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USER’S
MANUAL

KM-250/KM-350 Series

High-Speed, 1-Needle, Drop-Feed
Automatic Thread Trimmer
High-Speed, 1-Needle, Drop-Feed,
Needle-Feed Automatic Thread
Trimmer

KM-506/KM-530 Series

High-Speed 1-Needle, Drop-Feed
Knife-Attached Automatic Thread
Trimmer
High-Speed, 1-Needle, Drop-Feed,
Needle-Feed Knife-Attached
Automatic Thread Trimmer

1) For use with maximum ease,

please be sure to read this manual
thoroughly before use.

2) Keep this manual for reference in

case of machine malfunction or
breakdown.

E--0

Keystone Sewing Machine Company, Inc.
833 N 2nd Street, Philadelphia, PA 19123 USA
215/922.6900
[email protected]
www.keysew.com

Содержание KM-250 Series

Страница 1: ... 1 Needle Drop Feed Knife Attached Automatic Thread Trimmer High Speed 1 Needle Drop Feed Needle Feed Knife Attached Automatic Thread Trimmer 1 For use with maximum ease please be sure to read this manual thoroughly before use 2 Keep this manual for reference in case of machine malfunction or breakdown M MM ME E 0 07 70 04 42 26 6 Keystone Sewing Machine Company Inc 833 N 2nd Street Philadelphia P...

Страница 2: ...rformance powerful operation enhanced durability and more sophisticated design to meet a number of user s needs 2 Please read this user s manual thoroughly before using the machine Make sure to properly use the machine to enjoy its full performance 3 The specifications of the machine are subject to change aimed to enhance product performance without prior notice 4 This product is designed manufact...

Страница 3: ...6 4 Lubrication adjustment of thread take up lever 16 5 Lubrication adjustment of hook 17 6 Inserting lower thread and tension adjustment 18 7 Routing upper thread 18 8 Upper thread adjustment 19 9 Height and tension adjustment of presser foot 20 10 Adjustment of automatic knee lifter 20 11 Stitch length adjustment 21 12 Height and inclination adjustment of feed dog 21 13 Feed cam adjustment 22 14...

Страница 4: ...ved strictly Otherwise the user will be killed or suffer severe physical injuries Instructions here must be observed or the user could suffer fatal or severe physical injuries Instructions here should be observed or the user could face physical injuries or mechanical damages Danger The meaning of marks This mark means a must not This mark means a must for safety This mark means that an electric sh...

Страница 5: ... functional difficulties or breakdowns may occur depending on installation conditions of the machines Be sure to heed the following conditions ⓐ Remove the packing from top to bottom Watch out for nails on the wooden box ⓑ Install a climate controller and clean it regularly to prevent dust and moisture build up from contaminating and corroding the machines ⓒ Keep the machines away from direct sunl...

Страница 6: ...ing work is finished ⓗ Never turn the power switch on with the pedal down ⓘ Do not use the machine if the cooling fan is clogged Clean the air filter embedded in the control box at least once a week ⓙ Keep the machine away from strong electromagnetic fields such as high frequency welding machines 1 4 Machine operation Caution Caution ⓐ Safety label Safety instructions for machine operations ⓑ Thre...

Страница 7: ...360 seconds before opening this cover after turn off main switch and unplug a power cord 고압 전류에 의해 감전될 수 있으므로 커버를 열 때는 전원을 내리고 전원 플러그를 뽑고 나 서 360초간 기다린 후 여십시오 CAUTION 경 고 Do not operate without finger guard and safety devices Before threading changing bobbin and needle cleaning etc switch off main switch 손가락 보호대와 안전장치 없이 작동하지 마 십시오 실 보빈 바늘교환시나 청소전에는 반드시 주전원의 스위치를 꺼 주십시오 CAUTION 경 고 Hazardous volta...

Страница 8: ...feed Series KM 350A 7S KM 350A 7N KM 350B 7S KM 350B 7N KM 350BL 7S forthinmaterials forgeneraluse forthinmaterials forgeneraluse for heavy materials for heavy materials for heavy materials 5 000SPM 4 000SPM 5 000SPM 4 000SPM 4 000SPM 3 000SPM 4 000SPM 3 000SPM 3 200SPM 4 4 5 5 6 manual 5 5 knee 13 manual 5 5 knee 13 manual 5 5 knee 13 manual 5 5 knee 13 manual 5 5 knee 14 DB1 14 9 18 DB1 14 9 18 ...

