9
4.3.2.
Bottom-‐pull mounting method
When a box cooler for bottom-‐pull mounting is
supplied, the tube bundle is mounted from below.
For that purpose a hatch is to be made in the ship's
hull through which the tube bundle is brought into the
sea chest (see fig. 4).
In that case two frames are supplied:
§
Frame 1 is the mounting frame which is to be
welded into the top plate of the sea chest (
item 1
of fig. 9a
)
§
Frame 2 is used as an interface, to bolt the tube
bundle to the mounting frame
(
item 2 of fig. 9a
)
Fig. 9a shows the collar bolts and fig. 9b the standard
bolts for the water cover.
1)
Weld the mounting frame (frame 1) in position
according to the instructions of section 4.2.
2)
Take the tube bundle, frame 2, the gasket and the
mounting materials out of the wooden case and
inspect and clean the parts according to the
instructions of section 4.3.1.
3)
Position the gasket that is used between frame 2
and the tube sheet on top of frame 2. Make sure
the gasket and the gasket faces are clean.
Do not use sealant, grease, glue or any other
agent when installing the SBR gasket.
4)
Fasten frame 2 to the tube sheet with the
supplied collar bolts.
5)
Position the gasket that is used between the
mounting frame and the tube bundle on top of
the tube sheet.
6)
Lift the tube bundle by means of four M16
eyebolts (see fig. 2) from below into position. See
lifting method "1" of fig. 10c.
7)
Fasten the sub-‐assembly (tube bundle with
frame 2) to the mounting frame by means of the
supplied M12 bolts.
Refer to section 4.4.4 for tightening torques.
8)
When the collar bolts are tightened, the water
cover can be mounted.
Continue with section 4.4.
Figure9a. Bottom-‐pull mounting arrangement
with collar bolt.
Figure 9b. Bottom-‐pull mounting arrangement
with standard bolts.
