User's Manual

Page 69 of 194
Manual lowering:
The picture to the right illustrates the manual lowering procedure.
In case of a power failure, it is possible to mechanically lower a patient placed in a patient lift.
When turning the manual lowering handle clockwise, the actuator can be moved fully inwards.
Spline:
• Required minimum push load 200 N on the actuator to allow inward movement (otherwise the spline can be activated) (picture 1).
• Required activation pull force during inward operation: <100 N to activate the ratchet spline to avoid squeezing situations (picture 2).
• For QR versions: Force required to manually activating spline (actuator not in operation): Static pull force = 300 - 550 N.
For manual pull out (extend) of the inner tube (picture 3).
Push:
200 N
(Ratchet spline for HP and PL versions)
Pull:
< 100 N
(Ratchet spline for HP and PL versions)
Pull:
300 - 550 N
(Ratchet spline for QR versions)
Damper function:
The LA40 QR can be equipped with an internal damper mechanism. The damper inside the LA40 provides a slower lowering speed, compared to the
normal QR lowering speed which is faster.
When the QR is activated, with the existence of a certain amount of push load, the spindle rotation speed will engage the Damper mechanism and
will start a slower lowering.
The speed when the damper is activated will be load dependent and the damper is only acting as an extra friction when QR-lowering is activated.