ESAB Nozzle and Jaw Assemblies Troubleshooting instruction

F-9784-F
INSTRUCTIONS for
I. INTRODUCTION
In submerged arc welding, the welding current is transferred
from the welding cable to the welding wire through a copper
busbar and either a contact nozzle or contact jaws. Nozzles
are usually preferred for sheet metal welding or where the
wire must be carried to a confined space. Contact jaws are
preferred when welding with tube or high alloy wires and
where heavy currents and continuous duty cycles are re-
quired. Various extensions are available (Fig. 16) for guid-
ing the welding wire to unusually distant weld joints.
In all the following assemblies, with the exception of the
dual-wire contact nozzle assembly, the same wire guide,
busbar, and busbar adaptor are used. The wire guide is
screwed into the upper end of the busbar adaptor, and the
adaptor is inserted into the busbar. When the shoulder on
the adaptor contacts the busbar, secure the busbar in place
by tightening the hex nut onto the capscrew (No.
6134-0188) supplied with each busbar.
Il. ASSEMBLY INSTRUCTIONS
A. Busbar and Straight Nozzle Assemblies - Part Nos
Nos. 28V38 and 636841
The busbar and straight nozzle assembly is recommended
for welding in narrow and confined spaces. The straight
nozzle has a current carrying capacity of approximately
1200-amperes maximum. If a straightener is included in an
installation, a slight amount of curvature imparted to the
welding wire after it emerges from the straightener is
recommended.
The busbar and straight nozzle assembly consists of the
Standard wire guide, busbar, and busbar adaptor, plus a
converting nozzle (7/8- to 5/8-in. thread), a 5-in. and ?-in.
(except for assembly 636841, see Fig. 1) extension, tipnut,
insulating sleeves, and two cable lugs. Table | lists all the
contact tips which can be used with the busbar and straight
nozzle assemblies.
To assemble:
l. Screw the 7/8-in. threaded end of the converting nozzle
{Figure E), into the busbar adaptor. Slip on the corres-
ponding insulator sleeve.
. Screw one extension onto the bottom of the converting
nozzle. Tighten, and slip on the corresponding insulator
sleeve,
3. Screw the second extension (not supplied with P/N
636841) onto the mounted extension. Tighten, and slip
on itsinsulating sleeve. (If additional extensions are used,
allach them in the same manner.)
4. Select the proper size tip for the welding wire to be used,
and insert the tip into the tip nut so that the flared end
bo
Be sure this information reaches the operator.
You can get extra copies through your supplier.
HISTORY COPY
DO NOT
FORM 9784-F
DECEMBER, 1977
WOLZLE and
JAW ASSEMBLIES
for use with
EH-1, EH-2, SH-2, EH-10, &
EH-11 WELDING HEADS
WIRE = ——@
BUSBAR ADAPTOR
7/8"-14
Oo
7/8"-14
NT
INSULATOR CONVERTI
SLEEVE NOZZLE
5/8"-11
S-IN. _
INSULATOR 9 5-IN. EXTENSION
SLEEVE
5/8"-11
4
2- IN. EXTENSION
, CONTACT TIP
5/9"-11
TIP NUT
*NOT SUPPLIED WITH EITHER ASSEMBLY
@NOT SUPPLIED WITH ASSEMBLY 636841
FIG. 1 — Exploded View of Busbar and
Straight Nozzle Assemblies
of the contact tip is flush against the end of the exten-
sion when attached. Table 1 lists all the tips that can be
used with this assembly. The wire size is stamped on
each tip.
5. The cable lugs provided for connecting the welding cable
to the nozzle assembly can be fastened by bolting them
to any of the tapped holes in the busbar.
WELDING
Ad PRODUCTS
SAFETY PRECAUTIONS
WARNING: These Safety Precautions are for your protection. Before
performing any installation or operating procedures, be sure to read and
follow the safety precautions listed below. Failure to observe these
Safety Precautions can result in personal injury or death.
1. PERSONAL PROTECTION - - Skin and eye burns resulting from
body exposure to the electric-arc welding rays or hot metal can be
more severe than sunburn. Therefore:
Use a proper face shield fitted with the correct filter and cover
plates to protect your eyes, face, neck and ears from sparks and
rays of the welding arc when welding or observing welding.
WARN bystanders not to watch the arc and not expose them-
selves to the welding-arc rays or to hot metal.
