Sterlco BP800 Series Granulators - Manual (Page 33)

800 Series beside-the-press Chapter 6: Troubleshooting 33 of 43
Chapter 6: Troubleshooting
6-1 Introduction
The utmost in safety precautions should be observed at all times when working on or
around the machine and the electrical components. All normal trouble-shooting must
be accomplished with the power off, line fuses removed, and with the machine
tagged as out of service.
The use of good quality test equipment cannot be over-emphasized when
troubleshooting is indicated. Use a good ammeter that can measure at least twice the
AC and DC current that can be encountered for the machine. Be sure that the
voltmeter has at least minimum impedance of 5,000 OHMS-per-volt on AC and
20,000 OHMS-per-volt on DC scales. Popular combination meters, VOM and
VTVM can be selected to provide the necessary functions.
Before making haphazard substitutions and repairs when defective electrical
components are malfunctioning, we recommend that you check the associated
circuitry and assemblies for other defective devices. It is common to replace the
obviously damaged component without actually locating the real cause of the trouble.
Such hasty substitutions will only destroy the new component. Refer to wiring
diagrams and schematics.
Locating mechanical problems, should they occur, is relatively straightforward.
When necessary, refer to the parts catalog section.