Transcription of TROUBLE SHOOTING EXTRUSION CONTROL …
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TROUBLE SHOOTING EXTRUSION CONTROL …
1 TROUBLE SHOOTING on EXTRUSION Temperature CONTROL Equipment Arthur Holland. Holland Technical Skills Know your Machine Label with its Function or Zone, the various controls, indicators and parts, such as: Temperature controllers, thermocouples plugs and sockets, heaters, heater contactors, ammeters, cooling solenoid valves. Melt pressure transducers and indicators, motor drive controls, their meters, switches and push-buttons. Electrical disconnects, fuses, blowers and their contactors and indicator lights. This includes terminal and wiring identification inside the CONTROL panel. Write down or use a marker to denote normal reading or settings on gauges, indicators and adjustable valves. For controllers, list settings that vary with different jobs; temperature, speed, amps.
FAN COOLING PROBLEM. Temperature below set point and fan will not turn off Check for fan contactor welded up or locked on or controller relay locked on due to a faulty
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