Donaldson Company, Inc.
12
Electrical Installation
Reference the input voltage and motor amp draw
listed on the motor’s nameplate.
In the chart below, locate the amp rating of the
motor and follow appropriate column for 50- or
100-Amp Current Sensor Jumper Position to find
the correct jumper position, A, B, or C. The fourth
column of the chart refers to the number of times
that the motor leads pass through the current
sensor coils.
There are three jumper plugs on the main printed
circuit board as shown in Jumper Position. The
three jumpers must be in the same position for
proper performance. Reference the wiring diagram
supplied with the Checker board.
Jumper Position
Motor Current Sensor Setup Table
Blower Motor
Full-Load Amp
50 Amp Current Sensor
Jumper Position
100 Amp Current Sensor
Jumper Position
Primary Turns
Through Sensor Core
0 to 5
A
N/A
2
6 to 10
A
N/A
1
11 to 25
B
A
1
26 to 50
C
B
1
51 to 100
N/A
C
1
jumpers
jumper
position A
jumper
position B
jumper
position C
