Watts AERCO SmartPlate SP23 - Page 81

SmartPlate Installation, Operation & Maintenance Manual
CHAPTER 8 – CORRECTIVE MAINTENANCE
OMM-0069_0H • SP-100 • 1/30/2020 Technical Support • (800) 526-0288 • Mon-Fri, 8 am - 5 pm EST Page 81 of 134
ELECTRONICS MODULE REPLACEMENT Instructions
socket head screws removed in step 4.
7. Refer to Figure 8-23 and ensure that the three (3) DIP switches on the replacement
Module are all in the OFF (down) position.
8. Reconnect the power and control signal wire leads to the Electronics Module.
9. Turn ON the POWER Switch on the side of the ECS/SP Control Box.
10. Recalibrate the Control Valve using the procedures in Chapter 4, section 4.2.1.
11. Replace the cover on the Electronics Module after the Valve has been successfully
calibrated.
12. Return the unit to service.
COVER
SCREWS (2)
HAND-WHEEL
Figure 8-22. Control Valve Electronics Module Cover – Top View
DIP SWITCHES (3)
(SET TO OFF POSITION)
WIRING
TERMINAL
CONNECTIONS
MODULE
MOUNTING
HOLES
Figure 8-23. Electronics Module with Cover Removed