275 Spezialnähmaschine mit Direktantrieb Betriebsanleitung D Instruction manual GB Postfach 17 03 51, D-33703 Bielefeld • Potsdamer Straße 190, D-33719 Bielefeld Telefon +49 (0) 521/ 9 25 - 00 • Telefax +49 (0) 521/ 9 25 24 35 • www.duerkopp-adler.com Ausgabe / Edition: 02/2002 Änderungsindex Rev. index: 00.0 Printed in Germany Teile-Nr./Part.-No.
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Foreword This instruction manual is intended to help the user to become familiar with the machine and take advantage of its application possibilities in accordance with the recommendations. The instruction manual contains important information on how to operate the machine securely, properly and economically. Observation of the instructions eliminates danger, reduces costs for repair and down-times, and increases the reliability and life of the machine.
General safety instructions The non-observance of the following safety instructions can cause bodily injuries or damages to the machine. 1. The machine must only be commissioned in full knowledge of the instruction book and operated by persons with appropriate training. 2. Before putting into service also read the safety rules and instructions of the motor supplier. 3. The machine must be used only for the purpose intended. Use of the machine without the safety devices is not permitted.
Contents page: Foreword and general safety instructions Part 1: Operating instructions Class 275 Direct Drive 1. Product description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 2. Designated use . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 3. Subclasses . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 4. Accessories . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 5. Technical data . . . . . . . . . . . .
.18 Fullness control (Cl. 275-142342, 275-742642) . . . . . . . . . 6.18.1 General . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6.18.2 Operating terminal - description of the operating components 6.18.3 Switching the machine on . . . . . . . . . . . . . . . . . . . . . . 6.18.4 Sewing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6.18.4.1 Smooth sewing . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6.18.4.2 Sewing with fullness . . . . . . . . . . . . . . . .
1. Product description The DÜRKOPP ADLER 275 is a special sewing machine with universal applications. Basic type Single-needle double-lockstitch machine with underfeed, differentiable-foot overfeed and thread cutter for light to medium-heavy material with 4-mm stitch length and max. 8-mm overfeed length. 2. Designated use The 275 is a special sewing machine designed to sew light material. Such material is generally made of textile fibers, but it may also be leather.
3. Subclasses Cl. 275-140332 Like the basic type, but with automatic electromagnetic bar-tacking and automatic foot elevation, a smaller feeder lifting cam and an adapted regulator to improve the smooth-sewing results with small stitch lengths and light materials, a drive motor with control device attached to the machine. Fitted as standard with keys for bar-tacking within the seam, for needle up/down and for activating and suppressing bar tacks. Cl.
4. Accessories Material no. Equipment 275-140332 275-140342 275-142342 275-740642 275-742642 Subcl.
275-140332 275-142042 275-140342 275-740642 275-742642 Subcl.
5. Technical data Type of stitch 275-742642 301 Hook type horizontal hook Number of needles 1 Needle system 134, 797 or Sy 195 501 Max. needle thickness (depending on E no.) [Nm] 70 - 120 Max. sewing-thread thickness 30 Max. stitch length - forwards - backwards [mm] [mm] Max. overfeed length [mm] Max.
1 2 3 4 10 Fig. a: Correct thread interlacing in the centre of the material Fig. b: Needle-thread tension too low or hook thread tension too high Fig.
6. Operation 6.1 Threading the needle thread Caution: danger of injury Turn off the main switch. The needle thread may only be threaded with the machine turned off. – – Place the yarn reel on the reel stand as shown in the illustration. Thread the needle thread as shown in the diagram on the preceding page. 6.
6.4 Winding on the bobbin thread 1 2 3 Caution: danger of injury Turn off the main switch. Threading of the bobbin thread should only be done with the sewing machine switched off. – – – – – – – – 12 Place the bobbin on the bobbin-winder shaft 1. Thread the bobbin thread as shown in the illustration. Wind the bobbin thread clockwise onto the bobbin core. Pull the thread end through the cutter clamp 2 and cut. Swivel the bobbin-winder flap 3 against the bobbin. Turn on the main switch. Commence sewing.
