3.For demounting and exchange of a (head) module or a group ofmodules, due to mounting reasons you always have to remove theelectronic module right beside. After mounting it may be pluggedagain.Press the unlocking lever at the lower side of the just mounted right module nearthe bus coupler and pull it forward.4. Turn all the locking lever of the bus coupler to be exchanged upwards.5. Pull the bus coupler forward.6. For mounting turn all the locking lever of the bus coupler to be exchanged upwards.7. To mount the bus coupler put it to the left periphery module and push it, guided bythe stripes, to the mounting rail.8. Turn all the locking lever downward, again.VIPA System SLIOBasics and mountingDemounting > Demounting bus couplerHB300 | IM | 053-1EC00 | en | 16-4926