Assembly procedure for transition coupling
Transition couplings are used where the ceiling hoist must be led across from a traverse system to
a fixed rail. A MRS transition coupling is supplied for rail H62 CC/OC and rail H142 OC. This means
that traverse rails and fixed rails must be specially ordered for the transition coupling. The tran-
sition coupling is fitted to specially adapted rail profiles which are attached to standard brackets
which extend below the ceiling, and can be fitted to both wood and concrete structures.
MRS transition couplings and rail profiles are ordered and supplied separately.
Figure 67. Transition coupling
Transition couplings are designed
such that the traverse can move both ways from the transition coupling point. It will however al-
ways automatically connect to the fixed rail system and needs to be released using the pull cord
before you can move it onwards.
Transition couplings are prevented from running out of the hoist during use. The mechanism
which controls transition coupling direction is manually operated via the pull cord. The pull cord
is located on the traverse boom (the moving part of the traverse). It is important to activate the
transition coupling before a motor or trolley is in the transition coupling or is run towards its. The
mechanism can otherwise become stiff and /or jam
It is important, before fitting the transition coupling, to map the position of the traverse and the
transition coupling point, to avoid conflicts with other installations, door openings and similar.
See Figure 67 for minimum installation dimensions.
General considerations before fitting:
• Before fitting, the fitter must make sure that the ceiling structure has, in all cases, been dimen-
sioned to carry the load of the system and the SWL for which the system is intended.
• It is very important that there are spaces for ceiling fasteners all the way up to the transition
coupling, both on the fixed part and immediately above the transition coupling point on the
side of the traverse or primary rails. This is to prevent downward flexure and height differences
at the transition coupling point.
Rev E 10/2011
Chapter 4 – Mounting of Molift Rail System
Page 89 of 100
Assembly procedure for transition coupling
Summary of Contents for Rail System
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