Pfaff powerquilter 16.0 Manual - Page 30

Correcting Common Issues Stitch Quality is Poor • Tension is not balanced Corrective Measure • Adjust the tension of the needle thread after ensuring the bobbin tension is adjusted correctly (see pages 19-20). • Bobbin case is damaged, corroded, dirty, et cetera • Moving the fabric or depressing the foot pedal inconsistently Tension Is Poor • Lint caught under the tension spring in the bobbin case • Since thread slides over the surface of the bobbin case at a high speed, make sure the case is free of any lint or foreign matter that could impede thread passage through the machine. • The My Speed setting should be adjusted to a value that will allow you to sew comfortably and confidently with the foot pedal fully depressed. Discover a method of holding the fabric that is most comfortable. Corrective Measure • With some threads, lint and other material can build up under the tension leaf spring and begin to lift the spring. This reduces the spring's ability to compress against the thread. By inserting a needle under the spring and clearing out the lint, the bobbin tension will return to the previously set tension. • Poorly wound bobbin Hand Wheel Won't Rotate • Thread is entangled and caught in the hook Thread Nests Under Quilt • Not enough tension on top thread • Improper threading Motor Fails to Run • On/Off switch is off or power cord is loose • Foot pedal is unplugged • If the bobbin is wound too tight or too loose it can lead to poor and inconsistent tension. Make sure when the bobbin is wound that the thread tension is not so tight that the wound bobbin thread feels hard and causes the bobbin sides to bulge. It should also not be so loose that the thread is spongy, which can cause the thread to tangle as it is wound. Corrective Measure • Turn off the machine and remove the power plug from the electrical outlet. Remove the bobbin case from the machine. Lubricate the hook, then manually rotate the hand wheel clockwise and counter-clockwise several times. Remove the thread caught in the hook. Corrective Measure • Check that the machine is threaded correctly. Make certain that the thread is flossed snugly in place between the two tension discs. If the machine is correctly threaded, tighten the top tension by rotating the tension knob clockwise. • Refer to the threading diagram and threading instructions on page 16-17. Corrective Measure • Turn the machine on only by using the switch on the back of the power pod. Verify the power cord is plugged in tightly at both the machine and the power source. • Verify that the foot pedal is plugged in. If the main screen status message in the upper left hand corner says "Check Pedal", then the pedal is not properly installed. Page 30