5 Maintenance
Study the instructions carefully.
The items refer to the parts list and service kits section.
Handle scrap correctly.
Always use genuine Alfa Laval spare parts. Replace seals if necessary.
Step 5
-
Never stick your fingers through the valve ports if the actuator
is supplied with compressed air.
-
Always supply compressed air, before demounting the valve.
Reassemble valve according to illustration (1 - 5).
1. If tank flange:
Fit o-ring (76) on valve body (51) and mount valve body in tank
flange and tighten clamp (65)
(Maximum torque for clamp bolts:17 Nm/13 lbf ft).
OR if stub flange
Fit o-ring (91) in stub flange (92) and mount valve body (51) in
stub flange and tighten clamp (65).
(Maximum torque for clamp bolts:17 Nm/13 lbf ft).
2. Supply compressed air and mount the actuator together with
the internal valve parts.
3. Fit and tighten clamp (64).
(Maximum torque for clamp nut: 10Nm/7.4 lbf-ft).
4. Release compressed air.
5. Fit o-ring (89) on tube (88) and mount tube (88) in balanced
plug (94).
From February 1
st
2017:
Fit o-ring (89) in balanced plug (94) and screw tube (88) into
balanced plug (94). Tightend tube with 10Nm/7.4 lbf-ft.
A
B
C
TD449-249_1
A = On
B = Off
C = Air
29
Summary of Contents for Unique TO
Page 2: ......
