BOXER KING 5600 - Inverter Pole Switch Q3: Check and Replacement

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).