ESAB MEK 20C is a portable wire feeder suitable for semi-automatic welding in shielding gases (MIG/MAG) and can be paired with a welding wire cassette of 220 mm. The wire feed rate ranges from 2 to 25 m/min and it has an isolated protective frame which is equipped with slides. Operating parameters are set using the PUA 1 control panel.
ESAB MEK 20C is a portable wire feeder suitable for semi-automatic welding in shielding gases (MIG/MAG) and can be paired with a welding wire cassette of 220 mm. The wire feed rate ranges from 2 to 25 m/min and it has an isolated protective frame which is equipped with slides. Operating parameters are set using the PUA 1 control panel.
Valid for serial no. 918--xxx--xxxx0457 030 027 011127
MEK 20C
Instruction manual Èíñòðóêöèÿ ïî ýêñïëóàòàöèè
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Rights reserved to alter specifications without notice.
Îñòàâëÿåì çà ñîáîé ïðàâî èçìåíÿòü ñïåöèôèêàöèþ áåç ïðåäóïðåæäåíèÿ.
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1 ÒÅÕÍÈÊÀ ÁÅÇÎÏÀÑÍÎÑÒÈ
Ïåðåä íà÷àëîì ìîíòàæà è ýêñïëóà òàöèè âíèìàòåëüíî èçó÷èòå ñîîòâåòñòâóþùèå èíñòðóêöèè.
ÇÀÙÈÒÈÒÅ ÑÅÁß È ÄÐÓÃÈÕ!
ÎÑ ÒÎÐÎÆÍÎ!
ÄÓÃÎ
Â
Àß Ñ
Â
ÀÐÊÀ È ÐÅÇÊÀ ÎÏÀÑÍÛ ÊÀÊ ÄËß ÈÑÏÎ ËÍÈÒÅËß ÐÀÁÎÒ, ÒÀÊ È ÄËß
ÏÎÑÒ ÎÐÎÍÍÈÕ ËÈÖ. ÒÐÅÁÓÉÒÅ ÑÎÁËÞÄÅÍÈÅ
Â
ÑÅÕ ÏÐÀ
Â
ÈË ÁÅÇÎÏÀÑÍÎÑÒÈ,
ÄÅÉÑÒ
Â
ÓÞÙÈÕ ÍÀ ÎÁÚÅÊÒÅ, ÊÎÒÎÐÛÅ ÄÎËÆÍÛ Ó×ÈÒÛ
Â
ÀÒÜ Ñ
Â
ÅÄÅÍÈß ÎÁ ÎÏÀÑÍÎÑÒßÕ,
ÏÐÅÄÑÒÀ
Â
ËÅÍÍÛÅ ÈÇÃÎÒÎ
Â
ÈÒÅËÅÌ Ñ
Â
ÀÐÎ×ÍÎÃÎ ÎÁÎÐÓÄÎ
Â
ÀÍÈß.
ÎÏÀÑÍÎÑÒÜ ÑÌÅÐÒÅËÜÍÎÃÎ ÏÎÐÀÆÅÍÈß ÝËÅÊÒÐÈ×ÅÑÊÈÌ ÒÎÊÎÌ.
S Ñâàðî÷íûé àãðåãàò óñòàíàâëèâàåòñÿ è çàçåìëÿåòñÿ â ñîîòâåòñòâèè ñ äåéñòâóþùèìè íîðìàìè è
ïðàâèëàìè.
S Íå äîïóñêàéòå êîíòàêòà íàõîäÿùèõñÿ ïîä íàïðÿæåíèåì äåòàëåé è ýëåêòðîäîâ ñ íåçàùèùåííûìè
÷àñòÿìè òåëà, ìîêðûìè ðóêàâèöàìè è ìîêðîé îäåæäîé.
S Îáåñïå÷üòå ýëåêòðè÷åñêóþ èçîëÿöèþ îò çåìëè è ñâàðèâàåìûõ äåòàëåé.
