Welker INFLOW, Инструкция по установке, эксплуатации и обслуживанию

Страница: 25 / 41

Using Pipeline Product (If Not Using Hydraulic Fluid or an Auxiliary Gas)
24.
Ensure that vent/relief valve B is connected to a customer-supplied recovery system. Valve B should remain closed.
25.
Slightly open isolation valve A to ensure that pipeline pressure is applied to the internal shaft piston ( Figure 1 ).
Failure to ensure that adequate pressure is applied to the internal shaft piston prior to retraction could result in unexpected
retraction of the insertion shaft, which could damage the unit or injure the operator.
26.
Remove the hex bolts from the top of the lock collar ( Figure 3 ).
27. Close isolation valve A ( Figure 1 ).
28. Slowly open vent/relief valve B ( Figure 1 ). This will relieve pipeline pressure from the internal shaft piston, allowing the
insertion shaft to begin retracting from the pipeline. If pipeline pressure is not sufficient to push the insertion shaft out
of the line, the insertion shaft may be retracted manually or by applying auxiliary gas to the vent outlet.
Once the insertion shaft begins to retract, do not open the valve any further. The insertion shaft should be retracted slowly and
smoothly. Opening the valve too quickly or too much may cause the insertion shaft to retract from the pipeline too quickly and
may result in damage to the unit.
29. Once the insertion shaft is fully retracted, close vent/relief valve B, and then close the pipeline isolation valve to isolate
the unit from pressure ( Figure 1 ).
30.
Continue to step 31 to complete retraction.
Completing Retraction
31.
Loosen the cap screws on the sides of the lock collar, and then slide the lock collar down onto the alignment nuts on the
top cap.
32.
Tighten the hex bolts to secure the lock collar to the alignment nuts on the top cap to prevent the insertion shaft from
moving while the unit is being removed from the pipeline.
33.
Slowly open vent/relief valve B and isolation valve A to bleed any pressure or liquids trapped in the lubricator body
(
Figure 1 ).
34.
As necessary, ensure that the customer-supplied recovery system has been disconnected from vent/relief valve B
(
Figure 1 ).
35.
If complete removal of the inFlow™ ACE from the pipeline is desired, the inFlow™ ACE is now ready to be removed
from the pipeline isolation valve for maintenance or to be relocated.
36.
If the inFlow™ ACE will remain secured to the pipeline after retraction, ensure that the lock collar has been properly
secured to the alignment nuts on the top cap.
25
IOM-161 MODEL: INFLOW™ ACE WITH AI CONTROL™ REV: D 13839 West Bellfort Street, Sugar Land, TX 77498 welker.com Service Department 281.491.2331