Ottobock 21Y12 Gebrauchsanweisung Seite 12

Disassemble the screw valve and apply 617H46 Bonding Agent to the
contact surface of the lower screw ring. Position the lower screw ring.
Slightly lubricate the sealing ring of the upper screw ring with 633F11 Sili-
cone Grease. Tighten upper screw ring with attached sealing ring (fig. 8).
For tightening the lower and upper screw ring the Pin Wrench can be used.
NOTICE
Risk of damage to the valve. The valve is not intended for the fixation
of the inner socket and frame socket. It has no holding function. Only
attach the valve to the test socket or to the flexible inner socket.
Grind the laminate of the socket frame in the valve area only until the
groove for the cosmetic sock on the upper screw ring lies free with the
inner socket inserted.
Put the socket frame and inner socket together and screw in the upper
valve piece.
If the valve has become dirty, remove the 21Y145 Upper valve piece using
a pin wrench. Clean the individual components and reassemble.
3.2 Screw valve set 21Y13
Flatten the plaster positive in the valve area, apply talc and pull on a
moistened 99B81 PVA Bag. Reinforce the PVA Bag in the valve area with
672B4 Polyethylene Adhesive Tape.
Remove the upper valve piece from the screw valve. Lubricate the inside of
the small screw ring with 633F11 Silicone Grease and mount the lamina-
tion dummy. Lubricate the distal surface on the plaster positive in the area
of the reinforced PVA bag with silicone grease (fig. 9).
Attach the small screw ring with the lamination dummy to the plaster posi-
tive using the 503S3 Screw provided (fig. 10). Seal the screw head area
with 636K8 Plasta Tape.
Cut 616G6 Dacron Felt as reinforcement material and pull it on the plaster
positive. Weld the edges to each other and remove the excess material
covering the screw valve (fig.11).
Pull on a double layer of 623T3 Perlon Stockinette. Tie off the first layer
in the screw valve's groove (fig.12). Reinforce the area around the socket
brim with carbon. Next, pull on another double layer of Perlon stockinette
and tie it off in the screw valve's groove.
12 | Ottobock