S Îáåñïå÷üòå ñîáëþäåíèå áåçîïàñíûõ ðàáî÷èõ ðàññòîÿíèé.
ÄÛÌÛ È ÃÀÇÛ ìîãóò áûòü îïàñíû äëÿ ÷åëîâåêà
S Èñêëþ÷èòå âîçìîæíîñòü âîçäåéñòâèÿ äûìîâ.
S Äëÿ èñêëþ÷åíèÿ âäûõàíèÿ äûìîâ âî âðåìÿ ñâàðêè îðãàíèçóåòñÿ îáùàÿ âåíòèëÿöèÿ ïîìåùåíèÿ, à
òàêæå âûòÿæíàÿ âåíòèëÿöèÿ èç çîíû ñâàðêè.
ÈÇËÓ×ÅÍÈÅ ÄÓÃÈ âûçûâàåò ïîðàæåíèå ãëàç è îæîãè êîæè.
S Çàùèòèòå ãëàçà è êîæó. Äëÿ ýòîãî èñïîëüçóéò å çàùèòíûå ùèòêè, öâåòíûå ëèíçû è çàùèòíóþ
ñïåöîäåæäó.
S Äëÿ çàùèòû ïîñòîðîííèõ ëèö ïðèìåíÿþòñÿ çàùèòíûå ýêðàíû èëè çàíàâåñè.
ÏÎÆÀÐÎÎÏÀÑÍÎÑÒÜ
S Èñêðû (áðûçãè ìåòàëëà) ìîãóò âûçâàòü ïîæàð. Óáåäèòåñü â îòñóòñòâèè ãîðþ÷èõ ìàòåðèàëîâ
ïîáëèçîñòè îò ìåñòà ñâàðêè.
∅ÓÌ - ×ðåçìåðíûé øóì ìîæåò ïðèâåñòè ê ïîâðåæäåíèþ îðãàíîâ ñëóõà
S Ïðèìèòå ìåðû äëÿ çàùèòû ñëóõà. Èñïîëüçóéòå çàòû÷êè äëÿ óøåé èëè äðóãèå ñðåäñòâà çàùèòû
ñëóõà.
S Ïðåäóïðåäèòå ïîñòîðîííèõ ëèö îá îïàñíî ñòè.
ÍÅÈÑÏÐÀ
Â
ÍÎÑÒÈ - - Ïðè íåèñïðàâíîñòè îáðàòèòåñü ê ñïåöèàëèñòàì ïî ñâàðî÷íîìó
îáîðóäîâàíèþ
2 ÂÂÅÄÅÍÈÅ
MEK 20C - ïîðòàòèâíûé ìåõàíèçì ïîäà÷è ïðîâîëîêè ñåðèè À10 ñ ÷åòûðüìÿ
ïðèâîäíûìè ðîëèêàìè, ïðåäíàçíà÷åííûé ä ëÿ ïîëóàâòîìàòè÷åñêîé ñâàðêè â
çàùèòíûõ ãàçàõ (MIG/MAG), ñ âîçìîæíîñòüþ óñòàíîâêè êàññåò ñâàðî÷íîé
ïðîâîëîêè 220 ìì.
Ìåõàíèçì ïîäà÷è ïðîâîëîêè óñòàíîâëåí íà èçîëèðîâàííóþ çàùèòíóþ ðàìó,
îñíàùåííóþ ñàëàçêàìè.
Óñòàíîâêà ïàðàìåòðîâ ïðîèçâîäèòñÿ ñ ïîìîùüþ ïóëüòà óïðàâëåíèÿ PUA 1.
Ïîäðîáíàÿ èíôîðìàöèÿ î ïðèíàäëåæíîñò ÿõ äëÿ áëîêîâ ïîäà÷è
ñâàðî÷íîé ïðîâîëîêè ôèðìû ESAB íà ñòð. 26.
