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7

2.  Insert a torch liner (and support liner, if used) through 

the mounting bracket on the rear of torch until it is 

firmly seated within the torch.

3.  Slip a torch inlet guide tip, of the proper size, over the 

protruding end of the liner and screw it into the end 

of the mounting bracket.

4. With the insulator sleeve (14N14) in place over the 

mounting bracket (step 1-d), insert the bracket into 

the clamp on the accessory support assembly of the 

welding head. Secure the bracket by tightening the 

locking handle on support assembly clamp. Connect 

the service lines to plumbing box, connection block, 

or directly to supply sources using service line exten-

sions and couplings where necessary.

Table 4 - Wire Feed Accessories for Remote Mounting

NOTE: See Tables 1 and 2 for nozzle and contact tube/tip requirements.

 

Wire 

 

 

Conduit* 

 

 

Wire Outlet  Guide 

Outlet

Wire 

Size 

Torch 

 

 

 

 Conduit 

  

 

Guide

type in. Liner 4-ft. 

6-ft. 

10-ft. Liner**  EH-10A 

 Insert

HARD 

.045 

690514 

38V86  39V99 

40V18 

None 

39N15†  

None

 

.052 

690514 

38V86  39V99 

40V18 

None 

39N15†  

None

 

1/16 

690514 

38V86  39V99 

40V18 

None 

39N15†  

None

 

5/64 

993844 

38V89 

40V01 

— 

None 

62N17††  

None

 

3/32 

993844 

38V80 

39V83 

40V20 

None 

62N17††  

None

CORED  .045 

690514 

38V86  39V99 

40V18 

None 

39N15†  

None

 

.052 

690514 

38V86  39V99 

40V18 

None 

39N15†  

None

 

1/16 

690514 

38V86  39V99 

40V18 

None 

39N15†  

None

 

5/64 

993844 

38V89 

40V01 

— 

None 

62N17††  

None

 

3/32 

993844 

39V80 

39V83 

40V20 

None 

62N17††  

None

 

7/64 

— 

39V80  39V83  40V20 

None 

39N16  

None

SOFT 

3/64 

993901 

38V89  40V01 

— 

42V74 

29N13  

05N57

 

1/16 

— 

39V80  39V83  40V20 

42V75 

29N13  

12N75

 

3/32 

— 

39V80  39V83  40N20 

42V73 

29N13  

05N58 

 

*  Requires adaptor, P/N 61N59, in place of torch inlet guide tip (on torch mounting bracket).

**  Conduit liners must be cut to the proper length to allow 1/16-in. clearance between liner and contact tube.

†  Includes replaceable sleeve (995692).

†† Includes replaceable sleeve (995693)

III. INSTALLATION

Depending on the choice of mounting system used, 

either direct or remote, install the wire feed components 

as outlined below and illustrated in Figures 1 and 2.

A. DIRECT MOUNTING TO EH-10A WELDING HEAD 

(Refer to Figs. 1 and 3)

1.  Install the torch mounting bracket (accessory part No. 

633885) on the ST-21M as follows:

  a. Loosen (and if necessary, remove) the setscrew 

located in the recessed hole at the rear of the torch 

barrel.

  b. Place the small spacer tube (633887, supplied) 

into the conduit connection fitting at the rear of the 

torch barrel, and tighten the setscrew to secure the 

tube.

  c.  Slip  the  mounting  bracket,  large  end  first,  over 

the rear torch barrel and the attached spacer and 

then, using the 1/4-in. capscrew supplied, tighten 

the bracket around the torch barrel.

  d. Place the insulator sleeve (14N14, supplied) over 

the end of the mounting bracket.

Содержание ST-21M

Страница 1: ...laced by removing the metal nozzle and unscrewing the tip Six metal nozzles one for spot welding use are available for use with this torch see Table 1 Nozzle sizes 8 and 10 require a spatter liner NOTE Due to the high electrical conductivity use of tap water or commercial anti freeze is NOT recom mended for torch cooling Use of the a coolant circulator using a specially formulated torch coolant P ...

Страница 2: ...ubstances on the workpiece which might produce flammable or toxic vapors Do not do hot work on closed containers They may explode 4 Have fire extinguishing equipment handy for instant use suchasagardenhose waterpail sandbucket orportable fire extinguisher Be sure you are trained in its use 5 Do not use equipment beyond its ratings For example overloaded welding cable can overheat and create a fire...