Страница 9: ...esensingtypeandSEDG 2forthicknesssensingtype A device needed when only one operator runs several sewing machines Pedals for acceleration thread trimming presser foot and ascending are built separately Two types SPDL 1 and EDPL 1 for fixed speed type and SPDL 2 and EDPL 2 for adjustable speed type are available SPF 5 A device that operates with a solenoid by lifting the presser foot automatically a...

Страница 10: ...table connection may result in an electric shock or a malfunction Place the belt cover on top of the machine Use both hands when bending the machine backward or returning it to the normal position Using only one hand can lead to physical injuries due to the weight of the machine 1 Machine head Insert the head hinge into the bed holes and fit it to the rubber hinge Then stand it on the rubber cushi...

Страница 11: ...unused for a long time Fig 3 1 Installation A Attach the resistance box around the motor under the table B Connect the connector from the solenoid to the resistance box as shown in Fig 3 and then connect the line from the resistance box to the control box 3 Resistance box for knee lifting solenoid KM 7N 4 Lubrication 1 Installing Magnetic Chip Remover A Attach the magnetic chip remover that is in ...

Страница 12: ... 5 Belt Tension Adjustment Sufficient loosening of the fixed nuts after motor installation would create tension to the belt Tighten the fixed nut first and then tighten the fixed nut to an unmovable position See Fig 6 Fig 5 Fig 6 6 Program Unit 1 Installing automatic knee lifting solenoid in unit A Use four fixing screws to attach the bracket onto the program unit B Fasten the bracket onto the mac...

Страница 13: ... Fig 8 7 Belt Cover 1 Use the clamp screws in the machine body and the washer to fasten the belt cover A Installation of the belt cover will be easier if the sewing machine is laid down to an appropriate degree See Fig 9 Fig 9 2 Attach the belt cover B to the table Please exercise caution so that the belt does not get jammed inside the belt cover B See Fig 10 Fig 10 Keystone Sewing Machine Company...

Страница 14: ... Location Adjustment of Location Detector 1 For in built location detectors For the needle bar s upper stop position setting loosen the tightening screw on the side of N U punched mark of the pulley and set the white punched mark of the pulley in parallel with the punched mark of the arm at the desired upper stop position by moving the screw sideways For the needle bar s lower stop position settin...

Страница 15: ...to the location of the magnetic holder will be necessary since there may be problems with the trimming In other words the needle s up stop position should be identical with the stop position of the needle bar after the trimming operation which would signify that there is nothing wrong with the operation timing of the trimmer See Fig 18 Refer to the explanation about the Adjustment of Location Dete...

Страница 16: ...he lowest carved sign on the needle bar is in line with the bottom of the needle bar lower bushing and tighten the clamp screws of the needle bar handle Lastly plug in the rubber plugs 3 Timing Adjustment of Needle and Hook As can be seen in Fig 20 align the bottom of the needle bar bushing with the hook fixed position sign marked on the needle bar and loosen the three hook fixing screws Turn the ...

Страница 17: ...k whereas excessive oil would contaminate the sewing material with oil 2 Adjustment of the Oil Supply Level Turn the oil flow adjusting screw in the lower shaft front bushing in a clockwise direction for more oil flow Turn it counterclockwise for less oil Fig 22 Caution Turn off the power when adjusting the lower thread tension If the operator mistakenly steps down on the pedal while switched on t...

Страница 18: ...l out if the handle is let go See Fig 23 7 Routing Upper Thread Place the thread take up lever at the highest position and route the upper thread in the order indicated in Figures 24 and 25 Caution Turn off the power switch when routing the upper thread If the operator mistakenly presses down on the pedal while switched on the machine will start automatically and can cause physical injuries When u...

Страница 19: ...ntrol The thread release takes place simultaneously with the movement of the trimming solenoid As seen in Fig 28 the amount of thread release is controlled by moving the fixed position of the thread release wire which is connected with the clutch lever left and right Loosen the two fixing nuts and pull the cable wire to the left Then fasten the nuts to release the thread to a large extent If the c...