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3 ÒÅÕÍÈ×ÅÑÊÈÅ ÄÀÍÍÛÅ
Ãàáàðèòû 500õ195õ3000
Âåñ 14 kg.
Ñêîðîñòü ïîäà÷è ïðîâîëîêè 2-25 ì/ìèí
Íàïðÿæåíèå ñåòè 42V 50-60 Hz
Ïîòðåáëÿåìàÿ ìîùíîñòü 300 VÀ
Òèï ðàçúåìà ê ñâàðî÷íîé ãîðåëêå EURO
4ÓÑÒÀÍÎÂÊÀ
Ââîä â ýêñïëóàòàöèþ äîëæåí ïðîèçâîäèòüñÿ êâà ëèôèöèðîâàííûì
ñïåöèàëèñòîì.
ÂÍÈÌÀÍÈÅ!
Íàñòîÿùåå èçäåëèå ïðåäíàçíà÷åíî äëÿ ïðîìûøëåííîãî èñïîëüçîâàíèÿ. Ïðè
èñïîëüçîâàíèè â á ûòîâûõ óñëîâèÿõ îíî ìîæåò ñîçäàâàòü ðàäèî÷àñòîòíûå ïîìåõè.
Ïîëüçîâàòåëü îòâå÷àåò çà ïðèíÿòèå ñîîòâåòñòâóþùèõ ìåð ïðåäîñòîðîæíîñòè.
4.1 Ñîãëàñóþùåå ñîïðîòèâëåíèå
Ñîãëàñóþùèå ñîïðîòèâëåíèÿ äîëæíû áûòü óñòàíîâëåíû ñ îáîèõ êîíöîâ
êàáåëÿ óïðàâëåíèÿ ñèñòåìû «CAN-BUS» âî èçáåæàíèå ïðîáëåì ñ
êîììóòàöèåé. Áëîê óïðàâëåíèÿ PUA-1 èìååò âñòðîåííîå ñîïðîòèâëåíèå. Íà
ïîäàþùèé ìåõàíèçì è âûïðÿìèòåëü îíî óñòàíàâëèâàåòñÿ îòäåëüíî.
Ñîãëàñóþùåå ñ îïðîòèâëåíèå äîëæíî áûòü óñòàíîâëåíî òàê, êàê ýòî
ïîêàçàíî íèæå â çàâèñèìîñòè îò òðå áóåìîé ñõåìû ïîäê ëþ÷åíèÿ
ñâàðî÷íîãî îáîðó äîâàíèÿ.
1. Áëîê óïðàâëåíèÿ PUA-1 ïîäê ëþ÷åí ê ïîäàþùåìó ìåõàíèçìó.
Ñîãëàñóþùåå ñîïðîòèâëåíèå äîëæíî áûòü
ïîäêëþ÷åíî ê ðàçúåìó íà çàäíåé ïàíåëè
âûïðÿìèòåëÿ.(ßâëÿåòñÿ còàíäàðòíî
óñòàíîâëåííûì â ñîñòîÿíèè ïîñòàâêè).
2. Áëîê óïðàâëåíèÿ PUA-1 ïîäê ëþ÷åí ê âûïðÿìèòåëþ.
Ñîãëàñóþùåå ñîïðîòèâëåíèå äîëæíî áûòü
ïîäêëþ÷åíî ê ðàçúåìó íà ïåðåäíåé ïàíåëè
ïîäàþùåãî ìåõàíèçìà.
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5 ÎÁÑËÓÆ ÈÂÀÍÈÅ
ÎÑÒÎÐÎÆÍÎ !
Ñîáëþäàéòå îñòîðîæíîñòü! Âðàùàþùèåñÿ äåòàëè ìîãóò íàíåñòè
òðàâìû!
