5 Maintenance
Study the instructions carefully.
The items refer to the parts list and service kits section.
Handle scrap correctly.
Always use Alfa Laval genuine spare parts. Replace seals if necessary.
Step 4
Recommended torqu
e values for fitting upper and lower plug parts
Dimension
Torque (Nm)/(lbf-
ft)
38 mm/DN 40
51 mm/DN 50
5/(3.7)
All others
20/(14.8)
off
1
2
TD 449-332_1
A
1
2
1
TD 449-333
If upper seat l
ift available
If no upper sea
t lift available
A=air
Step 5
1. Place o-rings (71) and fit nozzles (72 + 73) and flushing tubes
(70), if present.
2. Place o-ring (78) and fit lip seal (77) and o-ring (76) (do not twist
the o-ring) and press it gently into the groove (lubricate with
Klüber Paralique GT703)
TD449-144_2
Lubricate with Klüber Paralique GT 703
TD 449-334
32
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