Engineering manual - UniSAB III 1.10.8
001930 en 2021.06
339/346
10. Parts replacement
If some of the UniSAB III main parts are defective they can be replaced. It is recommended to contact
Johnson Controls Denmark before replacing any of these parts.
Only original parts must be used for replacement. The manufacturer must perform repair of parts.
The main parts comprise:
a.
Front panel in which display and keyboard are fitted
b.
Controller module (cassette) with plug connections
Additional parts:
c.
Internal battery
All replacements must be carried out with UniSAB III in a state of no voltage.
Remember that outside
control voltage may still be connected/live although the power supply for UniSAB III is discon-
nected.
Also disconnect the main supply to the motor to prevent it from starting up inadvertently.
The parts are shown in chapter
.
10.1
Replacing front panel
Open the front panel by loosening the two bolts at the bottom of the panel (bolt size 6x16mm, Torx T30).
Be careful not to stretch the cable for the front panel and place the front panel in the service position.
Loosen the two small screws fastening the front panel cable to the controller module, and disconnect
the cable. The front panel can now be removed from the UniSAB III controller.
Disconnect the front panel cable from the old front panel and check the cable. If the cable is in good con-
dition it can be reused with the new front panel. If it is damaged a new cable must be used.
Mount the new front panel in the reverse order as described above. When closing the front panel, please
observe the position of the front panel cable and be careful not to catch the cable between the front pan-
el and the control cabinet.
Connect supply voltage.
10.2
Replacing controller module (cassette)
Depending on the error in the controller module, it can be an advantage to transfer the configuration files
to the SD flash card before replacing the module. By doing so, you can quickly upload the complete con-
figuration to UniSAB III when the controller module has been replaced, and the unit will be configured
the exact same way as before. See chapter
8. UniSAB III (boot) and communication set-up
for a descrip-
tion on how to transfer and upload configuration files.
Remove the front panel as described in subsection
.
Disconnect all the cable plug connections. Please note that each plug is fastened with two small screws
(one in each end of the plug). Be careful not to pull the wires when disconnecting the plugs. When all the
cable plugs are disconnected it may be necessary to dismantle the cable glands in the bottom of the
control cabinet to provide easy access to the controller module.
The controller module is fastened by 6 bolts, 3 at the top and 3 at the bottom of the control cabinet (bolt
size 5x8mm, Torx T25). Loosen the 6 bolts (it is not necessary to unscrew the bolts completely). It is
now possible to lift off the controller module from the 6 bolts and remove it from the control cabinet.
Mount the new controller module in the reverse order as described above. When UniSAB III is powered
up again, check the installed program version and if necessary update to another version. If the configu-
ration files were transferred to the SD card before the controller module was replaced, the files can be
uploaded to the new module. See chapter
8. UniSAB III (boot) and communication set-up
for a descrip-
tion on how to update the program version and upload configuration files.
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