Manual
KVCG202/EN M/H
9.9.4.3 Replacing the power supply board
Remove the two screws securing the right hand terminal block to the top plate of the
module.
Remove the two screws securing the right hand terminal block to the bottom plate of the
module.
Unplug the back plane from the power supply pcb.
Remove the securing screw at the top and bottom of the power supply board.
Withdraw the power supply board from the rear, unplugging it from the front bus.
Reassemble in the reverse of this sequence.
9.9.4.4 Replacing the back plane
Remove the two screws securing the right hand terminal block to the top plate of the
module.
Remove the two screws securing the right hand terminal block to the bottom plate of the
module.
Unplug the back plane from the power supply pcb.
Twist outwards and around to the side of the module.
Replace the pcb and terminal block assembly.
Reassemble in the reverse of this sequence.
9.9.5 Recalibration
Whilst recalibration is not usually necessary it is possible to carry it out on site, but it
requires test equipment with suitable accuracy and a special calibration program to run
on a PC. This work is not within the capabilities of most people and it is recommended
that the work is carried out by an authorised agency.
After calibration the relay will need to have all the settings required for the application re-
entered and so it is useful if a copy of the settings is available on a floppy disk. Although
this is not essential it can reduce the down time of the system.
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