49
HARDI MT-9000 OPERATOR’S MANUAL
not, check for cut or pinched wires.
TESTING THE SPEED TRANSDUCER:
Wire connections: BROWN wire to positive of 12V battery
BLACK wire to negative
BLUE wire to positive lead of multimeter
1. Connect negative lead of multimeter to negative post of 12V battery
2. Set multimeter to DC volt
3. Bringing the south pole of a magnet to a distance of 3/16" (5-7mm)
from the transducer will register 0.3 +/- 0.1 volt
4. Removing the magnet will register 7.0 +/- 1.0 volt
TESTING THE FLOW TRANSDUCER:
Wire connections: BROWN wire to positive of 12V battery
BLACK wire to negative
BLUE wire to positive lead of multimeter
1. Make sure the rotor turns freely.
2. Each vane in the rotor has a magnet in it with the pole facing out
Check that the 4 magnets are in place.
3. Check every second magnet has the same pole orientation so
the rotor magnets are N - S - N - S.
4. Connect negative lead of multimeter to negative post of 12V
battery.
5. Set multimeter to DC volt.
6. By turning the mill wheel slowly, this will register approx.
8.0 +/- 1 volt with the diode on and 0.3 +/- 0.1 volt with the
diode off with every second magnet.
Flow Input:
Turn the rotary dial to the flow rate position and disconnect the
flow sensor (green tie) from the SCM. Check for 12 volts between pins B
(white) and C (black) of the main harness flow input (green tie). Using a clip
lead or other jumper wire (such as a paper clip bent in a “U”), rapidly short
together pins A (red) and C (black) of the 3-pin connector several times).
The console should respond with some flow per minute reading. If not,
harness may be defective. Check for cut or pinched wires.
Summary of Contents for MUSTANG 3500
Page 1: ...HARDI MUSTANG 3500 Operator s Manual 67301603 6 04 ...
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Page 56: ...APPENDICES ...
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