Mvac M85 Manuel D'instructions page 7

INSTALLING INLETS
When installing your vacuum inlets, we recommend that the principle of electric
polarity be taken into account. Ensure that the wire connected onto contact A
on inlet 1 is the same as that connected to contact A on inlet 2, and so on. Do
not cross, reverse or interchange wires.
A
B
A
inlet 1
B
inlet 2
A
B
A
inlet1
B
inlet 2
5
Installation