Wear flameproof gauntlet type gloves, heavy long-sleeve shirt,
cuffless trousers, high-topped shoes and a welding helmet or cap
for hair protection to protect the skin from arc rays and hot
sparks or hot metal. A flameproof apron may also be desirable
as protection against radiated heat and sparks.
Hot sparks or metal can lodge in rolled up sleeves, trouser cuffs
or pockets. Sleeves and collars should be kept buttoned, and
pockets eliminated from the front of clothing.
. Protect other nearby personnel from arc rays and hot sparks
with a suitable non-flammable partition.
Always wear safety glasses or goggles when in a welding area.
Use safety glasses with side shields or goggles when chipping slag
or grinding. Chipped siag is hot and may travel considerable
distances. Bystanders should also wear safety glasses or goggles.
2. FIRE PREVENTION - - Hot slag, or sparks, can cause serious fires
when in contact with combustible solids, liquids or gases. There-
fore:
3. ELECTRICAL SHOCK - -
Remove all combustible materials wel! away from the welding
area or completely cover the materiais with a non-flammable
covering. Such combustibte materials include wood, clothing,
sawdust, gasoline, kerosene, paints, solvents, natural gas, acety-
lene, propane and similar combustible artictes.
Hot sparks or hot metal can fall into cracks in floors or wall
openings and cause a hidden smouldering fire. Make certain that
such openings are protected from hot sparks and metal.
Do not weld, cut or perform other hot work on used barrels,
drums, tank or other containers until they have been completely
cleaned so that there are no substances in the container which
might produce flammable or toxic vapors.
For fire protection, have fire extinguishing equipment handy for
instant use, such as a garden hose, water pail, sand bucket or
portable fire extinguisher.
After completion of welding, inspect the work area to make cer-
tain there are no hot sparks or hot metal which could cause a
later fire.
Voltages of 110 volts or less can cause
severe burns to the body or fatal shock. Severity of electrical shock
is determined by the path and amount of current through the body.
Therefore:
b.
Never allow live metal parts to touch bare skin or any wet
clothing. Be sure gioves are dry.
When standing on metal or welding in a damp area, make certain
that you are well insulated by wearing dry gloves and rubber-
soled shoes and standing on a dry board or platform.
Always ground the welding machine by connecting a ground
wire between the machine and a good electrical ground.
Do not use worn or damaged welding cables. Do not overload
the cable. Use well maintained equipment.
When not welding, turn off the equipment. Accidental ground-
ing can cause overheating and create a fire hazard. Do not coil
or loop the welding cable around parts of the body.
Be sure the ground cable is connected to the workpiece as
close to the welding area as possible. Grounds connected to
building framework or other remote locations from the welding
area increase the possibility of the welding current passing
through lifting chains, crane cables or various electrical paths.
Keep everything dry, including clothing, work area, welding
cables, electrode holder and welding machine. Fix water leaks
immmediately.
4. VENTILATION - - Welding fumes, particularly in confined spaces,
can cause discomfort and physical harm if breathed over an extend-
ed period of time. Therefore:
а.
d.
5. EQUIPMENT MAINTENANCE --
At all times provide adequate ventilation in the welding area by
natural ventilation or mechanical ventilation means. Do not weld
on galvanized, zinc, lead, beryllium or cadmium materials unless
positive mechanicat ventitation is provided to prevent breathing
fumes from these materials.
. Do not weld in locations close to chlorinated hydrocarbon va-
pors coming from degreasing or spraying operations. The heat or
arc rays can react with solvent vapors to form phosgene, a highly
toxic gas, and other irritant gases.
If you develop momentary eye, nose or throat irritation during
wetding, this is an indication that ventilation is not adequate.
Stop work and take necessary steps to improve ventilation in the
welding area. Do not continue to weld if physical discomfort
persists.
Refer to AWS Standard 249.1 in item 6 for specific ventilation
recommendations.
Faulty or improperly maintained
welding equipment can result in poor welding work, but most im-
portantly it can cause physical injury or death through fires or
electrical shock. Therefore:
a.
Whenever possible, have qualified personnel perform the installa-
tion, troubleshooting and maintenance work on the welding
machine. Do not perform any electrical work on the welding
machine unless you are qualified to perform such work.
. Before performing any maintenance work inside the welding
machine, disconnect the machine from the electrical power
source.
