4.
Pump Installation
Remove the control from the pump and install pump in
injection loop
Position of terminal box:
Prefered installation of the pump will have the terminal
box located to one side of the pump or the other, with
the conduit entry down.
Page 6
If the terminal box position needs to be changed, it is
best to do so before installation. However, if the pump
is already installed, ensure that the electrical supply is
turned off and close the isolation valves before
removing the Allen screws.
To Change terminal box position:
•
Remove the four (4) Allen screws (4 or 5mm
wrench) while supporting the stator (motor).
•
Carefully separate the stator from the pump
chamber and rotate it to the correct terminal box
orientation.
•
Replace the Allen screws and tighten diagonally
and evenly (7 ft. –lb. torque).
•
Check that the motor shaft turns freely. Remove
the large screw in the middle of the nameplate,
insert a small flat blade screwdriver into the end
of the shaft, and turn gently.
•
If the shaft does not turn easily, repeat the
disassembly/reassembly process.
Pump Mounting: For Indoor Use Only
Arrows on the side or bottom of the pump chamber
indicate direction of flow through the pump. Grundfos
Miximizer pumps can be installed in both vertical and
horizontal lines. Flow direction should be from the
boiler/supply loop into the system loop.
Figure 4A - Prefered Terminal
Box Orientation
Figure 4B - Optional Terminal Box
Orientation (see Operational
Limits)
