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Les langues disponibles
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ENGLISH
Functional Description
LK 950 is a series of compact actuators designed to motorize
rotary mixing valves. The actuator can be operated by a con-
troller with a 3-point SPDT output. LK 950 fi ts most rotary
valves. Alternative mounting kits and an additional auxiliary
adjustable switch can be supplied as option.
The actuator can be mounted in any position except below the
valve. Thanks to its small size and compact form the LK 950 fi ts
most installations.
Technical Data
Voltage*
Power consumption*
Dimensioning*
Ambient temp.
Angle of rotation
Torque*
Operation time*
Direction of operation
Position indication
Manual override
Electrical connection*
Sound level
Storage temperature
Protection type
Protection class
Type Approval certificate
*= depending on model
A
B
C
Installation
1.
Turn the spindle of the valve A counter clockwise to the end po-
sition (OPEN or CLOSED). Remove the handle supplied with
the valve body from the valve spindle.
2.
Screw the anti-rotation stop B in a convenient hole on the valve
(if necessary remove an existing screw).
3.
Slide the linkage C over the valve spindle.
4.
Place the actuator D onto the linkage C and if necessary rotate
it slightly clockwise until the antirotation stop B engages in
the slot of the actuator (the actuator is supplied in the anti-
clockwise position).
5.
Turn the scale E into the position relevant to the requested
function (OPEN/ CLOSED) and place it onto the actuator.
2
230 VAC 50/60 Hz
24 VAC 50/60 Hz,
24 VDC/AC 50/60 Hz
1.5 - 3.5 W
1.5 - 3.5 VA
Min. 0°C/Max. +50°C
90°, electrically limited
5/10 Nm
35/70/140/280 s
Selectable
Reversible scale
Disengagement of gears
Cable 1.5 m, 3 x 0.75 mm²
Max. 35 dB(A)
-10°C ... +80°C
IP 40
II (Double Insulated)
III (SELV)
(See Declaration of conformity)
D
The actuator is mounted directly onto the valve spindle with a
screw. An anti-rotation bolt is screwed onto the valve. The angle
of rotation is limited to 90°. When the actuator reaches either end
position the voltage supply is interrupted by limit switches. The
actuator can be put into manual mode by turning the button on the
housing cover which will disengage the gears. The actuator can
now be put in any position by turning the handle on the front and
this position is indicated by means of a reversible scale.
Wiring diagram
Warning!
Before starting installation work the power
supply must be disconnected. Make sure to
adhere to valid safety regulations.
E
F
G
6.
Place the handle F onto the actuator ensuring that the arrow
points to the left end position of the scale. Tighten the whole
unit by means of the screw G.
7.
Using a screwdriver (No. 3) turn the disengaging button on
the housing cover from «A» to «Hand Symbol» position and
rotate the valve by means of the handle F from one end position
to the other. It is important that the actuator can be moved from
one end stop to the other (90°).
8.
Connect the actuator to the power supply.
9.
Turn the disengaging button back to the«A» position and the
actuator will turn in the required position.
Risk of personal injury!
~
N
L1
0
1 2
3
3-point control
LK 950 3-punkt
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