Maintain welding cables, grounding wire and connections, power
cord and welding machine in safe working order. Do not aperate
the welding machine or equipment in a faulty condition.
Do not abuse the welding machine or accessory equipment. Keep
the equipment away from heat sources such as furnaces, wet
conditions such as water puddles, oil or grease, corrosive atmos-
pheres and inclement weather.
Keep all safety devices and cabinet covers in position and in
good repair.
Use the welding machine for its intended purpose and do not
modify it in any manner.
6. ADDITIONAL SAFETY INFORMATION - - For more information
on safe practices for setting up and operating electric welding equip-
ment and on good working habits, ask for a copy of Linde's “Pre-
cautions and Safe Practices for Electric Welding and Cutting”,
Form 52-529. The following publications which are available fram
the American Welding Society, 2501 N.W. 7th Street, Miami, FL.
32125, are recommended to you:
a.
b.
с.
"Safety in Welding and Cutting” - AWS 249.1
"Recommended Safe Practices for Gas-Shielded Arc Welding”
- AWS A6.1
"Safe Practices for Welding and Cutting Containers That Have
Held Combustibles”” - AWS A6.0.
a
{
Insert for
Be sure this information reaches the operator.
You can get extra copies through your supplier. F-9784-F
October, 1979
IMPORTANT CHANGES
in
NOZZLE AND JAW ASSEMBLIES
IMPORTANT: Beginning in October, 1979 the 2-inch extension and the 2-inch
insulator sleeve will no longer be supplied with the Busbar and Straight Nozzle
Assembly (P/N 28V38) but will be listed as an optional accessory. Also in
October, the Busbar and Straight Nozzle Assembly, P/N 636841, will be discon-
tinued.
WELDING
AN: 01 PRODUCTS UNION CARBIDE CORPORATION
LINDE DIVISION
89-0802 10/79 8c Box 6000, Florence, SC 29501
TABLE 1 — CONTACT TIPS
Wire Diameter (Inches) Contact Tip Part No.
1/16 19N45
3/32 19N47
1/8 19N48
5/32 19N49
3/16 19N50
1/4 19N51
B. Busbar and Curved Nozzle Assembly -
Part No. 28V25
The curved nozzle is preferred for sheet metal weld-
ing and non-positioned fillet welding. The curve in
the nozzle permits the ‘‘trailing’’ of the nozzle along
the weld joint. A maximum of 1200-amperes welding
current is recommended when using a curved nozzle.
The busbar and curved nozzle assembly consists of the
standard wire guide, busbar, and busbar adaptor, plus a
curved nozzle assembly and two cable lugs. The curved
nozzle assembly consists of a 25-degree curved nozzle, tip
nut, and insulator sleeves. A separate curved nozzle assembly
which will handle 3/16-, and 1/4-in. wire is available under
Part No. 19V53. Table 2 lists the components of each
curved nozzle assembly.
To assemble:
1. Screw the 7/8-in. threaded portion of the extension
adaptor (Figure 2}, intothe busbar adaptor. Tight-
en and slip on the corresponding insulator sleeve.
2. Screw the curved nozzle into the bottom of the exten-
sion adaptor and tighten the locknut. Slip on the nozzle
insulator sleeve. For sheet metal welding, attach the
curved nozzle so that the large-diameter portion of the
nozzle is away from the weld zone, (nearest the exten-
sion adaptor). For fillet welding attach the nozzle so
that its large-diameter portion is near the weld zone
(fartherest away from the extension adaptor). The
arrangement pictured in Figure 2, illustrates the connec-
tion preferred for fillet welding.
3. Select the proper size contact tip for the welding
wire to be used, and insert the tip into the tip nut
so that the flared end of the tip will contact the
curved nozzle when the nut and tip are attached.
Attach the tip and nut tothe nozzle and tighten.
4. The cable lugs provided with the assembly for
connecting the welding cable to the busbar, can be
fastened by bolting to any of the three tapped holes
in the busbar.
WIRE GUIDE
À BUSBAR ADAPTOR
$8
BUSBAR
7/8"-14
©: OO?
aE. +
Ww 7/8"-14
€ 2-IN EXTENSION
ir ADAPTOR
Em
2-1N. INSULATOR
SLEEVE X
: CURVED NOZZLE
ASSEMBLY
(INCLUDES PARTS
(MARKED $)
*NOT SUPPLIED
Y CONTACT TIP*
WITH ASSEMBLY
FIG, 2 ~ Exploded View of Busbar and
Curved Nozzle Assembly
# INSULATOR
SLEEVE
# TIP NUT
C. Busbar and Contact Jaw Assembly -
Part No. 28V 24
The busbar and contact jaw assembly consists of the stand-
ard wire guide, busbar, and busbar adaptor, plus a jaw
holder assembly, and three cable lugs.
