Wells WATER-MAX Owner's Manual page 33

SCR ASSEMBLY
Repair time not to exceed 1.0 hour
A. Preparation
1. Disconnect Water-Max™ from electrical power.
2. Shut off water supply to Water-Max™.
B. Removal
1. Remove top cover and wrap (see page 28)
2. Disconnect the contactor shelf:
a. Remove two nuts at the corners of the shelf.
b. Lift the shelf only enough to gain access to the SCR
heatsink screws.
3. Disconnect old SCR assembly:
a. Remove two screws from the bottom of the SCR heatsink.
b. Note position of wires on SCR.
c. Disconnect wires from SCR. Discard entire SCR and
heatsink assembly .
C. Installation
1. Note orientation of SCR assembly. The notch in the base of
the SCR faces the front of the unit. The fins of the heatsink
face the right (power switch) side.
2. Connect wires. See drawings at right for configuration.
3. Install two screws holding SCR assembly to shelf.
4. Reinstall contactor shelf to unit.
5. Reinstall top cover and wrap.
D. Return Unit to Service
1. Turn water supply on and check for leaks.
2. Connect Water-Max™ to electrical power and test for proper
operation.
SERVICING INSTRUCTIONS (continued)
Disconnect Water-Max™ from
electrical power before removing
any panel or cover.
TOOLS REQUIRED:
#2 Phillips Screwdriver
Container to hold fasteners
Needle Nose Pliers
7/16" & 9/16" Open End Wrenches
31
WARNING
Electric Shock
Hazard