6.5 Fitting the hook thread bobbin 1 2 3 5 6 4 Caution: danger of injury Turn off the main switch. The hook thread bobbin may only be fitted with the machine turned off. Removing the bobbin – Raise the bobbin-housing flap 1. – Remove the bobbin-housing top 2 with the bobbin. – Remove the empty bobbin from the bobbin-housing top 2. Fitting the full bobbin – Place the full bobbin 3 in the bobbin-housing top 2. – Pull the hook thread through slit 4 under tension spring 6 and into hole 5.
6.6 Setting the hook thread tension 2 1 4 3 Caution: danger of injury Turn off the main switch. The hook thread tension may only be adjusted with the machine turned off. Setting the hook thread tension The hook thread tension setting must be such as to produce a seam like the one shown in fig. a) in section 6. – At a recommended hook thread tension of 30g, for example, 15g should be produced by the braking spring 1 and 15g by the tension spring 4.
6.7 Changing needles 1 4 2 3 Caution: danger of injury Turn off the main switch. The needle may only be changed with the machine turned off. – – GB Undo screw 1 and remove needle. Insert the new needle as far as it will go into the hole in needle bar 4. CAUTION: The throat 2 must point in the direction of the shuttle tip 3 (see sketch). – Tighten screw 1.
6.8 Setting the thread regulator 1 2 3 4 5 6 The thread regulator 2 regulates the amount of needle thread necessary for stitch formation. Only a properly-adjusted thread regulator ensures an ideal sewing result. The setting depends on the following factors: – stitch length – material thickness – yarn characteristics At the correct setting the upper-thread loop 6 must slide at low tension over the shuttle. Caution: danger of injury Turn off the main switch.
6.9 Setting the sewing-foot pressure 1 2 3 The required sewing-foot pressure is set with adjustment wheel 2. – Undo locknut 3. – To increase the sewing-foot pressure = turn adjustment wheel 2 clockwise. To reduce the sewing-foot pressure = turn adjustment wheel 2 anti-clockwise. – Tighten locknut 3. GB CAUTION: The sewing-foot pressure of the overfeed foot must only be checked with the overfeed foot in contact with the feeder. 6.
6.11 Setting the stitch length 1 2 Adjustment wheels The stitch length is set with adjustment wheel 1 for sewing forwards, with adjustment wheel 2 for sewing backwards.
6.12 Raising the sewing foot 1 2 The sewing feet can be raised mechanically or electromagnetically. Depending on the type and equipment of the machine, they are raised either by operating the knee lever (additional equipment) or pushing the pedal backwards. Mechanical sewing-foot lift – Operate knee lever 2. The sewing foot remains raised as long as the knee lever 2 is held in position. GB Electromagnetic sewing-foot lift – Push the pedal half-way back.
6.14 Setting the value of the overfeed (fullness) (275-140332, 275-140342, 275-740642) 4 1 5 6 2 3 If the stitch length for forward sewing is changed with adjustment wheel 1, the overfeed is automatically changed in line with it. The overfeed length is adjusted with adjustment wheel 6 and can be read off at pointer 3. When using the mechanically or electropneumatically connectable fullness facility (optional extra), the maximum overfeed length can be limited using handle 4.
6.16 Edge cutter (Cl. 275-740642) Y X 2 3 4 6.16.1 Automatically switching on the edge cutter with the first stitch The sewing-drive control contains a function module to raise and lower the edge cutter.
Not automatically switching off the edge cutter at the seam-end If parameter 256 = 0, the edge cutter is not automatically switched off at the seam-end. It can only be switched on and off again by pressing the Y key. 6.16.2 Switching on the edge cutter with an automatic delay If in each seam the edge cutter is to be switched on with a delay, i.e. after a certain number of stitches, the parameter 258 must contain this number of stitches.