Contact jaws are preferred for applications requiring
heavy welding currents or continuous duty cycles,
especially when there are no space limitations in the
TABLE 2 — CURVED NOZZLE ASSEMBLIES
Part No,
19V52* 19V 53
3/32" to 3/16" to
Description 5/32" wire | 1/4" wire
Includes:
Curved Nozzle ............ 19V50 19V51
Insulator Sleeve ,..... vers 41W99 41 W939
Tip Nut... nun 19N43 19N43
Locknut..,...,....... on... 5/8—11 5/8—11
| io
* Included ín Busbar and Curved Nozzle Assembly, 28V 25,
weld zone. The use of a wire straightener 1s recom-
mended when using contact jaws, to remove any re-
sidual curvature that may be present in the welding
wire. The maximum current capacity of the contact
jaw assembly is 2000-amperes.
The contact jaws must be used in pairs. Each jaw has
one or two grooves machined in each side, and can be
reversed end-for-end within the jaw holder, to make
use of the spare grooves when the grooves on one side
have become too worn to be of further use. Table
3 lists the proper size jaw to use for a particular
wire diameter,
To assemble:
1, Screw the contact jaw holder assembly into the
busbar adaptor (Figure 3) and secure in the de-
sired position with the locknut.
2. Slide the proper size jaws (See Table 3) between the
jaw holder and the copper braids. (Figure 4 illustrates
a partial breakdown of jaws and jaw holder assembly for
eference purposes.) It may be necessary to relieve some
of the pressure applied on each side of the jaw holder by
the two springs. To do so, loosen the four screws, illus-
trated in Figure 4.
3. Align the jaw wire grooves with the central holes
in the jaw holder,
4. Bolt the jaw holder to each jaw withthe jaw mount-
ing screws supplied with the jaws. Use the upper
hole in each jaw for this connection.
WIRE GUIDE 3
, a BUSBSAR ADAPTOR
BUS BAR
$ 7/8"-14
Оо
JAW HOLDER
ASSEMBLY
(SEE FIG. 4)
*NOT SUPPLIED WITH ASSEMBLY CONTACT JAW *
FIG. 3 - Exploded View of Busbar and
Contact Jaw Assembly — 28V24
9. Connect a copper braid to each jaw with the moum-
ing screws supplied. Use the center hole of each
jaw for this connection.
6. Connect the welding cable to the busbar by bolt-
ing the three cable lugs supplied with the assem-
bly into the three tapped holes in the busbar,
7, To replace jaws - make certain that all power
is turned off. Remove the old jaws by reversing
the procedure outlined in steps 2 thru 5 above,
Install the new jaws as outlined in steps 2 thru 5
above.
D. Busbar and Contact Jaw Assembly -
Part No. 29V66
This assembly is similar to 28V24 and is capable of feeding
wires up to 1/4-in. diameter. It consists of a larger wire
guide, busbar and busbar adaptor, plus a 2-in. and 5-in.
extension, a jaw holder assembly, and three cable lugs. See
Table 3 for the proper size jaws to be used.
The two extensions have been inserted between the
busbar and the jaws to extend the "reach” of the jaw
assembly when it is used with a CM-37 Carriage
mounted on the workpiece,
Assembly instructions for 29V66 are similar to
those for 28V24, See Figure 8 for an illustration of
this assembly,
TABLE 3 — CONTACT JAWS (2 required)
Wire Diameter (Inches) Part No,
1/16 & 3/32 22N29
1/8 22N30
5/32 22N31
3/16 22N32
1/4 | 22N33
14) SPACER
(235PRING
(4) SLEEVE
(4) SCREW
(2) JAW (SEF TABLE 3}
(4) J4W MOUNTING
SCREW
HOLDER
\ {2) COPPER BRAID
(SCREW
FIG. 4 — Partial Breakdown of Jaw Holder Assembly
MA en
E. Busbar and Heavy-Duty Nozzle Assembly —
Part No. 28V39
The busbar and heavy-duty nozzle assembly consists of the
standard wire guide, busbar, and busbar adaptor, plus a
2-in. and a 5-in. extension, a converting nozzle (7/8- to
5/8-in. thread), and three cable lugs.
