Ross TC700M, Operator'S Manual, Page: 39 / 44

TROUBLESHOOTING CHART
TROUBLE CAUSE REMEDY
MN700-MC0010
8-3
2)
(cont.) Machine plugged in,
guards closed, main power switch
pulled out, only a small click is heard
when the START switch is pressed.
(Relay is operating).
Motor starter coil faulty
(open)
Check by measuring the voltage across the two
coil terminals of the starter after turning the
machine on and pressing the START switch.
This should be 120 VAC. If the voltage is
present and the starter does not pull in, the coil
is faulty.
Overload switch in starter open Overload tripped, press reset button on starter.
Tenderizers are normally shipped with the
starters set up for automatic reset so if the
motor is subjected t overload, it would not be
necessary to manually reset the starter.
Overload switch in starter faulty Check by measuring the voltage from the NC
terminal on the starter to ground, this should be
0 volts; if not, the overload section of the starter
should be replaced.
3)
Machine plugged in, guards
closed, main power switch pulled out,
a large click or thump is heard when
pressing the START switch but the
machine does not start. (Motor
starter is pulled in). Motor may hum
and draw excessive line current.
One or more heaters in motor starter burned out
Motor faulty or poor connections in motor box
Check by measuring the voltage from terminals
T1 to T2, T2 to T3, and T1 to T3; all should be
equal and the same as the line voltage.
Check connections in motor box and replace
motor as required.
4)
Motor operates when START
switch pressed, but machine does not
run.
Coupling or key between motor and transmission faulty
Transmission faulty Check visually and replace as required.
Check by noting rotation of input and output
shafts on transmission.
TC700MC
TENDERIZER