Ä ëÿ ïðåäîòâðàùåíèÿ ñîñêàëüçûâàíèÿ êàòóøêè ñ ïðîâîëîêîé ñî
âòóëêè çàôèêñèðóéòå åå ïîâîðîòîì êðàñíîé êíîïêè êàê ïîêàçàíî
íà ðèñóíêå ðÿäîì ñî âòóëêîé.
ÏÐÅÄÓÏÐÅÆÄÅÍÈÅ !
Íàñòð
î
é
ê
àóñèëèÿï
î
äà÷è ïð
î
â
î
ë
î
ê
è
Ïðåæ äå âñåãî óáåäèòåñü â òîì, ÷òî ïðîâîëîêà áåñïðåïÿòñòâåííî äâèæåòñÿ
÷åðåç íàïðàâëÿþùèå. Ïîñëå ýò îãî óñòàíîâèòå óñèëèå, ñîçäàâàåìîå
ðîëèêàìè ïîäà÷è ïðîâîëîêè. Ïîìíèòå, ÷òî ýòî óñèëèå íå äîëæíî áûòü
÷ðåçìåðíûì.
Ðèñ. 1 Ðèñ. 2
Äëÿ ïðîâåðêè ïðàâèëüíîñòè óñòàíîâêè óñèëèÿ ïîäà÷è ïîìåñòèòå êàêîé-ëèáî
òâåðäûé ïðåäìåò, íàïðèìåð, äåðåâÿííûé áðóñîê íà ïóòè ïîäà÷è ïðîâîëîêè.
Ïðè ðàññòîÿíèè ïðèìåðíî 5 ìì îò ïèñòîëåòà ä ëÿ ïîäà÷è ïðîâîëîêè äî
äåðåâÿííîãî áðóñêà (ðèñ. 1) ïîäàþùèå ðîëèêè äîëæíû ïðîñêàëüçûâàòü.
Ïðè ðàññòîÿíèè ïðèìåðíî 50 ìì ïðîâîëîêà äîëæíà ïîäàâàòüñÿ è ñãèáàòüñÿ
ïðè óïîðå â áðóñîê (ðèñ. 2).
Cêîðîñòü ïîäà÷è ïðîâîëîêè è íàïðÿæ åíèå
Ñâàðî÷íûå ïàðàìåòðû (ñêîðîñòü ïîäà÷è ïðîâîëîêè è íàïðÿæåíèå)
âûñòàâëÿþòñÿ íà áëîêå óïðàâëåíèÿ PUA 1 â ðåæèìå óñòàíîâîê è èçìåðåíèé.
Åñëè âû õîòèòå âåñòè ðåãóëèðîâêó ñâàðî÷íûõ ïàðàìåòðîâ ñ ïàíåëè ïîäàþùåãî
ìåõàíèçìà, òî ïåðåêëþ÷àòåëü âíóòðè ïîäàþùåãî ìåõàíèçìà íåîáõîäèìî
ïåðåâåñòè â âåðõíåå ïîëîæåíèå, à áëîê óïðàâëåíèÿ PUA 1 â ðåæèì
äèñòàíöèîííîãî óïðàâëåíèÿ.
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Äèñòàíöèîííîå óïðàâëåíèå
Äëÿ èñïîëüçîâàíèè ïóëüòà äèñòàíöèîííîãî óïðàâëåíèÿ, ïåðåêëþ÷àòåëü
âíóòðè ïîäàþùåãî ìåõàíèçìà äîëæåí íàõîäèòñÿ â ñîîòâåòñòâóþùåì
ïîëîæåíèè, è íà áëîêå óïðàâëåíèÿ PUA 1 òàêæå äîëæåí áûòü àêòèâèðîâàí
ðåæèì äèñòàíöèîííîãî óïðàâëåíèÿ. Åñëè âû õîòèòå èçìåíèòü ï àðàìåòðû
ñâàðêè ñ ïîìîùüþ áëîêà óïð àâ-ëåíèÿ PUA 1, âû äîëæíû ïåðåêëþ÷èòü ðåæèì
äèñòàíöèîííîãî óïðàâëåíèÿ â ðåæèì èçìåðåíèÿ è óñòàíîâîê.
