5 Maintenance
Maintain the valve and the regulator carefully. Study the instructions carefully and pay special attention to the warnings!
Always keep spare seal rings, rubber seals, bushes and actuator bearings in stock. Always use Alfa Laval genuine spare parts.
”Mushrooms” = Fastening connections on the end cap.
Step 5
Actuator size ø85 mm (NC/NO):
The actuator springs are not caged.
TD 403-118
Springs
Caution!
Step 6
End cap of actuator:
-
Never remove the end cap by using compressed air.
-
Always fit the end cap with the “mushrooms” turned outwards
and position it correctly before supplying compressed air to
the actuator.
Caution!
End cap
“Mushrooms”
TD 403-113
Recommended spare parts: Service kits (see 7 Parts list and service kits).
Order service kits from the service kits list (see 7 Parts list and service kits)
Ordering spare parts
Contact the Sales Department.
Valve seal rings
Valve bushes
Actuator rubber seals
Actuator bearings
Preventive maintenance Replace after 12
months
Replace when replacing
the valve seal rings
Replace after 24
months
Maintenance after
leakage (leakage
normally starts slowly)
Replace by the end of
the day
Replace when replacing
the valve seal rings
Replace when possible
Planned maintenance
-
Regular inspection
for leakage and
smooth operation
Replace when replacing
the valve seal rings
-
Regular inspection
for leakage and
smooth operation
Replace when they
become worn
-
Keep a record of the
valve
-
Keep a record of the
actuator
-
Use the statistics
for planning of
inspections
-
Use the statistics
for planning of
inspections
Replace after leakage
Replace after air
leakage
Lubrication
Before fitting
(use USDA-H1
approved)
-
Unisilcon L641(*)
-
Paraliq(*) GTE 703
-
Molycote 111(D)
None
Before fitting
-
Molycote Long term
2 Plus (
Δ
)
-
Molycote 1132(
Δ
)
(for aggressive
environment)
When replacing
actuator rubber seals
-
Molycote Long term
2 Plus (
Δ
)
-
Molycote 1132
(
Δ
) (for aggressive
environment)
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