MR MESSKO MPREC, Operating Instructions Manual

Page: 37 / 60

5 Mounting
37 BA5789879-01 EN
Figure 15: Connecting micro-switches in the pressure relief device with OD protective cover
1 Micro-switch 1 2 Micro-switch 2 (if not installed, the
outer cable screw connection is re-
placed with a dummy plug)
► Open standard protective cover [ ► Section 5.1, Page 27].
ð
The micro-switch(es) is (are) located on the counter bearing of the spring
assembly.
► Alternative: Open OD protective cover [ ► Section 5.2, Page 30].
ð The micro-switch(es) is (are) located on the inside of the protective cover.
Therefore, lay the protective cover on a stable surface with the opening
facing upwards for connecting the cables.
1. Remove the 4 cover bolts of the micro-switch housing and remove the
cover (crosshead screwdriver).
2. Remove an amount of sheathing from the double-insulated cable (cable
diameter 8...15 mm) appropriate for the wiring, strip off 7 mm of insulation
from the individual wire and cap off with ferrules.
3. Open the cable screw connections M20x1.5 (wrench size 24) on the outer
cable bushing and on the micro-switch housing.
4. Pull the cable ends loosely through the outer and inner cable screw con-
nections.
5. NOTICE! Do not kink the braided leads! Connect the signal lines and pro-
tective conductor to the 4 clamping screws in loose arcs in accordance
with the connection diagram.