Bernard 4820G - 4995 installation instructions Installation Instructions

INSTALLATION INSTRUCTIONS

1.Quick Disconnect Feeder End may be connected directly to a Bernard adaptor by threading quick disconnect directly into adaptor. Make all necessary power, control, and gas connections.

2.Quick Disconnect Feeder End, PN 4920 is supplied with two long guide tubes (PN 478 and 479) of different I.D.’s which must be cut to the proper length.

3. Select the proper guide tube I.D. from the table below.

.023-.052 Electrode Small I.D.

.062-1/8 Electrode Large I.D.

4.Install taper end toward feed rolls. If electrodes below .045 are being used, it may be advisable to grind a chisel point on the tapered end to guide electrode closer to the feed rolls.

5.Procedure to determine cut length for guide tube that extends beyond quick disconnect (Refer to Illustration 1):

A.Mark tube at point even with end of quick disconnect body.

ILLUSTRATION 1	Adaptor	Power Socket
		Mark Here
		Guide Tube
		Quick Disconnect
Control Wires		Body

Gas Hose

GUIDE TUBE BEYOND QUICK DISCONNECT

E - Z FEED QUICK DISCONNECT FEEDER END ADAPTOR KITS 4820G - 4995

B.Remove guide tube.

C.Cut guide tube at a point 1-1/2” toward the taper from the area marked.

D.Reinstall in adaptor and tighten set screw.

6.Procedure to determine cut length for guide tube recessed within quick disconnect (Refer to Illustration 2).

A.With small rule, measure amount guide tube is within quick disconnect body.

B.Using formula below, cut guide tube to proper length. Shorten guide tube from end opposite taper.

C.1-1/2” minus distance measured inside the quick disconnect body equals length to be shortened.

7. Insert the guide tube in the adaptor. Check guide tube length as indicated in Illustration 3 for proper fit and tighten set screw. E-Z Feed Adaptor Kits are supplied with pre-cut guide tubes for specific machines, as indicated below.

ILLUSTRATION 2 Adaptor Guide Tube

	Power Socket
	Quick Disconnect
Control Wires	Body
	Measure
	Gas Hose
GUIDE TUBE WITHIN QUICK DISCONNECT

ILLUSTRATION 3						Adaptor		Guide Tube
								Power Socket
			Control Wires					Quick Disconnect
								Body
							11/2”
								Gas Hose
				PROPER GUIDE TUBE POSITION
	”	”	”		”	”	”
					4	2	4
0”					/	/	/
	4	2	4
				”	1	1	3	”
	1	1	3
	/	/	/	1	1	1	1	2

Bernard

An Illinois Tool Works Company 449 West Corning Road, Box 667 Beecher, Illinois 60401-0667 U.S.A. 708-946-2281 Fax 708-946-6726 800-946-2281 Customer Support 800-646-6726 Fax Orders www.bernard-welding.com

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