6.17 Edge cutter (Cl. 275-742642) Y X 3 6.17.1 Automatically switching on the edge cutter with the first stitch The sewing-drive control contains a function module to raise and lower the edge cutter.
Automatically switching off the edge cutter at the seam-end At the seam-end the edge cutter is automatically switched off when the thread is cut if parameter 256 = 1. The edge cutter can also be switched on and off again at any time by pressing the Y key. Not automatically switching off the edge cutter at the seam-end If parameter 256 = 0, the edge cutter is not automatically switched off at the seam-end. It can only be switched on and off again by pressing the Y key. 6.17.
6.18 Fullness control (Cl. 275-142342, 275-742642) 6.18.1. General This fullness control permits the “semi-automatic” processing of various fullnesses within a seam. 30 programs with up to 8 sequences each can be stored. In each sequence the set length of the overfeed is shown in the display, and it can be changed manually at any time. Operating the knee switch moves from one sequence to the next; this happens automatically at the end of a seam when the thread is cut. 6.18.2.
+ and - keys These keys are used to set the length of the overfeed (fullness) for the active sequence or smooth sewing. Values from 1.0 to 8.0 can be set. The overfeed length can only be up to 1 mm smaller than the basic stitch length. If it is further reduced, so is the basic stitch length. These keys are also used to alter the special-function parameters (see Set-up instructions).
6.18.4.2 Sewing with fullness When the machine is switched on press one of the keys from 1 to 8 (e.g. key 1): fullness sequence 1 is activated and the green LED above key 1 lights up. All other fullness sequences (e.g. from 2 to 8) must be deactivated (the red LEDs must light up). The procedure is as follows: – press and hold down the on/off key – briefly press all the keys of the fullness sequences that are not required (e.g.
6.18.4.5 Alternately sewing right- and left-hand pieces with programmed fullness When alternately sewing right- and left-hand pieces with programmed fullness, the “automatic change-of-direction” function must be activated by pressing the “automatic change-of-direction” key: the green LED above the key lights up. After the sequence has been executed in ascending order it is then executed in descending order, and so on. 6.18.
6.19 Keypad on the machine arm Depending on the subclass and equipment the following keys and displays are available: optional extra LED/ Function key GB Invoke or suppress starting or ending bar tack. If starting or ending bar tacks are generally switched on, pressing this key switches the next one off. If starting or ending bar tacks are generally switched off, pressing this key switches the next one on. Move the needle to the up or down position.
7. Sewing The following preconditions apply to the description of sewing operation: – The following functions are set on the operating panel: starting bar tack: ON ending bar tack: ON sewing-foot position before and after cutting: DOWN needle position before cutting: DOWN (position 1) The main switch is on. The last sewing operation was terminated with an ending bar tack and the thread being cut.
Sewing operation In mid-seam Interrupting sewing Sewing a corner Fullness facility (275-140332, -140342, -740642) operation / explanation - Release pedal (neutral position). The machine halts in position 1 (needle down). The sewing feet are down. - Push pedal half-way back. The machine halts in position 1 (needle down). The sewing feet are raised. - Rotate the material round the needle. - Press key 3. The fullness facility is in line with the values set. - Press key 3 again.
8. Maintenance Caution: danger of injury Turn off the main switch. Maintenance may only be carried out with the machine switched off. Maintenance work must be carried out no less frequently than at the intervals given in the tables (see “operating hours” column). Maintenance intervals may need to be shorter when processing heavy-shedding materials. 8.1 Cleaning and testing A clean machine is a trouble-free machine.
8.2 Lubrication Caution: danger of injury Oil can cause skin eruptions. Avoid protracted contact with the skin. In the event of contact, thoroughly wash the affected area. CAUTION: The handling and disposal of mineral oils is subject to legal regulation. Deliver used oil to an authorised collection point. Protect your environment. Take care not to spill oil.