5.1 Ïîäêëþ÷åíèå
1 Ðàçúåì ñèñòåìû âîäÿíîãî
îõëàæäåíèÿ
6 Ðàçúåì ïóëüòà óïðàâëåíèÿ
2 Ðàçúåì ñèñòåìû âîäÿíîãî îõëàæäåíèÿ 7 Ð àçúåì ñâàðî÷íîé ãîðåëêè
3 Ãà ç î â û é ø ò ó ö å ð 8 Ðó÷êà ðåãóëèðîâêè ñêîðîñòè ïîäà÷è
ïðîâîëîêè
4 Ðàçúåì êàáåëÿ óïðàâëåíèÿ 9 Ðó÷êà ðåãóëèðîâêè ñâàðî÷íîãî
íàïðÿæåíèÿ
5 Ðàçúåì ñâàðî÷íîãî êàáåëÿ 10 Ðàçúåì áëîêà óïðàâëåíèÿ PUA-1
3
4
1
5
6
7
8
9
10
2
1
2
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6 ÎÁÑËÓÆ ÈÂÀÍÈÅ
Ïðèìå÷àíèå:
Âñå ãàðàíòèéíûå îáÿçàò åëüñòâà ïîñòàâùèêà òåðÿþò ñèëó â ñëó÷àå ïîïûòêè
ïîêóïàòåëÿ ñàìîñòîÿòåëüíî óñòðàíèòü êàêóþ-ëèáî íåèñïðàâíîñòü ìàøèíû â
òå÷åíèå ãàðàíòèéíîãî ïåðèîäà.
6.1 ÎÑÌÎÒÐ È ×ÈÑÒÊÀ
Òåõíè÷åñêîå îáñëóæèâàíèå íåîáõîäèìî äëÿ ïîääåðæàíèÿ áåçîïàñíîé è
íà äåæíîé ðàáîòû ìåõàíèçìà.
S ×èñòêà è çàìåíà èçíàøèâàþùèõñÿ äåòàëåé ìåõàíèçìà äîëæíà
ïðîèçâîäèòñÿ ñâîåâðåìåííî âî èçáåæàíèå ïðîáëåì ñ ïîäà÷åé ïðîâîëîêè.
S Îáðàòèòå âíèìàíèå, ÷òî óñòàíîâêà èçáûòî÷íîãî äàâëåíèÿ ïðèæèìà
ðîëèêîâ ïðèâîäèò ê ïîâûøåííîìó èçíîñó ïðèæèìíîãî, ïîäàþùåãî
ðîëèêîâ è í àïðàâëÿþùåãî êàíàëà ñâàðî÷íîé ãîðåëêè.
Òîðìîçíàÿ âòóëêà.
Òîðìîçíàÿ âòóëêà ðåãóëèðóåòñÿ ïåðåä
ïîñòàâêîé èçäåëèÿ. Ïðè íåîáõîäèìîñòè
ïîâòîðíîé ðåãóëèðîâêè ïðèäåðæèâàéòåñü
óêàçàíèé ïðèâåäåííûõ íèæå. Ïðè ïðàâèëüíî
îòðåãóëèðîâàííîé òîðìîçíîé âò óëêå
ïðîâîëîêà äîëæ íà íåñêîëüêî
ïðîâèñàòü ïîñëå îñòàíîâêè ïîäà÷è.
S Ðåãóëèðîâêà òîðìîçíîã î óñèëèÿ:
S Óñòàíîâèòü êðàñíóþ ðóêîÿòêó â ïîëîæåíèå áëîêèðîâêè
S Âñòàâèòü î òâåðòêó â ïðóæèíû èìåþùèåñÿ âî âòóëêå.
Äëÿ óìåíüøåíèÿ òîðìîçíîãî óñèëèÿ ïîâåðíóòü ïðóæèíû ïî ÷àñîâîé
ñòðåëêå.
