ESAB Two Roll Drive Accessory Support Assembly Troubleshooting instruction

Brand: ESAB

Model: Two Roll Drive Accessory Support Assembly

Type: Troubleshooting instruction

Be sure this information reaches the operator.

You can get extra copies through your supplier.

These INSTRUCTIONS are for experienced operators. If you are not fully familiar with the principles of operation and

safe practices for arc welding equipment, we urge you to read our booklet, "Precautions and Safe Practices for Arc

Welding, Cutting, and Gouging", Form 52-529. Do NOT permit untrained persons to install, operate, or maintain this

equipment. Do NOT attempt to install or operate this equipment until you have read and fully understand these

instructions. If you do not fully understand these instructions, contact your supplier for further information. Be sure

to read the Safety Precautions on page 2 before installing or operating this equipment.

F-15-632

September, 2000

TWO ROLL DRIVE

ACCESSORY SUPPORT

ASSEMBLY

P/N 49V51

INSTRUCTIONS for

FEATURE/BENEFITS

■ For reducing wire change and pressure reset-

ting time - a quick release clapper with single

adjustment knob allows releasing and resetting

the feed rolls without disturbing the feed roll

pressure setting.

■ Available with “U” groove, Vee hard or serrated

“V” feed rolls and utilizing standard inlet and

outlet guide accessories, this drive is truly uni-

versal in application. combination for your own

specific need.

■ This is the most rugged, time proven wire feed-

ing mechanism on the market.

■ The wedge action of the patented feed roll

transfers drive torque to the welding wire

smoothly and efficiently.

■ Feef rolls are case hardened for longest pos-

sible life.

■ The uni-pressure accessory support can quickly

and easily be mounted on any EH-10A or EH-

10AD motor-gear units for feeding .030 through

1/8-in. diameter wire.

INSTALLATION AND OPERATION

A. INSTALLING THE FEED ROLL

To install the feed roll, proceed as follows:

1. Release the clapper on the accessory support

assembly (Figure 1) by disengaging the retainer

from the clapper fork.

2. Remove thumbscrew, bell washer and flat washer

from the feed roll shaft.

3. Slip the feed roll on the shaft, engaging the key.

Be sure to observe the “THIS SIDE OUT” mark-

ing on the feed roll.

4. Replace flat washer, bellwasher and thumb-

screw, tightening screw sufficiently to eliminate

all end play from the feed roll.

B. INSTALLING INLET AND OUTLET WIRE

GUIDES

1. Inlet guide 29N13 and insert 05N58 are supplied

with the accessory support assembly 49V51

(see Figure 4). They are held in place by rotating

the locking handle on the accessory support.

Note that insert 05N58 should be removed if 7/

64-in. or 1/8-in. cored wire is to be used.

2. An outlet guide is supplied as part of the wire

feed accessories kits for the torch used. The

guide is first attached to the wire feed conduit,

then locked in place in the clamp at the outlet

side of the accessory support assembly.

C. ADJUSTING THE ACCESSORY SUPPORT AS-

SEMBLY

When a new wire size or type is to be used, set the

pressure roll adjusting as follows:

1. Round off the free end of the welding wire with a

file to remove sharp edges and burrs which

might damage the conduit liner.

2. Release the clapper and unscrew the pressure

adjusting knob until the pressure spring is free.

3. Thread the wire through the inlet and outlet

guides of the accessory support, and 3 or 4

inches into the torch conduit.

4. Engage the clapper making sure the wire is held

in the feel roll groove.

5. Tighten the pressure adjusting knob until the

wire is firmly against the feed roll -- do not

overtighten. The spring pressure applied should

be the minimum required to provide positive,

nonslip wire feed. Too little pressure will result in

wire slippage while excessive pressure will scar

and deform the wire. Further adjustment can be

made after the wire feed is put into operation.

Note that a light spring (182W55) is installed on

the accessory support for use with soft and small

diameter hard wire. For larger diameter hard

wire, replace this spring with a heavy spring

(182W54) supplied with the unit.

D. FEEDING WIRE AND ADJUSTMENTS

With wire engaged in the accessory support per

section IV-E, feed wire through torch conduit and

torch as follows:

1. Remove nozzle and contact tip from torch.

2. Operate remote INCH switch until “cold” wire

protrudes from torch front end. Release the

INCH switch.

3. Slide the contact tip over the end of the wire and

secure to torch. Replace the torch nozzle.

4. Reoperate the remote INCH switch and check

for wire feed slippage on the accessory support

assembly. Tighten (or loosen) the pressure ad-

justing knob until the wire feeds smoothly.

5. Refer to the appropriate welding control instruc-

tion booklet for remaining operating procedures.

Table 1. Feed Roll & Outlet Guide Selection

Notes

Flat pressure roll 28V52 recommended for all applications except 3/64 and 1/16 aluminum.

* “U” groove pressure roll, P/N 2075346, is recommended for better performance.

** “U” groove pressure roll, P/N 2075348, is recommended for better performance.

Includes replaceable sleeve P/N 995651

Includes replaceable sleeve P/N 995692

Includes replaceable sleeve P/N 995693

Requires outlet guide insert: .030/.035 yellow P/N 993902

3/64 red P/N 05N57

1/16 white P/N 12N75

3/32 blue P/N 05N58

Fig.1 - Two Roll Drive Accessory Support Assembly - P/N 49V51

KNOB - 60N68

SPRING - 182W54

RETAINER - 58N24

OUTLET GUIDE

(See Table 1 Page 3)

FORK - 49V43

CLAMP - 61N02

CAPSCREW - 5/16" - 18 X 1 3/4"

NUT - 5/16" - 18

SHAFT - 60N65

INLET GUIDE

(See your Torch Instruction Book-

let)

F-15-632 9/2000

CLAPPER ASSY.

60N98

ROLLPIN - 62350066

(1/4 X 1-3/4" LG)

(2) LOCKING HANDLE ASSY. (49V44)

Includes: Bolt - 1/4 x 1 5/8”LG

Spacer - 60N79

SETSCREW

6-32 X 1/4”LG

61330849

PRESSURE ROLL - 28V52

SUPPLIED:

KEY - 29N33

THUMB SCREW - 61351087

WASHER - 64309431

FEEDROLL:

(See Table 1 Page 3.)

ESAB Two Roll Drive Accessory Support Assembly Troubleshooting instruction

ESAB Two Roll Drive Accessory Support Assembly Troubleshooting instruction

ESAB Two Roll Drive Accessory Support Assembly Troubleshooting instruction

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