SCIFIT PRO1000 Sport, Руководство по обслуживанию, Страница: 9 / 19

8
either one of the center pins (-).
The voltmeter should measure 4-
5 volts DC.
3. If there is no voltage, replace the
power supply board. See
Procedure 1.
Procedure 3 – Checking and
Adjusting the Speed Sensor
1. Turn machine on and press start.
2. Turn crank arms (Item 7 or 101)
at 1 revolution per second. The
RPM window should display
around 60
±
10 rpm.
3. If the RPM window is displaying a
reading outside of the specified
range, proceed to the next step to
adjust the speed sensor.
4. Remove the crank arms and
cover (Item 7 or 105 and Item 16)
from the right side of the
machine.
5. The air gap between the brake
flywheel and speed sensor
should be 1/8” – 3/16”.
6. The speed sensor must be
pointed directly at the flywheel so
the eyes of the sensor will
intersect the center of the axis of
the brake. Adjust as needed.
7. Rotate the crank arm again at 1
rev. per second. If the RPM
window displays a number
greater than zero (0) but not
within 60
±
10 rpm, repeat Steps 1
- 7. If a reading of zero (0) is
displayed, proceed to step 8.
8. Use a voltmeter to measure the
DC voltage across J5 pin 1 (+)
and J5 pin 2 (-) on the power
supply board. Refer to Fig. 5. The
voltmeter should read 4-5 VDC.
9. If there is no voltage, replace the
power supply board (Item 87);
see Procedure 1. If 4-5 volts are
present, replace the speed
sensor.
Procedure 4 – Removal and
Replacement of the Brake
Assembly
1. Remove all the crank bars (Items
8 and 53) and crank hub
assemblies (Item 55) from the
unit.
2. Remove the screws (Item 15)
that fasten the covers (Items 17
and 59) to the main frame. The
covers can be removed now.
3. Disconnect the two red wires on
the right side of brake (Item 73).
4. Relieve the tension in the poly-v
belt (Item 74) by loosening the ½-
20 nut attached to item 62.
Loosen the set screw (Item 72). If
the pulley brake drive shaft does
not move on its own, use a
hammer to knock the shaft back
a few millimeters.
5. Remove the poly-v belt from the
plastic pulley by wedging a
screwdriver blade between the
belt and pulley while rotating the
brake slowly downward to work
the belt off the pulley. Take care
not to damage the pulley.
6. Remove the three (3) socket
head screws (Item 61) that hold
the brake assembly to the main
frame.
7. Pull brake away from main frame.
Be careful not to damage the
speed sensor when removing the
brake.
8. Remove the brake from the
machine and set aside to return
to SCIFIT (request a UPS call tag
by phone).