ACCU-Pro 670 - TROUBLESHOOTING; Electromagnets and Actuator Troubleshooting

31
TROUBLESHOOTING (Continued) TRAVERSING
--POSSIBLE CAUSE-- --REMEDY-- --REASON----PROBLEM--
H--Verify 12 VDC at the
electromagnet connections at
the bottom of the electrical
box.
A--Verify 120 VAC at trans-
former input.
B--Verify 12 VAC at the input to
the bridge diode.
C--Verify the 10 Amp circuit
breaker is not tripped and CB
is good.
D-- Verify 12 VDC output from
the bridge diode.
E--Verify 12 VDC at the actua-
tor switch input.
F-- Push the actuator switch
and verify 12 VDC+ or 12VDC-
at the actuator switch output.
G-- Verify 12 VDC at the
actuator connections at the left
side of the grinder under the left
leg cover.
Electromagnets
do not function.
(Continued)
Tooling Bar
Rotation Actuator
does not func-
tion.
Power must pass to the
electromagnet cords.
Poer must be delivered to
the transformer.
Power must come through
the transformer and circuit
breaker.
Power must pass through
the transformer and circuit
breaker.
Power must pass through
the bridge diode.
Power must get to switch
input.
Power must pass through
the switch when pushed.
Power must pass through
the cord and to the motor.
Check for 12 VDC at terminals
58MGTBL and 59MGTRD,
there is one set of terminals for
each magnet. If yes, Call
Factory Customer Service for
assistance. If no, replace wires
58 and 59.
Check for 120 VAC at terminal
65TF2BL and 64TF2BL. If yes,
Go to B. If no, verify power is
through the MAG. If yes,
replace wire 64 and 65.
Check for 12 VAC at terminals
46DB1-S and 67BD1-S. If yes,
Go to D. If no, Go to C.
Check continuity of the circuit
breaker at 0.00 with the wires
removed. If yes, replace
transformer. If continuity of
circuit breaker is no, reset or
replace circuit breaker.
Check for 12 VDC at terminals
60DB1-+ and 61BD--. If yes,
Go to E. If no, replace bridge
diode.
Check for 12 VDC at terminals
60AMS-2 and 61AMS-5. If
yes, Go to F. If no, replace
wires 60 and 61.
Check for 12 VDC+ or 12 VDC-
at terminals 50AMS-1 and
50AMS-4 or 50AMS-3 and
50AMS-6 depending on which
way you push the switch. If
yes, Go to G. If no, replace
switch.
Check for 12 VDC+ or 12 VDC-
at terminals 50ACTBL and
50ACTRD with the actuator
switch pushed. If yes, replace
the actuator motor. If no,
replace cord wire number 50.