Summary of Contents for UNISAB S-Control
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