24
JMNC Operating Instructions
5 Mounting and Dismounting
5.4
Dismounting the Rotational Speed
Monitoring Device
Danger of electric shocks!
Mounting and electrical connection may only
be carried out by qualified electricians.
Before making the electrical connection,
disconnect the plant and prevent it from
being switched on again.
Cover live parts in the vicinity to prevent any
contact.
1. Before dismounting the device, disconnect the plant
and prevent it from being switched on again.
2. Make sure that the plant is free of any voltage.
3. Loosen the two screws (
12
) on both sides of the rota-
tional speed monitoring device (
9
)
4. Slowly pull the rotational speed monitoring device (
9
)
off the base (
10
).
Attention!
We recommend you to pull the rotational
speed monitoring device (9) straight off the
base (10), because the plug contacts (11)
could break off.
5. Loosen the cores of the terminals (
14
)
.
6. Loosen both fastening screws and remove the de-
vice.
7. Plug the rotational speed monitoring device (
9
) back
onto the base (
10
) and fasten the screws.
Attention!
Make sure that the rotational speed monitor-
ing device (9) is plugged in the correct posi-
tion!
Take care that the plug contacts (11) are
plugged into the terminal strip of the base
(10).
Fig. 5-6: Dismounting
rotational speed
monitoring device (
9
)
base (
10
)
screws (
12
)
