Vexilar FL Motor - Manual

VEXILAR FL MOTOR REPLACEMENT KIT INSTRUCTIONS
1. Remove both screws from the rear case.
2. Remove the rear case by unplugging the power jack, transducer jack, and alarm jack (if applicable).
3. Remove the control knobs using the 1.5mm allen driver.
4. Remove the four phillips screws from the control board corners. Remove the control board from the front case.
5. Clean the excess brush dust from the front case. Wash it, inside and out, with water, common dish detergent and a soft
brush. Wipe or blow it dry.
6. Remove the 9mm nut that is holding on the wheel, unsolder the three slip ring tabs from the wheel. Remove the wheel
and set it aside.
7. Unsolder the wires from the motor. Be sure to mark the wires so they go back on the same way. Unscrew the three small
philip screws holding the motor. Remove the motor.
8. Remove the slip rings and insulators from the slip ring boss. Using a 1.5 mm allan wrench, remove the slip ring boss from
the motor shaft.
If You Are NOT Replacing Slip Rings and Brushes Jump To Step 15
9.
Notice the component sitting on top of the brush assembly. This is either a Reed Switch or a Hall IC. If it’s a Reed Switch,
it must be moved out of the way prior to removing the old brush assembly. Heat one of the two solder joints and lift the
Reed Switch up far enough so the brush assembly can be pulled out from underneath it. If you have the Hall IC, they are
glued onto the brush assembly. Simply break it free from the brush assembly and bend it up slightly.
10. Remove the old brush assembly by heating each point where the assembly is soldered to the circuit board and pulling up
on the assembly while the joint is still hot.
11. Bend and cut the tabs on your new brush
assembly to make it look like your old brush
assembly.
12. Set the new brush assembly into position and
solder it down. Reinstall the motor making sure
you move each brush out of the way as you insert
the motor into place. Tighten it and the brush
assembly down with the three small philips
screws. Reheat each solder connection to insure
there is no excess pressure on the solder joints.
13. Put the Reed Switch or Hall IC back into position.
14. Take a new slip ring and install it into the longest
slot, then place an insulator washer on top. Do
same for the next longest slot and again for the
shortest slot. Place the spacer collar on top. Cut
the tallest two slip ring tabs down to the level of
the shortest one.
15. Reinstall the slip rings and insulators (if not already replaced above) and the old motor with the new motor. Be sure the
components attached to the motor do not interfere with anything on the circuit board.
16. Reinstall the wheel onto the slip ring boss shaft. Make sure that the flat spot on the shaft is facing to the left of the wheel,
at the 8 O’clock position, and the LED assembly on the wheel is at the 12 O’clock position.
17. Bend down the tabs, install the spacer, and then the nut. Make sure the three bumps on the bottom of the spacer fit into
the three holes on the wheel. Tighten the nut down securely, but do not over tighten so that the spacer becomes
compressed. Solder the slip ring tabs to the wheel and solder the wires back onto the motor. Rotate the wheel slowly by
hand and observe the clearance between the magnet assembly on the underside of the wheel and the Reed Switch or
Hall IC. Ideally, they should come as close to each other as possible without making contact.
18. Reinstall the control board into the front case with the four philips screws. Put the rear case back on, install the power
jack, transducer jack, and alarm jack (if applicable).
Before you close the back cover, you’ll need to calibrate the motor speed to insure accurate depth readings.
19. Connect your transducer and position it so it is 16-1/2” above a hard flat floor.
20. Turn the unit on to the first depth range. Set the gain so you can see a good solid echo for the floor. (Depth will not be
accurate since sound travels more slowly in air than water)
21. Adjust the potentiometer on the motor assembly so the leading edge of the floor echo lines up with the 6 foot mark on the
outer scale.
22. Secure the rear case using the two remaining screws. Put the control knobs back on making sure the white line is pointing
to the correct position.
23. If you replaced brushes and slip rings, connect the unit to power and turn it on. No transducer needs to be connected. Let
the unit run for about 30 minutes at room temperature to let the new brushes seat properly.
If you have any questions about this procedure, please contact us
by telephone at 952-884-5291 or email at [email protected].