![]() The grounding prong in the plug is grOunding connected through the green wire inside tO preVent the cord to the grounding system in the electric ShOcK tool. During operation, never place your head, awg. cord with up to 10 amps capability (up to 50 feet), with wire size rated at 18 4. Never leave the machine running and This tool requires use of an extension unattended. Otherwise, the take-up cover while the machine is extension cord could melt and catch fire, operating. Do not place your fingers into the thread tool without heating up. Watch what you are doing, applications for which this product was use common sense. ![]() Be sure not attempt to force a small product the switch is in the Off position when not or attachment to do the work of a in use and before plugging in. ![]() Always lock up tools and the machine work surface before keep out of reach of children. Feed Type Link style needle feed Sewing Directions Forward and reverse feed 3 Machine Dimensions 20- / ” L x 10” H 4 - 2 Screwdrivers- 3 Bobbins- Small lubricating bottle with tip- Spare needles (size 90/14) Accessories - Power Switch Table Stand Kit Table S SpeciFicatiOnS Machine Type Heavy duty, industrial sewing machine high speed, single needle-lock stitch Drive V-belt driven (size 41 replacement belt) Action Foot pedal operation, along with a knee and manual lifting arm for presser foot. No portion of this manual or any artwork contained herein may be reproduced in any shape or form without the express written consent of Harbor Freight Tools. © ® Copyright 2005 by Harbor Freight Tools. Failure to do so can result in serious injury. ![]() The NPN transistor BD 139 drives the output from timer IC, this output pulse duration decides the speed of DC motor, by varying the VR1 resistor we can vary the pulse output of timer.Single needle induStrial Sewing Machine Model 3914 Set up and Operating inStructiOnS Visit our website at: read this material before using this product. The diode D1 protects the DC motor from the back emf effect hence there is no output load effect rise. The DC motor is connected to the supply through DPDT ( double pole double through ) switch, by changing the switch position we can get forward and reverse rotation from the DC motor because this switch interchanges power supply polarity applied to the DC motor. In this website we already published about Speed control of DC motor with timer IC, here this circuit constructed for the basic motive to meet the forward / Reverse operation of DC motor with speed control. ![]()
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