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10. LA32 (MEDLINE

CARELINE

)

Freewheeling of piston rod

All LA32 actuators with freewheeling as well as with quick release have the designation W on the label.

The function causes the following:

• The piston rod can be pulled out with a thrust of approx. 300 N and it remains in the new position without declutching.

• The actuator cannot pull, but only push.

Functional test:

It must be possible to pull the piston rod out with a thrust of approx. 300 N and it must remain in the new position without releasing. If this is not

possible, contact your nearest LINAK dealer.

Built-in end-stop circuit (CS32)

In the LA32 actuators, with built-in CS32 A-, B- or C-PCB, the actuator is switched off at the end position or when overloaded.

LA32 actuator with:

• The CS32 A is standard IPX1 and is connected to a HB41 handset with a telephone plug.

• The CS32 B is standard IPX5 and is connected to a HB41 handset with a DIN plug. CS32 B is also available in IPX6.

• The CS32 C is standard IPX1 and is connected to an external contact or control. See Figure 6.7.

Usage:

• Duty cycle: Max. 10% or 2 minutes continuous use followed by 18 min. not in use

• Ambient temperature + 5° to + 40° C

• For use with LINAK control boxes CB8, CB12, CB14 and CS16 PCB or internal CS32 PCB

• Should the LA32 be used with a non LINAK control unit, please ask the nearest LINAK representative for further details

• Approvals: IEC 60601-1:2005, 3

edition, ANSI / AAMI ES60601-1:2005, 3

edition and CAN / CSA-22.2

No 60601-1:2008 approved

The LA32 actuator is a powerful actuator that can be supplied with a ball screw

spindle to give outstanding performance. The ideal choice for a wide range of

applications including adjustment of hospital beds.

The LA32 actuator has many special options including a safety nut, splines, quick

release (F) and an optional protection up to IPX6 standard.

Reed-switch:

The Reed-switch gives a number of pulses for each rotation of the motor. These pulses

are used to calculate the piston rod’s position as well as to control several actuators

running in parallel.

Your nearest LINAK dealer can inform the number of pulses per stroke length.

Regarding Reed-switch connection, see Figure 6.10.

Protective cap

“Crimped” piston rod eye Piston rod without eye

Recommendations:

• As there is friction in the spindle/gear system, a load of 800 N is necessary to start the lowering function with the LA32F.

The actuator will use up to 3.5 Amp. in inward direction unloaded due to a brake system that is fitted as standard on all types of the LA32F.

• Release of the QR is only possible with a Bowden cable release force 25–60 N.

• The piston rod eyes are “crimped” in place and cannot be screwed loose.

• Piston rods without eyes have not been tested

• LA32 with quick release and freewheeling function must not be sold to new products

Maximum load in pull = 2000N

LA32 actuators for patient hoists are marked with a label to ensure the user is aware that it is not permitted to handle the patient hoist

by pulling the actuator or otherwise expose it to side forces.

...to be continued

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DK Digital CDB-700 Manuale Utente Pagina 39

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