BANDSAW OPERATIONS - OD1646 - LESSON 2/TASK 2
3.
Troubleshooting Fault Symptoms in the Model 1612-0 Bandsaw Machine
The malfunction symptoms and their possible causes for problems in the model
1612-0 bandsaw machine are described below. As stated earlier, the remedies
for these possible causes will not be discussed in detail here. Operational
solutions to problems, such as selecting a blade of the proper pitch, can be
found in TM 9-3419-227-10, pages 8 through 26. Lubrication and maintenance
solutions for malfunctions can be found in TM 9-3419-227-10, on pages 27
through 31.
This TM should always be available before actual repair or
troubleshooting procedures are performed.
a.
Troubleshooting the Malfunction: MACHINE WILL NOT START.
When the
model 1612-0 bandsaw machine will not start, three checks should be made in
an attempt to locate the cause of the problem.
(1) First, check the main fuses and the control circuit fuse. Replace
any fuse that is defective. If a fuse is replaced, try to start the machine
to see if the problem has been solved. If the machine still will not start,
perform the next step.
(2) Check the reset on the band drive motor starter (if a starter is
used).
Starting and stopping the machine a number of times in quick
succession, or an overload, will trip the starter heater.
After locating
and correcting the trouble, push in the reset button. If the heater relay
has been set for automatic operation, it will not be necessary to push the
reset button, but will only be necessary to wait for the relay to cool. Try
starting the machine. If the machine will not start, perform the next step.
(3) Check the transformer, and replace it if necessary.
Test operate to
ensure that the problem has been fixed.
b.
Troubleshooting the Malfunction: SEVERE MACHINE VIBRATION.
There are
three possible causes for severe machine vibration.
(1) Check to see if the band wheels are balanced. If the band wheels
are not balanced, machine vibration could result.
Balance the wheels if
necessary.
67
Previous Page