The straight nozzle is recommended for welding in
narrow, confined locations at heavy welding currents.
it is not advisable to use a wire straightener when
nsing the heavy-duty nozzle. If one is already in-
cludec in the installation, it is recommended that a
slight curvature be put into the wire purposely, after
it leaves the straightener. The heavy-duty nozzle
will handle a maximum of 2000-amperes welding
current.
The nozzle extensions used with the heavy-duty noz-
zleassembly are 1-1/4-in.in diameter, as compared
with the i-in. diameter extensions used with the bus-
bar and straight nozzle assembly treated in Para-
graph A. The increase in area serves to better
dissipate the additional heat present when welding
with heavy welding currents. These same extensions
can be used with the contact jaw assemblyif desired,
where heavy currents are the normal occurance.
To assemble:
1. Serew one end of either extension into the busbar
adaptor (Figure 5). Tighten, and slip on the cor-
responding insulator sleeve.
2. Add the second extension by screwing into the bot-
tom of the previously installed extension. Slip on
its insulator sleeve.
3. Screw the 7/8-in. threaded end of the converting
nozzle into the bottom of the last extension. Slip
on the nozzle insulator sleeve. (The hole in the
insulator sleeve provides a positive means of
connecting a voltage pickup lead to the welding
nozzle.)
4, Choose the proper size contact tip (Table 4) for
the wire size to be used, and screw it onto the
threaded end of the converting nozzle.
5. Connect the welding cable tothe busbar by bolting
the three lugs supplied intothe tapped holes of the
busbar.
The busbar and heavy-duty nozzle assembly also in-
cludes a clamp and insulator (not shown in illustra-
tion}, which permits the attachment of a nozzle guide
wheel and a composition gate. Instructions for in-
stalling these components can be found in Form 9758,
“Accessories Used With UEH-1, UEH-2, and USH-2
Welding Heads."
TABLE 4 — ONE-PIECE CARBIDE INSERT CONTACT TIPS
Wire Diameter (Inches) Contact Tip Part No,
3/32 16N46
1/8 16N47
5/32 16N48
3/16 16N49
1/4 16N50
WIRE GUIDE ——p
| BUSBAR ADAPTOR
BUSBAR
7/8 -14
5 —1М EXTENSION
N EI a
5-IN
INSULATOR
SLEEVE
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Ber
2-IN
INSULATOR
SLEEVE 7/8'-14
CONVERTING
NOZZLE
INSULATOR
SLEEVE 5/8"- 11
*NOT SUPPLIED
WITH ASSEMBLY
CONTACT TIP*
FIG. 5 - Exploded View of Busbar and Heavy-
Duty Nozzle Assembly — 28V39
F. Busbar and Deep-Groove Nozzles
Specially designed nozzles are available for welding
in deep, narrow grooves where standard nozzles are
too large. These deep-groove nozzles are 7/16 x
3/4-in. in cross section as compared to 1- and 1-
1/4-in. O.D. for the standard and heavy duty nozzles.
The standard wire guide, busbar, and busbar adaptor
are used with the deep-groove nozzles, plus a 2-in.
extension adaptor (the same as used with the curved
nozzle assembly), which reduces the 7/8-in. thread
of the busbar adaptor to the 5/8-in. thread of the
nozzie. The nozzle is designed with an offset bend
which ensures positive contact between the nozzle
and the welding wire, just before the wire emerges
from the nozzle. A locknut (not included) allows the
nozzle to be locked in any position desired. Figure 6
illustrates a typical arrangement of the deep groove
nozzle. Table 5 lists the proper deep-groove nozzle
to use for a particular wire size.
TABLE 5 - DEEP-GROOVE CONTACT NOZZLES
Deep-Groove Nozzle
Wire Diameter (Inches) Part No.
1/8 22N77
5/32 22N78
3/16 22N79
1/4 _ 22N80
BUSBAR ADAPTOR
7/8"-14
2-IN EXTENSION
ADAPTOR
DEEP GROOVE
NOZZLE
G. Busbar and Dual-Wire Nozzle Assembly —
Part No. 29V63
The busbar and dual-wire nozzle assembly consists
of the standard busbar and cable lugs, plus a specially
designed wire guide, wire guide tubes, nozzle, insula-
tor sieeve, and tip nut. The dual-wire contact tips
must be ordered separately.