Страница 20: ...ove the top face of the needle plate and tighten the presser bar fixing screws firmly 2 Tension adjustment As described in Fig 29 the tension of the presser foot will grow stronger when the tension adjusting screw is turned clockwise and weaker when turned counterclockwise Make sure to screw in the fixing nut after adjustment 10 Adjustment of Automatic Knee Lifter Optional An automatic knee lifter...

Страница 21: ...e feed dog A To adjust the inclination of the feed dog first loosen the feed dog support shaft fixing screw in the horizontal pushing crank and adjust by turning feed dog support shaft up and down in the direction of the arrow with a driver Turning the feed dog support shaft clockwise will raise the front part of the feed dog while turning it counterclockwise will lower the front part of the feed ...

Страница 22: ...s 14 Adjustment of Needle Movement KM 350 KM 530 Series A If the feed dog movement is faster than the needle movement loosen the feed cam fixing screw and turn the feed cam in the arrow direction and then tighten the feed cam fixing screw B On the other hand if the feed dog movement is slower than the needle movement loosen the feed cam fixing screw and turn the feed cam in the opposite direction ...

Страница 23: ...fixed blade 4 Push the trimming solenoid shaft manually while the trimming cam fixing screw is loose At this point the appropriate distance between the initial trimming cam and the roller single screw is 0 5mm 5 Turn the trimming cam manually so that the edge of the roller driving part on the trimming cam touches the roller Then tighten the trimming cam fixing screw 6 Connect the return spring Fig...

Страница 24: ... Follow these instructions in reverse order to assemble 18 Replacement of Fixed Blade A To change the fixed knife loosen the inner spindle stopper fixing screw as in Fig 41 remove the washer and inner spindle stopper then unfasten the fixed knife fixing screw Follow these instructions in reverse order to assemble B If the edge of the fixed blade is worn make sure to grind the knife edge with an oi...

Страница 25: ...the wiper base and press the connecting link with the hand Then adjust the wiper shaft so that the gap between the wiper and the needle is about 2mm and tighten the wiper shaft fixing screw Next loosen the wiper fixing screw and adjust so that the gap between the lower end of the wiper and the end of the needle is about 2mm after which the wiper fixing screw must be tightly fastened See Fig 45 46 ...

Страница 26: ... forth The adjustable width range of the knife edge is from 2mm forward to 3mm backward from the needle center 3 Adjusting the left right position of the knife A To adjust the left right position of the knife loosen the knife frame fixing screw and move the knife frame sideways B After loosening the knife frame fixing screw and adjusting the knife side so that it would touch the side of the needle...

Страница 27: ...he chip discharge groove in the auxiliary needle plate See Fig 51 Fig 50 Fig 51 1 Disassembly A Loosen the needle fixing screw and remove the needle B Loosen the presser foot fixing screw and separate the presser foot C Loosen the needle plate fixing screw and separate the needle plate D Loosen the feed dog fixing screw and separate the feed dog E Loosen the auxiliary needle plate fixing screw and...

Страница 28: ...t the knife position Move the chip discharge guide lower to the left and right so that it is placed 0 05mm from the knife plate side Then use the fixing screw to fix the position E Adjust the knife frame so that the pressure of the knife and the needle plate side is appropriate Then tighten the fixing screw Refer to the explanation about knife position adjustment F Attach the presser foot and tigh...

Страница 29: ...assing at wrong position Wrong timing of needle and hook Wrong timing of needle and hook Wrong timing of needle and hook Remaining length of upper thread is short Due to bobbin racing during trimming lower thread dropping from bobbin case becomes too short to go up Racing proof spring of bobbin case Unable to lift lower thread due to weak take up lever spring Take up lever spring Reinsert the need...

Страница 30: ...movableandfixedblades Direction of needle Trimming errors 6 Adjust tension of movable and fixed blade Replace movable and fixed blade Reinsert the needle correctly Adjust the stroke of movable and fixed blade Adjust tension of upper thread Check thickness of needle Adjust the up stop position of needle 7 Upper thread is pulled out when sewing commences Too tight upper thread tension Too loose lowe...

Страница 31: ...MEMO Keystone Sewing Machine Company Inc ...

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