AMOT 10GEF, Operation And Maintenance Manual, Page: 31 / 80

31
Electric Actuator
OMMG00012 Rev 12 – NOV 2019
1. Ensure that there is no flow through the valve before proceeding.
2. Switch off power to the actuator.
3. Use the lever and handwheel to rotate the valve to one end of stroke. It
does not matter which end.
4. Look at the coupling (item 5, Fig 10, page 30) and note what position it
is in relative to the valve body. If a letter ‘R’ or a vertical line is present
on the coupling, use that for ease of reference.
5. Look at the top of the actuator, and note the position of the indicator
disc. This will be re-aligned later to correspond with the rotor position.
6. On versions 2GEF and 4GEF, slacken four bolts (item 4, Fig 10, page 30)
to release the actuator from the mounting plate. For all other versions,
slacken four bolts (item 1, Fig 10, page 30).
CAUTION
If the valve is mounted with the actuator below it, take great care in
slackening these bolts. Once freed, the actuator will drop from the
valve.
7. Completely remove the bolts (section 6) and lift the actuator off the
coupling so that it is completely disengaged.
8. Re-orientate the actuator to the desired position and lower it back onto
the coupling, ensuring that the coupling has not rotated from the
previously noted position.
9. Re-fit the bolts (with Loctite 2400 on their threads).
10.Tighten bolts to the value stated in Table 3, page 36.
11.Slacken the four screws which hold the ring around the viewing window.
Lift the ring off and carefully lift off the viewing window.
CAUTION
The edges of the metal indicator disc can have sharp edges. Take care
when rotating the disc.
12.Rotate the position indicator disc to match the rotor position, as noted
earlier.
13.Ensure that the sealing rings are still present and re-fit the ring.