Äëÿ óâåëè÷åíèÿ òîðìîçíîãî óñèëèÿ ïîâåðíóòü ïðóæèíû ïðîòèâ ÷àñîâîé
ñòðåëêè. Ïðèìå÷àíèå: Îáå ïðóæèíû ñëåäóåò ïîâîðà÷èâàòü íà
îäèíàêîâîå ÷èñëî îáîðîòîâ.
7 ÇÀÊÀÇ ÇÀÏÀÑÍÛÕ ×ÀÑÒÅÉ
Çàïàñíûå ÷àñòè çàêàçûâàþòñÿ ÷åðåç áëèæàéøåå ïðåäñòàâèòåëüñòâî ESAB,
à äðåñ êîòîðîãî ìîæíî íàéòè íà ïîñëåäíåé ñòðàíèöå îáëîæêè.
Ïðè çàêàçå çàïàñíûõ ÷àñòåé óêàæèòå òèï ìàøèíû è åå íîìåð, à òàêæå
íàèìåíîâàíèå äåòàëè è åå íîìåð èç ïåðå÷íÿ çàïàñíûõ ÷àñòåé. Ýòî óïðîñòèò
äîñòàâêó è îáåñïå÷èò ïîëó÷åíèå òðåáóåìûõ çàïàñíûõ ÷àñòåé.
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TOCe
1 DIRECTIVE 10........................................................
2SAFETY 10...........................................................
3 INTRODUCTION 10...................................................
4 TECHNICAL SPECIFICATION 11.......................................
5 INSTALLATION 11....................................................
5.1 Termination resistance 11.....................................................
6 OPERATION 12.......................................................
6.1 Connection 13...............................................................
7 MAINTENANCE 14....................................................
7.1 Inspection and cleaning 14....................................................
8 ORDERING OF SPARE PARTS 14......................................
DIAGRAM 15............................................................
SPARE PARTS LIST 17...................................................
ACCESSORIES 26.......................................................
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bm22d12e
1 DIRECTIVE
DECLARATION OF CONFORMITY
ESAB Welding Equipment AB, S--695 81 Laxå, Sweden, declares that Wire feed unit MEK 20C from
serial number 710 onwards, conforms to standard EN 60974--5, in accordance with the requirements
of directive (73/23/EEC) and appendix (93/68/EEC) and standard EN 50199 in accordance with the
requirements of directive (89/336/EEC) and appendix (93/68/EEC).
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Paul Karlsson
Managing Director
ESAB Welding Equipment AB
695 81 LAXÅ
SWEDEN Tel: + 46 584 81000 Fax: + 46 584 12336
Laxå 97--11--10
2SAFETY
WARNING
READ AND UNDERSTAND THE INSTRUCTION MANUAL BEFORE INSTALLING OR OPERATING.
ARC WELDING AND CUTTING CAN BE INJURIOUS TO YOURSELF AND OTHERS. TAKE PRECAU-
TIONS WHEN WELDING. ASK FOR YOUR EMPLOYER’S SAFETY PRACTICES WHICH SHOULD BE
BASED ON MANUFACTURERS’ HAZARD DATA.
ELECTRIC SHOCK -- Can kill
S Install and earth the welding unit in accordance with applicable standards.
S Do not touch live electrical parts or electrodes with bare skin, wet gloves or wet clothing.
S Insulate yourself from earth and the workpiece.
S Ensure your working stance is safe.
FUMES AND GASES -- Can be dangerous to health
S Keep your head out of the fumes.
S Use ventilation, extraction at the arc, or both, to take fumes and gases away from your breathing zone
and the general area.
ARC RAYS -- Can injure eyes and burn skin.
S Protect y our eyes and body. Use the correct welding screen and filter lens and wear protective
clothing.
S Protect bystanders with suitable screens or curtains.
