BOXER KING 5600, Service Manual

Page: 57 / 140

Service Manual 04/2010 Rev.B
57
5.7 INVERTER POLE SWITCH Q3:
CHECK AND REPLACEMENT
: 1h
: Medium and big cross screwdrivers,
multimeter.
L
: Defective inverter pole switch may cause the
following malfunction:
1. Low chuck power.
2. Noisy motor.
3. Motor damaging (burning).
4. Chuck motor does not run in one or both
speeds.
TO CHECK THE INVERTER POLE SWITCH:
Verify which is the speed that would not work.
Remove the chuck motor terminal cover.
Switch the machine on.
MACHINE UNDER TENSION
DANGER OF ELECTRIC SHOCK
Turn the inverter switch on the faulty speed.
Take the multimeter and select it in VAC.
Position the multimeter probes on U1 and W1
of the motor terminals and press the rotation
pedal (Fig.73).
Fig.73
The display must show the voltage at which
the machine is supplied. If not the switch must
be replaced.
Perform the same controls with terminals U1-
V1 and W1-V1.
TO REPLACE THE INVERTER POLE SWITCH:
Turn the machine off.
Open the electric box.
Remove screw shown by the arrow to take
out the switch handle (Fig.74).
Fig.74
Remove the white spacer (Fig.75).
Fig.75
Remove the screws shown by the arrows to
take out the plastic protection and the speed
label (Fig.76).
Fig.76
Remove the screws shown by the arrows to
get the inverter switch free (Fig. 77 and 78).