AERCO Packaged WaterWizard Steam-to-Water Heater - Manual (Page 31)

1B+ II Water Wizard Water Heaters
HE-110
Installation, Operation & Maintenance Manual OMM-0063_0C
MC2: 07/26/13 Page 31 of 50 AERCO International, Inc. • 100 Oritani Dr. • Blauvelt, New York 10913 • Phone: 800-526-0288
10.4. ANTICIPATOR CHECK VALVE DISASSEMBLY
To disassemble the Anticipator Check Valve, proceed as follows:
10.4.1. Special Tools Required
• Torque wrench for 5/8” nuts.
• A block and tackle or ratchet hoist is recommended for lifting off the Heater top head and
shell, or for lifting and moving the Heater.
Anticipator Check Valve Disassembly Instructions
1) Shut down the Heater in accordance with Step 10 under OPERATING PROCEDURES.
Manually (and carefully) open a relief valve to relieve any pressure in the Heater shell.
Figure 11 – Model B+II Heater Control Box
2) Disconnect the union in the Hot water outlet piping (the one located beyond the outside
diameter of the Heater top head). Then remove the Nuts (51) and the Outlet Flange (31) and
outlet piping.
3) Separately, lift the Spring Plate Assembly (33), the Gasket (32), the Spring (34), the Washer
(35), and the Valve Plug (35).
4) Clean all parts and gasket surfaces thoroughly, and repair or replace any part necessary to
make the Check Valve operate properly (open on water flow through the Heater).