The dual-wire assembly is recommended for twin wire or
parallel electrode applications and can be turned through a
90-degree arc for tandem or transverse welding. The wire
guide contains two spaced wire holes and is designed to fit
the standard busbar and the clamp of the pressure roll and
accessory support assemblies included with the EH-1, EH-2,
and SH-2 welding heads. Stainless steel wire guide tubes are
used to pass the wire from the wire guide to the contact
tip where the wires pick up the welding current.
Three nozzles are available for enclosing the wire guide
tubes: a 2-1/2-in. nozzie, a 5-in. nozzle, and a 7-1/2-in. noz-
zle, the others must be ordered separately. The wire guide
tubes are available in the same lengths as the nozzles. Only
the 7-1/2-in. guide tubes are supplies with the standard
assembly. In addition, special 36-in. lengths of tubing are
available for extra long dual-wire assemblies. Table 6 lists
the nozzles, extensions, wire guide tubes, and insulator
sleeves available for dual-wire welding. Figure 7 illustrates
the order in which the components of the busbar and dual-
wire nozzle assembly are connected.
TABLE 6 — DUAL-WIRE NOZZLE COMPONENTS
FIG. 6- Exploded View of Busbar and Deep-Groove Nozzle
Description Part No.
Nezzle, 2-1/2-n.................,...:::. 22N73
Nozzle, 5-in.................:.::.:..:.. 22N18
Nozzle, 7-1/2-in.. 0... ee es 22N19!
Nozzle Extension, 5-in. ................... 21N46
Wire Guide Tube (2 req'd.}, 2-1/2-in.. .......... 22N 74
Wire Guide Tube (2 req'd.), 5-in. ............. 22N20
Wire Guide Tube (2 req'd.), 7-1/2-in. .......... 22N21
Wire Guide Tube, 36-in. ................... 22N43
Insulator Sleeve, 5-in..................,.... 24N53
Insulator Sleeve, 7-1/2-4n................... 22N54)
- — „-
a
#
WIRE GUIDE Sy
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+7 WIRE GUIDE TUBE
as
NOZZLE
INSULATOR SLEEVE
TIP NUT
3. Select the proper tip from Table 7 and insert into the
tip nut. Position the tip nut containing the tip so that
the wire guide tubes extend into the spaced holes of
the tip, and screw the tip nut up tight. Be careful to
maintain the desired wire position when tightening the
tip nut.
4. Connect the welding cables to the busbar by bolt-
ing the lugs supplied with the busbar, to the tapped
holes in the busbar.
TABLE 7 ~ DUAL-WIRE SPACED CONTACT TIPS
Spaced Tips Part No.
Wire Diameter | 1/4-in. | 5/8-in. | 3/8-in. | 5/16-in,
(Inches) centers|centers| centers | centers
5/64 22N09
3/32 22N10 | 22N12
1/8 22N11 22N13 | 22N44 22N46
5/32 22N47 22Ni4 | 22N45 22N48
FIG. 7 — Exploded View of Busbar and
Duai-Wire Nozzie Assembly
To assemble:
1. Insert the wire guide tubes into the holes in the
bottom of the wire guide. Where this assembly
is made directly on a welding head, use the ex-
tended welding wires as guides in the proper lo-
cation of the wire guide tubes.
2. Screw the nozzle onto the bottom of the wire guide
and hand-tighten. Slide the corresponding insula-
tor sleeve onto the nozzle, If additional nozzle
extensions are used, attach them one to the other,
and slip on the corresponding insulator sleeves.
H. Interchangeability of Nozzles and Jaws
Figure 8 illustrates the interchangeability of the noz-
zle and jaw assemblies covered in the previous par.
agraphs. As was indicated, the same wire guide,
busbar, and busbar adaptor is used in all assem-
blies, with the exception of the dual-wire nozzle and
busbar and contact jaw assembly 29V66, The dual-
wire nozzle assembly however, does use the same
busbar as all the others. Thus if the customer wish-
es to change from one nozzle or jaw arrangement to
another, it is necessary only to change those items
not common to every desired assembly.
