Service Manual

Component Testing
For accurate resistance and/or continuity checks, elec-
trically disconnect the component being tested from the
circuit (e.g. unplug the switch connector before doing a
continuity
check on switch).
CAUTION
ity with a multimeter (ohms setting), make sure
When testing electrical components for continu-
that power to the circuit has been disconnected.
Brush Switch
The brush switch is used to turn the sweeper brush on
by energizing the brush motor solenoid (S3) and the de-
mand solenoid (S2). When the brush switch is in the off
position, the brush solenoid is not energized. The switch
includes
an indicator light that will illuminate when the
brush switch is in the on position. This switch is located
in the control box enclosure (Fig. 2).
NOTE: If the hopper is in the raised position or if the
hopper switch is pushed to raise, the brush motor sole-
noid (S3) will be de–energized regardless of brush
switch
position.
Testing
The brush switch terminals are marked as shown in Fig-
ure 3. The circuitry of this switch is shown in the chart be-
low. With the use of a multimeter (ohms setting), the
Figure 2
switch
functions may be tested to determine whether
1. Brush switch
continuity exists between the various terminals for each
switch position. Verify continuity between switch termi-
nals.
BACK OF SWITCH
SWITCH
NORMAL OTHER
POSITION CIRCUITS CIRCUITS
ON 2 + 3 5 + 6
OFF 2 + 1 5 + 4
Figure 3
Electrical
System
Pro Sweep 5200 Page 4 – 5 Electrical System
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