Bucher C-LRV Series User Manual

With Handterminal, see
Page 37, Section 3.3
C−LRV lift control valve Installation and commissioning
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300−I−9010212−E−10/08.08
4.3.10 Setting the mechanical null point
The null point is factory−set.
This can be checked with the Handterminal (or PC). If, on commission-
ing, the reading is outside the range ±0.05V, then the null point must be
reset.
Setting the null point
1. Close the ball valve
2. Connect the Handterminal to the C−DELCON and press key 3 on
Handterminal => null point or feedback value will be displayed
3. Using a 3mm Allen key, slacken the adjusting/clamp screw (14) a
little
4. Remove Allen key (it has a magnetic influence)
5. Hold the feedback sensor by the plug and move it axially until the
feedback reading is less than ±0.05V
6. Tighten adjusting/clamp screw (14)
7. Return to RUN mode by pressing the ↑ and ↓ on the Handterminal
simultaneously.
8. Open the ball valve.
The null point is now correctly set
Checking null point after maintenance work
The error memory of the C−DELCON should be checked each time
maintenance work is carried out. If there is a warning with regard to null-
point deviation or, if the actual value for the null point is outside the
range ±0.2V, then the null point has to be reset.

Bucher C-LRV Series Specifications

General

Brand	Bucher
Model	C-LRV Series
Category	Control Unit
Language	English