Alfa Laval AFPX 617XGV-14/74CG, Instruction Manual

Page: 80 / 154

3.3 Intermediate Service (IS), check points 3 Dismantling/Assembly
80
3.3.12 Valve plugs
Poor sealing between the valve plugs (1) in the
operating slide and bowl body may prevent
complete closing of the bowl.
Examine the sealing surfaces (2) of the bowl body
in contact with the valve plugs. Remove any
marks and lime deposits with a very fine grain
emery cloth.
Remove all the valve plugs. Tap in the new plugs.
Correct height of plugs: 16 mm.
3.3.13 Worm wheel and worm;
wear of teeth
As described in ‘‘2.4.1 Worm wheel and worm;
wear of teeth” on page 29 .
3.3.14 Inlet pipe and outlet paring
disc
Damage to the threads of inlet pipe and the
surfaces of distributing cone, bowl hood, gravity
disc and paring chamber top part may cause the
paring disc to scrape against the paring chamber
cover even if the height of the outlet housing has
been adjusted correctly.
Screw the outlet pipe into the paring disc and
check that the outlet pipe turns easily.
Left-hand thread!
G
0
67
06
4
1
1. Valve plug
2. Bowl body sealing surfaces in contact with the
valve plugs
G0
5
8
1
4
G1
Check the threads of the inlet pipe and paring disc