FIRE HAZARD
S Sparks (spatter) can cause fire. Make sure therefore that there are no inflammable materials nearby.
NOISE -- Excessive noise can damage hearing
S Protect y our ears. Use earmuffs or other hearing protection.
S Warn bystanders of the risk.
MALFUNCTION -- Call for expert assistance in the event of malfunction.
PROTECT YOURSELF AND OTHERS!
3 INTRODUCTION
MEK 20C is a portable wire feed unit with four--roller drive, designed for MIG/MAG
welding in conjunction with Esab’s A10 wire feed system . T he wire feed unit can
accommodate a 200 mm diameter wire reel.
The wire feed unit is mounted on an insulated protective frame equipped with
runners.
The wire feed unit is controlled from the PUA1 controller, see additional information
under Operation.
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Details of ESAB’s accessories for the wire feed units can be found on page
26.
4 TECHNICAL SPECIFICATION
Dimensions lxwxh 500x195x300
Weight 14 kg
Wire feed speed 2-- 25 m/min
Voltage 42V 50--60Hz
Power consumption 300 VA
Torch connection EURO
5 I NSTALLATION
The in stallatio n must b e executed by a professional.
WARNING!
This product is intended for industrial use. In a domestic environment this product may cause radio
interference. It is the user’s responsibility to take adequate precautions.
5.1 Termination resistance
The termination resistance must be connected to the ends of the CAN bus to prevent
communication problems. The controller has a built--in terminator, but the power
source and wire feed unit do not.
The terminator should be fitted as follows depending on how the units are
connected:
1. Controller connected to wire feed unit.
The termination resistance must be connected to the
rear of the power source.
(Already connected this way on delivery).
2. Controller connected to power so u rce.
The termination resistance must be con-
nected to the front of the wire feed unit.
GB
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bm22d12e
6 OPERATION
General safety regulations for the handling of the equipment can be found on
page 10. Read through before you start using the equipment!
WARNING!
Rotating parts can cause injury, take great care.
To prevent the reel sliding off the hub: Lock the reel in place by turning
the red knob as shown on the warning label attached next to the hub.
WARNING!
Setting the wire feed pressure
Start by making sure that the wire moves smoothly through the wire guide. Then
set the pressure of the wire feeder’s pressure rollers. It is important that the
pressure is not too great.
Fig 1 Fig 2
To check that the feed pressure is set correctly, you can feed out the wire against
an insolated object, e.g. a piece of wood.
When you hold the pistol approx. 5 mm from the piece of wood (fig. 1) the feed
rollers should slip.
If you hold the pistol approx. 50 m m from the piece of wood, the wire should be
fed out and bend (fig. 2).
The wire feed speed and voltage
The wire feed speed and voltage can be adjusted using the PUA1 controller in set and
measure modes. If you want to use the potentiometers on the front of the wire feed unit
then the toggle switch inside the wire feed unit must be in the upper position and the
PUA1 controller should be set for remote operation.
GB
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bm22d12e
Remote control
To use a remote control, the toggle switch inside the wire feed unit must be switched
to remote, and the PUA1 controller must also be set to remote, as above. If you want
to change the wire feed and voltage parameters using the controller, you must switch
from “remote“ to measure m ode or set mode.
6.1 Connection
1 Nipple, cooling water (only certain models) 6 Connector, remote control
2 Nipple, cooling water (only certain models) 7 Adapter, welding torch
3 Nipple, gas connection 8 Potentiometer, wire feed speed
4 Connector , control cable 9 Potentiometer, welding voltage
5 Adapter , welding current 10 Connector setting control PUA1
3
4
1
5
6
7
8
9
10
2
1
2
GB
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bm22d12e
7 MAINTENANCE
Note:
All warranty undertakings given b y the supplier cease to apply if the customer
attempts to rectify any faults on the machine during the warranty period.
7.1 Inspection and cleaning
Regularly maintenance is important for reliable and safe operations.
