Assembly; Fitting Position; Assembly With The Valve - Baelz Automatic BA 375-E42 Operating Instructions Manual

Motorized Rotary Actuator

4. ASSEMBLY

Make sure that the specifications on the nameplate correspond to those in
the order documents!
Attention

4.1 Fitting position

Do not mount rotary actuators "head down" below the valve. Allow for about 200 mm space
above the cover at the site of installation.

4.2 Assembly with the valve

Before assembly, check the rotary actuator for damage. Damaged parts should be replaced
with original spare parts. After assembly, check the rotary actuator for damage to the paint.
Touch up the paint if necessary in order to prevent corrosion.
For gate valves the recommended assembly position is the SHUT end position. For this,
turn the crank wheel on the rotary actuator clockwise until the mechanical stop of the SHUT
position is reached before assembling.
For ball valves the recommended assembly position is the OPEN end position. For this, turn
the crank wheel on the rotary actuator anticlockwise until the mechanical stop of the OPEN
position is reached before assembling.
Thorougly degrease the contact surfaces of the connecting flanges of the rotary actuator
and the valve. Lightly grease the valve shaft. Fit the coupling to the valve shaft and secure it,
keeping to the dimensions X and Y (see Fig. 2 and Table 3, below).
Lubricate gear teeth on the coupling thoroughly with acid-free grease. Fit the actuator so
that the connection holes in the actuator and the valve flange are aligned, possibly turning
the actuator on the coupling by one tooth. If necessary, turn the crank wheel slightly towards
OPEN or SHUT until the holes are aligned. Ensure correct alignment (if applicable) and
complete contact of the mounting faces. Fix actuator with screws (at least quality 8.8) and
spring washers; Tighten screws alternately and gradually up to the torque given in Table 3,
below.
A
coupling
grub screw
X
valve
Fig. 2: Coupling / Assembly of actuator and valve
W. Baelz & Sohn GmbH & Co. · Koepffstrasse 5 · 74076 Heilbronn · Germany · www.baelz.de
B
Y
Table 3. Dimensions for coupling and
tightening torques for screws
X max.
Connection
(mm)
F05 0,5
F07 0,5
F10 0,5
baelz 375-E42
Y max. T
size
A
(mm) (Nm)
3 4 x M6 10
3 4 x M8 25
3 4 x M10 50
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