Stimmen - 2, Durchschnittliche Bewertung: 3
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Anleitung Zusammenfassung
The P.C. Board causes the motor to run in a forward direction when the "ON” Switch is actuated and turn off when the "OFF/REVERSE" is momentarily depressed. When the "OFF/REVERSE" Switch is held down PCB1 reverses direction of the motor. If the motor stops due to a jam, PCB1 will reverse the direction of the motor then shut off after the jam has been ejected. When the "ON" button is depressed, contacts A and B of SI close momentarily completing a circuit between PCB1-1 and PCB1-3. At this time the coil of the forward relay on the board latches causing the motor to run in the forward direction. When the "OFF/REVERSE" button is momentarily depressed the circuit is broken causing the unit to shut off. When the shredder becomes full, the "BAG FULL" flap pushed up opening the normally closed contacts of the flap switch. The motor is disabled until the shredded paper is either pushed down into the bag or the full bag is replaced. If too much paper is inserted into the throat opening, the cutting head stalls forcing current on the reverse winding to drop. PCB-1 detects the change in current and activates the reverse relay on the board. The motor reverses direction to eject the paper. After the jam has been ejected the motor automatically shuts off. 8 PAGE.005 5.0 TROUBLESHOOTING (Continued) 5.3 Electrical Operation (Continued) When the "OFF/REVERSE" button is depressed and held a circuit is completed between PCB1-4 and PCB1-5. The motor will continue to run in reverse as long as the button is held down. 5.4 Mechanical Operation During the shredding operation the motor drives the lower cutter shaft, via the cutter drive gear, which then drives the upper cutter shaft via the cutter gears. The upper and lower cutter shafts are machined so that when mated, there is a nominal gap of .004 of an inch between the cutting surfaces. Paper inserted between the cutting surfaces is sheared. If after use the gap exceeds .006 of an inch, light lifts of paper (1 to 2 sheets) may pass through the cutters folded instead of shredded. To correct the incomplete shred a cutting shaft adjustment will have to be performed as explained in Section 6.0. 5.5 General Troubleshooting Malfunction corrections are based on visual observations of the operator or technician. The cause of a malfunction can be isolated by noting at which point during the operating cycle the symptom occurs. The Principles of Operation paragraphs, electrical schematic diagrams, and electrical wiring diagrams will assist in pinpointing any malfunctions. 5.6 Troubleshooting Guide Chart The Troubleshooting Guide Chart is arranged in order of normal operational sequence. When a malfunction occurs, read down the Symptom column until you reach the appropriate description for your symptom. Read the corresponding PROBABLE MALFUNCTION, then perform the recommended procedure in the CORRECTIVE ACTION column. When replacing electrical components which have push on type terminals, tag the electrical leads removed to ensure proper reconnection. Refer to the wiring diagram 5-1 to resolve any wiring difficulties that may occur. WARNING: Always unplug the shredder to avoid possible severe electrical shock before attempting any repairs. 9 PPGE.006 5.0 TROUBLESHOOTING (Continued) 5.6 Troubleshooting Guide Chart SYMPTOM PROBABLE CAUSE CORRECTIVE ACTION Motor does not run. No Power cord disconnected indication of power. Connect power cord to outlet. Shred bag full Empty shred bag. Defective P.C. Board Replace PCB1 Motor overheated. Allow motor to cool Defective Motor. Check for shorted or open windings. Replace if necessary. Defective Bag Full Flap switch Check continuity and replace if necessary. Motor hums but does not Cutting head jammed, run. Clear cutters. Defective wire termination Perform continuity checks and correct poor termination. Defective motor capacitor. Check and replace if necessary Defective motor. Replace motor. Motor does not run in reverse mode. Defective Reverse Switch Check continuity and replace if necessary. Defective wire termination. Perform continuity checks and correct poor termination. 10 PAGE.007 5.0 TROUBLESHOOTING 5.6 Troubleshooting Guide Chart (Continued) SYMPTOM PROBABLE CAUSE Motor does not run in Defective P.C. Board reverse mode. CORRECTIVE ACTION Replace PCB1 Shred capacity has diminished. Shredded waste jammed in cutters. Clean cutters. Cutters too tight Adjust spanner nut on top cutter shaft. Cutters require lubrication. Lubricate cutters with light weight oil such as EZ-1 oil (p/n 1961508) Cutters are bent Visually inspect for bent cutters, replace if necessary. Shredder runs noisily. Shredded wasted jammed in cutters. Clean cutters Strippers damaged or rubbing on cutters. Visually inspected for bent or rubbing strippers. Adjust or replace if necessary. Warped cutter drive gear Visually inspect gear. Replace if necessary. Runs in reverse only Defective forward switch Replac...