AERCO CXT-E Retrofit Kit - Manual (Page 14)

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 14 of 76
2.5 CONTROL VALVE ACTUATOR REMOVAL
The Water Heater may currently be equipped with a Pneumatic, Self-Contained or Electro-
Hydraulic Control Valve Actuator. Therefore, refer to the appropriate section for the type of
Control Valve Actuator currently installed.
NOTE
Following removal of the existing Control Valve Actuator, AERCO recom-
mends that the Valve Seat and Packing be replaced using the appropriate
items included with the Retrofit Kit. If the Valve is relatively new (less than
1 year) and is currently equipped with a Pneumatic or Electro-Hydraulic
Actuator, replacement of these items may be omitted at the discretion of
the user. However, if the Valve is currently equipped with a Self-
Contained Actuator, replacement of these items is mandatory, since the
Valve must be virtually disassembled to remove the installed Actuator. A
new Valve Top (plus other items) must also be added to Self-Contained
Valves before an ECS Actuator and Linkage Assembly can be installed.
2.5.1 Pneumatic Control Valve Actuator Removal
Refer to Figure 2-4 and remove the Pneumatic Control Valve Actuator as follows:
1. Disconnect the compression fitting connecting the control air line from the Actuator Top.
2. Loosen the hex nut under the indicator disk.
3. Insert a 1/8 inch steel rod in the hole provided in the upper shaft. Hold the rod to keep the
upper shaft from turning when performing the next step.
4. Using a pair of pliers, grasp the lower shaft and rotate it counterclockwise to separate it from
the upper shaft. Use care to avoid scratching the lower shaft.
5. Remove the two 3/8-16 cap screws securing the Pneumatic Actuator to the Valve Body.
Remove the entire Actuator from the Valve.