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Operating Instructions BA 373-E66
Technical specifications subject to change
W. Bälz & Sohn GmbH & Co. Koepffstrasse 5 74076 Heilbronn Germany
Phone +49 (0)7131 15 00 0 Fax +49 (0)7131 15 00 21 www.baelz.de mail@baelz.de
Observe copyright protection DIN 34
5. COMMISSIONING
Compare the thrust of the actuator and the set travel with the valve data. Overload can result in severe damage to
the valve.
Pay attention to moving parts during mounting and adjustment. Risk of injury and or substantial material damage.
Attention, the linear actuator is factory-set to a stroke of 44 mm.
In case of a stroke >44 mm, make sure not to damage the adjusting lever [260] when manu-
ally extending the spindle!
Should it be necessary to adjust the stroke or if adjustment to a valve is required,
set the stroke as describe in chapter 6.
5.1 Setting for switching off in end positions
By default, the actuator is switched off in the end positions by force using DE switches. These are factory-set to
the force indicated on the identication label.
5.2 Test run
5.2.1 Checking the direction of rotation
● Move the actuator manually to its intermediate position or to a sufcient distance to the end position.
● In direction of travel CLOSE, switch the actuator on and watch the direction of rotation.
● If the direction of rotation is wrong, switch off immediately.
● Check wiring (jumpers). With 3-phase power supply, correct the phase sequence.
● Repeat the test run.
With wrong direction of rotation, damage to actuator and valve will occur, as switching off in end positions fails in
case of wrong direction of rotation.
5.2.2 Switching off in end positions
Risk of electric shock!
If the switches in the actuator are not factory-wired, check for proper switching off in end positions:
With the cover removed, the linear actuator may only be operated briey for test runs or when perform-
ing absolutely essential adjustments on electrical components, such as potentiometer, limit switches or
positioning electronics.
While performing this activity, there is unobstructed access to hazardous, live, exposed, moving and
rotating parts. Adjustments performed incorrectly or without applying the necessary caution may result in
death, serious injury or substantial material damage.
Any operation of the linear actuator with the cover removed for a purpose other than that described above
is prohibited.
Attention
Danger
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