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11. LA31 (MEDLINE
®
CARELINE
®
The LA31 is a compact, quiet and powerful actuator designed for a variety of applications
in the MEDLINE
®
& CARELINE
®
segment, such as hospital beds, couches and nursing
home beds.
The standard LA31 actuator features known parts such as piston rod eye with slot,
and comes in different variations with e.g. fast motor, hall positioning and emergency
lowering. The LA31 actuator has exchangeable cables and is ideal in combination with
OpenBus™ control boxes.
The LA31 actuator has an ingress protection of IPX6 and is available in version with up
to 6000N in push and 4000N in pull.
Usage
• Duty cycle: Max 10 % or 2 minutes continuous use followed by 18 minutes not in use
• Cycles: The LA31 life cycle test has been performed with a stabilised power supply
(10 % duty cycle) on a 200 mm stroke actuator at max. load for 10,000 cycles
(at ambient temperature)
• Ambient temperature: + 5 °C to + 40 °C
• Approvals: IEC 60601-1, ANSI/AAMI ES60601-1 and CAN/CSA-22.2 No 60601-1
To avoid damage to the actuator
When the application is in the “rest” position there should be no load/tension on the actuator.
If electrical end stop fails to function the actuator will continue to retract or extend until mechanical end stop is reached.
The application of the customer must be able to obtain or withstand an actuator with failing electrical end stop.
Minimum length of actuator reaching mechanical end stop: nominal BID - 7 mm.
Maximum length of actuator reaching mechanical end stop: nominal BID + nominal SL + increase + 7 mm.
• LA31 with internal quick release types A and B is not designed for use in pull.
• The necessary release force on an actuator with 5mm pitch is 75 kg for 6 mm pitch = 50 kg.
• LA31 with quick release is always with brake (push).
• The flexible back fixtures (05 or 06) must be standard when the LA31 is equipped with quick release.
• When operating the QR function of QR types A and B, the QR must be activated all the way down. Otherwise the QR will no longer function.
Mounting of the release cable:
Fig 1. Removal of QR cover.
Fig. 3. Replacement of QR cover.
Fig. 2. QR cover removed.
Use only light pressure near the snap-on
flanges to lift the cover.
Here the cover is removed and the cable
mounting can be seen.
Use only a small amount of pressure to
replace the QR cover.
Mounting bracket instructions:
Application mounting bracket
Piston rod
Note the recommended design for the mounting bracket hole.
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