HORA MC250/230, Operating Manual, Page: 15 / 32

4 Assembly
Linear actuators MC250 • MC253 • MC500 • MC503
Operating Manual
Version 2.1 - March 2011 15
ATTENTION
Damage to the equipment due to damaged wiring!
When removing the cover it is possible to tear or damage the wiring in the cover.
• Remove the cover carefully.
3 Remove the cover (201) carefully.
4 Disconnect the plug connection between motherboard (110) and cover (201) .
 Proceed as follows to replace the cover:
1 Insert the cables previously removed into the plug connector in the motherboard
(110) .
Take care not to damage the grooves in the plug connector and bush.
Hint: The cover (201) can be fitted in four different positions offset by 90° respectively.
This enables convenient laying of the connecting cable in the event of different
installations of the linear actuator.
2 Put the cover (201) on and press it into place with moderate application of force.
3 Check the correct fit of the cover to ensure the tightness of the actuator casing.
4 Lock the cover (201) . Use a screwdriver (34) to turn the rotary know clockwise
through 90° as far as the stop.
4.5 Connect the electrics
WARNING
Danger of death if carried out by unqualified personnel!
Connection of the electrics by unqualified personnel may cause death, serious
physical injury or considerable material damage as a result.
• Ensure that this work is only carried out by qualified personnel.
 1.3 Personnel on page 5
WARNING
Electric shock due to live components!
Once the power supply has been switched on, there is risk of electric shock due
to live components.
• Prior to starting work ensure that the actuator is disconnected safely from the
mains power supply.
• Secure against unauthorised switching-on.
 Proceed as follows to prepare for the power connection:
1 Ensure that the power supply concurs with the data on the linear actuator rating
plate.
2 Design the cable profile in accordance with the actuator power and the
necessary cable length in order to avoid operating faults.
3 Lay the mains cables for a power supply of> 48 V separately from the signal and
control cables.
If the cables are laid in a common cable duct, screened control cables must be
used.