Valve alignment, 1 visually checking the alignment – VICI Two position Standard electric User Manual

Page 13

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5.

VALVE ALIGNMENT

When the valve arrives from the factory installed on the actuator, it is accurately
aligned and ready to use. However, every time the clamp ring on the actuator is
loosened to readjust or remove the valve from the actuator, the valve and actuator
alignment must be checked to be sure that the internal ports and slots on the
rotor align properly.

5.1 Visually Checking the Alignment

It is important to note that the actuator actually drives only the rotor within the
valve body, and that the valve or valve/standoff assembly remain stationary with
respect to the actuator. To check the alignment, cycle the actuator from one
position to the other and observe the location of the rotor pin. The rotor pin should
come to rest against both sides of the cutout in the valve body. Figures 10-12
show the rotor pin in both positions (LOAD and INJECT). In Figure 10, the rotor
pin contacts one side of the cutout but does not touch the other side, indicating
that the valve needs to be aligned. (See Section 5.4, Alignment Procedure.) In
Figure 11, the pin does not touch the cutout on either side, indicating that the
actuator stroke must be adjusted. (See Section 6.1, Adjusting the Actuator
Stroke
.) Figure 12 shows the pin properly contacting both sides of the cutout.

END OF ROTOR PIN

IN EITHER POSITION

END OF ROTOR PIN

IN EITHER POSITION

END OF ROTOR PIN

IN EITHER POSITION

VALVE

BODY

VALVE

BODY

VALVE

BODY

CUTOUT

CUTOUT

CUTOUT

Figure 10

Adjust alignment

Figure 11

Adjust stroke

Figure 12

Proper alignment

11

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