S Cleaning and replacement of the wire feed mechanism’s wear parts should take
place periodically to ensure trouble free wire feed.
S Note that an excessive pressure setting can r esult in abnormal wear on the
pressure roller, feed roller and wire liner
The brake hub
The hub is adjusted when delivered, if
readjustment is required, follow the instructions
below. Adjust the brake hub so that wire is slightly
slack when wire feed stops.
S Adjusting the braking torque:
S Turn the r ed handle to the locked position.
S Insert a screwdriver into the springs in the hub.
Turn the springs clockwise to reduce the braking torque
Turn the springs anticlockwise to increase the braking torque. NB: Turn both
springs through the same amount.
8 ORDERING OF SPARE PARTS
Spare parts are ordered through your nearest ESAB representative, see back cover.
When ordering spare parts, please state machine type and number as well as desig -
nation and spare part number as shown in the spare parts list.
This will simplify dispatch and ensure you get the right part.
GB
Diagram Ñõåìà
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M
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K
20C
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Spare p arts list Ñïèñîê çàïàñíûõ ÷àñòåé
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cmek3se2
Valid for serial no. 710--xxx--xxxx to serial no. 918--xxx--xxxx
Ordering numbers for MEK 20C
0456 980 880 MEK 20C without water connection
0456 980 881 MEK 20C with water connection
Spare parts are to be ordered through the nearest ESAB agency as per the list on the back of the
cover. Kindly indicate type of unit, serial number, denominations and ordering numbers according to
the spare parts list.
Maintenance and repair work should be performed by an experienced person, and electrical work only
by a trained electrician. Use only recommended spare parts.
M
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Item Qty Ordering No. Denomination Notes
101 1 0156 388 001 Handle
102 1 0457 135 001 Handle
103 2 0457 120 001 Handle
104 1 0366 561 001 Hinge
105 1 0456 971 001 Bottom plate New design from the first half year 1999.
If item 403b is fitted to the machine it must be replaced by item
403a when the bottom plate is replaced.
106 1 0469 474 003 Brake hub
107 1 0456 973 001 Intermediate plate
108 1 0456 972 001 Panel plate New design from the first half year 1999.
If item 407b is fitted to the machine it must be replaced by item
407a when the panel plate is replaced.
109 2 0457 338 001 Washer
110 2 0457 263 001 Profile
111a 1 0456 975 001 Cover left
111b 1 0456 974 001 Cover right
112 1 0457 325 880 Protection frame
113 2 0469 223 001 Slide bar
114 2 0367 902 001 Locking device
115 10 0194 019 003 Spacer
117 8 0153 043 002 Bushing Insulated
M
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C = component designation in the circuit diagram
Item Qty Ordering No. Denomination Notes C
201 1 0160 609 881 Welding currenr terminal
202 1 0467 911 881 Capacitor 0.1ìF, 250V C4
203 1 0469 832 880 Current bar Insulated
204 1 0456 979 001 Sign plate
205 1 0147 866 001 Toggle switch SA1
206 1 0368 544 005 Socket, Burndy 23--pole XS15
207 1 0455 516 001 Cap
208 1 0365 803 008 Quick connector Red, female
209 1 0365 803 009 Quick connector Blue, female
210 2 0366 285 001 Cap
211 2 0191 870 512 Potentiometer 2.5kÙ
For voltage reference and wire feed reference
212 1 0321 475 887 Knob
213 1 0321 475 889 Knob
214 1 0317 942 001 Planetary gear
215 1 0366 212 001 Arrow
216 1 0318 419 002 Support bracket
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ESAB MEK 20C is a portable wire feeder suitable for semi-automatic welding in shielding gases (MIG/MAG) and can be paired with a welding wire cassette of 220 mm. The wire feed rate ranges from 2 to 25 m/min and it has an isolated protective frame which is equipped with slides. Operating parameters are set using the PUA 1 control panel.
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