Several of the extensions can be used in different
arrangements. Ás long as thread sizes are matched,
all the same diameter extensions are interchangeable
between assemblies. For example, the extensions
used with the straight nozzle assembly can also be
used with the contact jaw assembly 28V24 without
any extra items required. The heavy-duty nozzle
extensions can also be used with the contact jaw
assembly 28V24 without any adapting. The exten-
sions supplied with the busbar and straight noz-
Zle assembly are also usable with the deep-groove
nozzle when desired.
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III. Replacement Parts Information
HOW TO ORDER REPLACEMENT PARTS
1. All replacement parts are keyed on the drawings which follow. Two types of numbers are used on these
drawings:
A, Standard Part Numbers, These are usually formed by two pairs of digits with a letter between (for
example: 01N21, 18V69). A few parts have straight digit sequence (3389) or one letter followed by
several digits (A-854221). Each standard part numberis accompaniedby a descriptive word or words.
B. Hardware Numbers. These usually have eight digits (for example: 6110-1904). Hardware numbers
are usually accompanied on drawings by a one word description.
2. Order standard parts by part number and part name, as shown on drawings. DO NOT ORDER BY PART
NUMBER ALONE.
3. Forhardware, lookup part numbers in the hardware listbelow. "Hardware
‘items can usually be purchased
locally. When ordering hardware from Linde, be sure to include the complete description given in the hard -
ware list. Do not order hardware by the symbol alone,
4, When ordering, be sure to state quantity of each part needed.
wi
Indicate any special shipping instructions,
6. Order replacement parts from the Linde Region Office nearest you.
WIRE GUIDE —28N31
ed ADAPTOR~29N20
+
— m
BUSBAR—29N19
[INCLUDES)
SCREW-6134-0188
SCREW-No. 10-32 x 3/8"
cD
| <>
A
NUT—1/2-13
Be WASHER—1/2”’
NOZZLE Po 7 Sen EN. 8-32 x 3/8"
cy im
2921 TOY INS. SLEEVE
| AL 16N40
р 1-7
b] 1
И
2,
Le
миг
5" EXTENSION—41W30
S INS SLEEVE-41W76
т
2" INS. SLEEVE—41w99 A
| Accessories Not Supplied
1 5/32" WIRE
Tp} 9N48 1/8" WIRE
19N50 346" WIRE
hans! 1/4" WIRE
à
D'EXTENSION
41W98
RE ad
SN
С,
BUSBAR—ZINIY 2 O |
INCLUDES) tat ———
SCREW-6134-0188 TS
SCREW-No. 10-32 x 3/8"
PARTS SUPPLIED
PART NO. [QUANIDESCRIPTION |
93W78 2 [LUG
à sin Ext, & Sleeve Not 1/2—13 x 3/41 2 [SCREW
Supplied Witn 636841. | 1/2” 2_ [WASHER
WIRE GUIDE-28N 31
|
| ADAPTOR—29N20
A
O
|
NUT—-1/2-13 ADAPTOR -29N22
WASHER—1/2"
NOZZLE ASSEM./257)
19V52 a
Y
7
; i
4
|
/
Accessories Not
Supplied
1947 1132 wire
TIP419N48 1/8" WIRE
ISNAS Sfr wire
PARTS SUPPLIED
PART NO. [QUAN] DESCRIPTION
93\78 2 {LUG
1/2—13х 3/4’'| 2 |SCREW
1/2" 2 {WASHER
FIG. 9 — Busbar and Straight Nozzle Assembly — 28V38
Busbar and Straight Nozzle Assembly — 636841
FIG. 10 — Busbar ond Curved Nozzle Assembly — 28V25
WIRE GUIDE
WIRE GUIDE-23N31 24N18
: ADAPTOR - 24N21
ADAPTOR-29N20 al © |p
5"SLEEVE — 29N25 \_ BUSBAR — 29N19
eusear=29ni9 0 ( INCLUDES)
(INCLUDES! | ? ATENSIONT 2220, À SCREW 61240188 3/8”
SCREW-6134-0188 oe SCREW—No. 10- x
SCREW—No, 10-32 x 3/8" o" SLEEVE — 29N24 y “> WASHER—1/2
NUT—1/2—13 a NUT-1/2-13
WASHER- 1/2" 2"EXTENSION-24N1I9—~ fb Ч
№... q
y р CONTACT JAW HOLDER
1 р x ASSEMBLY- 29V68
CONTACT Tr m SEE FIG.14
JAW HOLOER ASSEM—_
29V54 al O O .
