Cameron Dynatorque IOMSRD Руководство - Страница 2

Просмотреть онлайн или скачать pdf Руководство для Блок управления Cameron Dynatorque IOMSRD. Cameron Dynatorque IOMSRD 7 страниц.

IOM FOR DYNATORQUE™ SPRING RETURN MANUAL OVERRIDE (SRD TYPE)

The SRD is unidirectional: The same SRD unit may be used for either, but not both, "Fail CCW"

(counterclockwise rotation as viewed from above) or "Fail CW" (clockwise as viewed from above) with

proper key arrangement and assembly.

Typical Example: Overrides for use with fail closed (CW) actuators:

[Although the pictures show a CW (clockwise) fail closure; the same

mirrored steps can be followed for a CCW (counter-clockwise) fail

closure.

Step 1. Prior to installation in the valve and actuator system, loosen

(back-out) both SRD travel stop bolts from the main housing

approximately six to eight turns (Warning: rotating the stop bolt more

than six to eight turns may allow the worm wheel and worm to

disengage during the next phase of Step 1). Rotate the input shaft

CW which in turn rotates the override output clockwise until the end

of the key slot is just past centerline. (Ref Photo 1).

Step 2. Install the SRD override in the valve and actuator assembly

making sure that the valve and actuator are in the closed position.

Note: Mounting holes on some SRD overrides break into the

housing cavity creating a grease leak path. The use of Teflon

tape is recommended for all valve side bolt installations.

Step 3. Set the pneumatic actuator position stop for full closed

position. The actuators position stop will always be contacted for the

full closed position during normal operation, not the SRD's stop.

IMPORTANT NOTE: The actuator stops (NOT the SRD stops)

must be set to establish the full clockwise and

counterclockwise travel of the actuator. The SRD stops should

be set so that they are not subject to the rotational force

generated by the actuator.

2076 NORTHWOODS DR  MUSKEGON, MI 49442

PHONE (231) 788-7025  FAX (231) 788-7030

www.dynatorque.com

ISO 9001:2008 CERTIFIED

IOMSRD

Revised: 4-15-11

Page 2 of 7