AERCO CXT-E Retrofit Kit - Manual (Page 36)

ECS and CXT-E Retrofit Instructions Kit # 27004-TAB
Technical Instruction Document TID-0141_0A
12/30/2014 AERCO International, Inc. • 100 Oritani Dr. • Blauvelt, New York 10913 • Phone: 800-526-0288 Page 36 of 76
4.1.1 Linkage Assembly Installation
Remove the Linkage Assembly from the Retrofit Kit and install as follows:
1. Check to ensure that the correct Linkage Assembly and Adapter are provided for the valve
size being retrofitted (Figure 4-1). Also, ensure that the Linkage pin is inserted in the correct
location for this valve size.
CAUTION
It is imperative that the Gasket provided with the Linkage Assembly
be installed between the Valve Top and Linkage Assembly. Failure
to do so will void the equipment warranty.
2. Refer to Figure 4-2 and position the Gasket and Linkage Assembly on the Valve Top as
shown.
3. Secure the Linkage Assembly to the Valve Top using the two 3/8-16 Hex Head Bolts
provided.
4. Install two 1/4-20 Hex Nuts (1 to 3 inch Valves), or two 3/8-16 Hex Nuts (4 inch Valve) on
the Valve Shaft (Figure 4-2).
5. Rotate the two Hex Nuts clockwise towards the lower end of the Valve Shaft.
6. Install the Indicator Plate on the Valve Shaft with the curved end facing upward as shown in
Figure 4-3.
7. Attach the Valve Shaft to the Linkage Adapter by rotating the Shaft counterclockwise (as
viewed from above). If the Valve Shaft cannot be turned by hand, use an open-end wrench
to turn the “double-nuts” on the Shaft until it engages the Linkage Adapter threads.
8. Press down on the Valve Shaft to compress the Pilot Spring in the Valve Body.
9. Raise the Indicator Plate so it is contacting the bottom of the Adapter and observe the
position on the Linkage Scale. Rotate the Valve Shaft as necessary until the raised Indicator
Plate is aligned with the “0” (zero) marking on the Linkage Scale.
10. When properly aligned, raise the Hex Nuts on the Valve Shaft by rotating them
counterclockwise. Position the Hex Nuts so they are snug against the Indicator Plate.
11. Proceed to section 4.1.2 to install the Actuator Assembly.