Samson 3595, Монтаж и эксплуатация, Страница: 53 / 76

EB 8079 EN 9-5
Servicing
Gasket
U-ring
Gasket
Fig. 9-1: Arrangement of gaskets
Insufficient seal performance due to incor -
rect mounting.
Î
When a U-ring is used, insert it into the
groove on the bottom of the top cage
part. Press in the ring evenly over the en
-
tire circumference. The open side of the
U-ring faces towards the front face of the
bottom (see Fig. 9-2).
Fig. 9-2: Aligning the U-ring
9.4.2 Replacing the packing
1. Unthread the nuts of the packing gland
from the valve bonnet.
2. Remove the packing gland and packing
follower.
3. Pull the plug stem together with the plug
downwards out of the valve bonnet.
4. Pull all the packing parts out of the pack-
ing chamber using a suitable tool.
Risk of damage to the inside surface in the
valve bonnet due to the use of unsuitable
tools.
Î
Use a wire or a similar object made of a
material softer than that of the valve bon
-
net to pull out the packing rings. This
prevents scratching or scoring of the
sealing face of the packing chamber.
NOTICE !
NOTICE
!