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21
Removing the Drive Unit
Step-by-Step Instructions
1) Move probe into SERVICE position.
2) Make sure that no process fluid is leaking from the outlet
(I)
.
3) If required, remove sensor as described in section “Installing
and Removing a Sensor” on page 16.
4) Separate outlet
(I)
and rinse connection if required.
5) Turn coupling nut
(B)
counterclockwise (using wrench no. 1
included in the ZU 0680, ZU 0740 accessory if required –
see figure). Do not cant the unit and do not exert force.
6) Pull off the drive unit upwards
(E)
.
E
Wrench no. 1
included in accessory:
ZU 0680
ZU 0740
WARNING!
To separate the sensor lock-gate safely from the process,
make sure that it is disconnected from all process media and process pressure.
CAUTION!
Before working on the drive unit make sure that the sensor lock-gate is in
SERVICE position (see “Function Description” on page 10).
Be sure to follow the steps below in the correct order.
Take appropriate safety precautions against escaping process fluids.
I
B