Kussmaul Electronics 091-79 - Manual (Page 3)

III. ADJUSTING OF THE LOAD MANAGER 2
The factory adjustment for the Load Manager 2 is for the first relay to be energized. The 2nd relay
is energized at a voltage .5 volts lower than relay 1. No separate adjustment is provided for relay 2.
To readjust the setpoint, remove the 4 screws and lift off the cover. Connect a variable voltage source
to the battery input terminals and an ohmeter across the normally open contacts of relay 1. Vary
the input voltage to the point at which relay 1 just becomes energized. Turn the trimmer resistor
R100 slightly CCW to lower the setpoint or slightly CW to raise the setpoint. Check the new setting
to determine what voltage will cause the relay to be energized.
IV. FIGURE 2, VOLTAGE ADJUSTMENT
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CAUTION
The circuit responds very slowly so allow ample time, 15 to 30 seconds for the
circuit to respond to voltage changes. This time delay is required to prevent the
relay from chattering for small changes in voltage around the setpoint.