Страница 3: ... flames Never strike an arc on a cylinder 5 For additional information refer to CGA Standard P 1 Precautions for Safe Handling of Compressed Gases in Cylinders which is available from Compressed Gas Association 1235 Jefferson Davis Highway Arlington VA 22202 EQUIPMENT MAINTENANCE Faulty or improperly maintained equipment can cause injury or death Therefore 1 Always have qualified personnel perform...

Страница 4: ...de grue ou divers chemins électriques PRÉCAUTIONS DE SÉCURITÉ AVERTISSEMENT Ces règles de sécurité ont pour objet d assurer votre protection Veillez à lire et à observer les précautions énoncées ci dessous avant de monter l équipement ou de commercer à l utiliser Tout défaut d observation de ces précautions risque d entraîner des blessures graves ou mortelles 1 PROTECTION INDIVIDUELLE Les brûlures...

Страница 5: ...de ventilation indiquées à l alinéa 6 de la norme Z49 1 de l AWS 5 ENTRETIEN DE L ÉQUIPEMENT Un équipement entretenu de façon défectueuse ou inadéquate risque non seulement de réaliser un travail de mauvaise qualité mais chose plus grave encore d entraîner des dom mages corporels graves voire mortels en déclenchant des incendies ou des chocs électriques Observez par conséquent les précautions suiv...

Страница 6: ...s more than adequate for protecting the torch The Coolant circula tor should be capable of providing at least 6400 BTU hr cooling capacity at 40 C ambient temperature The use of p n 0560950312 TORCH Coolant 50 EG 1GAL is recommended in the coolant circulator NOTE The circulator cannot be set up for solenoid valve shutoff Table 1 ST 21M Nozzles No 8 598739 No 10 598721 No 10L Long Length 598891 No ...

Страница 7: ...9N15 None 1 16 690514 38V86 39V99 40V18 None 39N15 None 5 64 993844 38V89 40V01 None 62N17 None 3 32 993844 39V80 39V83 40V20 None 62N17 None 7 64 39V80 39V83 40V20 None 39N16 None SOFT 3 64 993901 38V89 40V01 42V74 29N13 05N57 1 16 39V80 39V83 40V20 42V75 29N13 12N75 3 32 39V80 39V83 40N20 42V73 29N13 05N58 Requires adaptor P N 61N59 in place of torch inlet guide tip on torch mounting bracket Con...

Страница 8: ...h conduit liner installed if required is to be connected to torch and to wire outlet guide on welding head IV ADJUSTMENT AND OPERATION Before adjustments are made disengage the pressure roll to prevent wire from feeding and arcing to an acci dental ground To set the shielding gas flow rate press the weld start button to open the gas solenoid valve and adjust the flowmeter to the desired flow rate ...

Страница 9: ...M type 1711 adhesive onto the fitting 3 Slide hose clamp 950626 supplied with hose as sembly over the new hose assembly 4 Push the new hose onto the short coolant connection tube of the torch body and tube assembly Position the hose clamp over the grooved section of the short tube 5 Crimp the ear of the hose clamp with pincers as il lustrated below 6 Rotate the hose clamp so that the ear is positi...

Страница 10: ...ICE LINES MAY BE EXTENDED USING COUPLINGS 11N17 GAS 11N18 COOLANT 11N19 POWER COOLANT OUT AVAILABLE SERVICE LINES COOLANT HOSE 3 FT 20634 COOLANT HOSE 12 1 2 FT 40V76 COOLANT HOSE 25 FT 406196 GAS HOSE 3 FT 31504 GAS HOSE 12 1 2 FT 40V77 GAS HOSE 25 FT 34V38 POWER CABLE 12 1 2 FT 40V78 Fig 4 ST 21M Service Line Connection Diagram CAUTION Do not clean the liner while it is assembled in the conduit ...

Страница 11: ...s proceed as follows 1 With power supply turned off disconnect all torch service lines 2 Remove nozzle contact tube and collet nut or contact tip 3 Loosen the two setscrews on locking nut 598787 and pull back torch barrel mounting bracket attached enough to allow the locking nut to rotate freely 4 Unscrew the locking nut from the nozzle body 633881 5 Pull nozzle body away from the wire guide assem...

Страница 12: ... TECHNICAL SERVICE Telephone 800 ESAB 123 Fax 843 664 4452 Part Numbers Technical Applications Hours 8 00 AM to 5 00 PM EST Performance Features Technical Specifications Equipment Recommendations D LITERATURE REQUESTS Telephone 843 664 5562 Fax 843 664 5548 Hours 7 30 AM to 4 00 PM EST E WELDING EQUIPMENT REPAIRS Telephone 843 664 4487 Fax 843 664 5557 Repair Estimates Repair Status Hours 7 30 AM ...

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