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4.6 Replacement of gas springs
4.6.1 Removal of Trendelenburg gas spring
•
Remove column casings and bellow (see section 4.3.4 page 15)
and (see section 4.3.5 page 16).
•
Mount the limiter bushings (see section 4.5.3 page 21) around the
gas spring piston rod. Run the motor carefully, so that the limiter
bushings stay in place and there is a gap between the motor
mounting pins. The limiter bushing locks out the gas spring when
the motor is turned off. The gas spring is traction type.
•
Support the mattress base to prevent it from falling when the gas
springs are removed.
•
Remove the upper hex nut (4) and joint screw (6).
•
Remove the lower gas spring locking rings and the motor bottom.
•
In order to remove the left gas spring, the lower part of the lateral
tilt motor must first be removed. See section 4.5.5 page 22.
4.6.2 Mounting of Trendelenburg gas spring.
•
Fasten the gas springs and motor to the top end (joint screw (6) and hex nut (4)).
•
Remove the mattress base support and angle until the lower ends of the gas springs can be fastened.
•
Run the motor to its minimum extension and angle the mattress base until the bottom of the motor can
be fastened.
4.6.3 Removal of side tilt gas spring
WARNING!
Before removing the gas spring, ensure that the gas spring piston rod is locked.
•
To lock out the gas spring, loosen the nut (1) on the end 2.5 turns.
Carefully test with the side tilt motor that the gas spring is securely
locked out.
•
Run the motor carefully until there is a gap between mounts.
•
Loosen the gas spring mounting screws(2) and remove gas spring.
4.6.4 Mounting of side tilt gas springs
•
Transfer the bushing (4) to the new gas spring. Turn the bushing
until the screw (2) fits into the bushing hole.
•
Carefully screw the bushing into place. When the gas spring piston
rod begins to move, adjust to the same length as on the old gas
spring. Be careful not to allow too much play in the gas spring.
•
Mount the gas spring into place, using the motor to assist.
•
Tighten the nut (1) on the end of the gas spring and ensure that the spring moves freely.
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Summary of Contents for PRACTICO
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