(SEE NOTE) Accessories Not [Lo 5
Accessories Not LT Supplied LEE
Supplied 21 1 CONTACT JAWS O (
' a Pe en PAT
22431 5/52 22N30 (1/87 ==
JAWS422N30 18" 22N31 5/32}
cenóe 346 22N 32 (3/16)
22033 1/4 PARTS SUPPLIED 22033 (1/4) PARTS SUPPLIED
NOTE: ==> a E PART NO [QUAN DESCRIPTION
TO USE 2954 WITH ACCESSORIES ; S3W78 à LUG
THAT HAVE 5/8"-11 THREAD USE 11213 Xx 3/4" 3 [SCREW 1/2713 x 3/4") 3 SCREW
ADAPTOR 22N38 | 172" | 3 [WASHER | 1/2” 3 [| WASHER
FIG. 11 — Busbar and Contact Jaw Assembly — 28V24 FIG. 12 — Busbar and Contact Jaw Assembly — 29V66
~~ WIRE GUIDE— 2 4N18
ADAPTOR— 24N21
BUSBAR-29NI9
(INCLUDES)
SCREW—6134-0188 O ()
SCREW-No.—32 x 3/8"
NUT--1/2-13 3
--E-1-- - TE
С ee
WASHER -1/2” 274
КР
| A
5" EXTENSION—24N20 р ГИ
р FtG. 13 — Busbar and Heavy-Duty Nozzle
5" SLEEVE~29N25 ЕТ Assembly ~ 28V39
u,
| nies |
2" EXTENSION—24N19 A
LAU
MS
2" SLEEVE-29N24 u |
EIN SCREW-6130-3877
NozzLe-2on2i—— | LCR y
a
Den
——
Lt 2
SLEEVEAENIO
| Accessories Not Supplied
TIP 16№49 3/46" WRE
IGNSO 1/4’ WIRE
PARTS SUPPLIED |
PART NO. JOUAN. [| DESCRIPTION
93W7B 3 [LUG :
1/2—13 x 3/4") 3 [SCREW
1/2" 3 | WASHER
10
(4) SLEEVE
22N37
—
— 1)
———%
[O
(4) SPACER-22N26
4
a
и.
FT
( A d (4)SCREW—No. 10-24 x 3/4"
=> Lg. Pan Head
LOCKNUT-16N83
(2}SPRING — 22N25
N, (4)WASHER
No. 10 Cad. PI.
(2)SCREW-5/16-18
BAR — 26N10
SPACER
(2)COPPER BRAID-12W88
(2)SCREW—5/16—18 x 1/2”
CONTACT JAW- ACCESSORY-SEE TABLE—3
‘
2N24 f29V54)
\ 2
HOLDER | 24N17 (29/68)
(4) SCREW-22N27
aw Holder Assembly, Part No. 29¥54
Jaw Holder Assembly, Part No. 29V68
FIG. 14 1}
INSERT GUIDE ASSEMBLY-29V 72
29N48 {SEE INSERT)
{2ISCREW
6134-0842 BUSBAR-29N19
(INCLUDES)
SCREW-No. 10-32 x 3/8"
| NUT-1/2-13
239Na7 WASHER—1/2”
INSERT NOZZLE- 22N19
ACCESSORIES-CONTACT
(2} TUBE WIRE PART
22N21
71/27 SLEEVE
24N54
NUT-21N48
TIP
¡(SEE TABLE} -
1/2—13 x
1/2?"
FIG. 15 — Busbar and Dual Wire Nozzle Assembly — 29V63
11
WIRE GUIDE BUSBAR
ADAPTOR | |
ml и
ADAPTOR — 24N85
EXT. TUBE —16N72
NOZZLE/TIP
NUT—16N83
\ ins SLEEVE \ ns SLEEVE
16N73
29N24
FIG. 16 — Extensions for Sub-Arc Welding Heads
NOZZLE/TIPS AVAILABLE
30 Deg. Curvature 60 Deg. Curvature
Wire Size Part No. Part No.
1/8-in. 16N74 16N78
5/32-in. 16N75 16N79
3/16-in. 16N76 16N80
1/4-in. .. 16N81
5/16-in. - - 16482
ТТ № WELDING
CARBIDE Bate life:
UNION CARBIDE CORPORATION
LINDE DIVISION
Box 6000, Florence, SC 29501
F-9784-F 7-0801 12/77 2M Printed in USA.
Me as PUR eme dir 1
ee EL ur