Chapter 8 corrective maintenance, 1 introduction, 2 cxt-e electronic control valve – AERCO SWDW68 U-Tube Double-Wall Heaters w/ECS User Manual
Page 55: He- 111 − corrective maintenance
HE-
111 − CORRECTIVE MAINTENANCE
Rev B Mar 2013
8-1
CHAPTER 8 CORRECTIVE MAINTENANCE
8.1 INTRODUCTION
This chapter documents AERCO’s recommended corrective maintenance procedures for the packaged
assembly of the DW-series heat exchanger, the CXT-E Control Valve and the Electronic Control System
(ECS). This chapter is organized as follows:
• CXT-E Control Valve (8.2)
• Electronic Control System (8.3)
8.2 CXT-E ELECTRONIC CONTROL VALVE
The corrective maintenance procedures for the CXT-E Control Valve are organized as follows:
• Valve Shaft Seal Retainer Replacement (8.2.1)
• Valve Disassembly (8.2.2)
• Valve Reassembly (8.2.3)
• Actuator Replacement (8.2.4)
• Linkage Assembly Replacement (8.2.5)
Refer to the following drawings and parts list tables to perform the indicated operations on the AERCO
Type CXT-E Actuator and Valve Assembly:
Size
Figure
Table
1.00” to 2.00”
2.50” to 4.00”