ESAB Preflow-Postflow Gas Timer Kit Installation guide

Brand: ESAB

Model: Preflow-Postflow Gas Timer Kit

Type: Installation guide

ESAB Preflow-Postflow Gas Timer Kit allows the user to set the length of gas flow before and after welding to protect the weld area. It consists of two timers on a printed circuit board with mounting hardware and pre-connected wires. The kit can be installed in various ESAB wire feeders, including MIG-23 (Series A), -31, -32, 34, 35, and SWM-37. With this kit, users can ensure proper shielding of the weld area and improve weld quality.

The Preflow-Postflow feature allows the operator to set

the length of gas flow both before and after the welding

process to correctly shield the weld area. The kit (994853)

consists of two timers on a printed circuit board with its

own mounting bracket and hardware (four each No. 4-

40NC X 3/8-in. screws, No. 4 lockwashers, No. 4

flatwashers, and nuts). All wires with terminal lugs are part

of the timer board.

TO INSTALL IN MIG-23 (SERIES A), -31, -32, 34, 35 and

SWM-37 WIRE FEEDERS:

Disconnect input power to welder before install-

ing gas timer kit

1. Remove the cover from the wire feeder.

2. Look at the left-side of the wire feeder contain-

ing the printed circuit boards. Proceed as follows:

a. For MIG-23 (Series A): Locate the two 9/

64-in. dia. holes (horizontally spaced 3/4-in.

on centers) on the mounting plate (contain-

ing R1 Resistor) to the right of the terminal

strip. With the component side facing up to-

ward R1 Resistor, mount the timer board in

the two holes with the hardware supplied.

b. For MIG-31, -35: Locate the two 9/64-in. dia.

holes (vertically spaced 3/4-in. on centers)

on the base of the control to the left of the

governor and logic pc boards. With the com-

ponent side facing the governor and logic

pc boards, mount the timer board in the two

holes with the hardware supplied.

c. For Mig-35 w/ 2 roll drive (P/N 953552) with

a serial number of WT-I-928077 or later, or

a Mig-35 w/ 4 roll drive (P/N 677634) with a

serial number of WS-I-928057 or later - Lo-

cate the two studs (spaced on 3/4 in cen-

ters) high on the back of the control to the

right of the governor and logic PC boards.

With the component side facing the gover-

nor and logic pc boards, mount the timer

board in the two holes with the hardware

supplied.

d. For MIG-32: Locate the two 9/64-in. dia.

holes (vertically spaced 3/4-in. on centers)

on the base of the control to the right of the

terminal strip. With the component side fac-

ing the Gas Solenoid Valve, mount the timer

board in the two holes with the hardware sup-

plied.

e. For MIG-34: Locate the two 9/64-in. dia.

holes (vertically spaced 3/4-in. on centers)

on the right-hand side mounting plate above

the terminal strip. With the component side

facing out toward the cover, mount the timer

board in the two holes with the hardware

supplied.

f. For SWM-37: Locate the two 9/64-in. dia.

holes (horizontally spaced 3/4-in. on centers)

on the right-hand side mounting plate below

the terminal strip. With the component side

facing up toward R1 Resistor, mount the

timer board in the two holes with the hard-

ware supplied.

Make the required electrical connections as shown

in) the table below. Make certain you remove the

jumpers as shown in the table.

NOTE: On some earlier models the 9/64-in. holes

referred to, are not predrilled and must be

drilled by customer to mount the timer board.

Simply position the timer board in place

(given above) and mark (with pencil) the two

holes to be drilled.

F-12-508-F

March, 2001

Installing the

PREFLOW-POSTFLOW GAS TIMER KIT

Part No. 994853

Be sure this information reaches the operator.

You can get extra copies through your supplier.

TABLE OF ELECTRICAL CONNECTIONS

Instructions MIG-23 (Series A) MIG-31, -35 MIG -32 MIG -34 SWM -37

1. Remove the following a. between TB 1-4 a. between TB 1-1 a. between TB 1-1 a. between TB 1-1 a. J8 on voltage

jumpers: and TB 1-5 and TB 1-2 and TB 1-2 and TB 1-2 control board*

b. between TB

1-8 b. between TB 1-5 b. between TB1-5 b. between TB 1-5 b. between TB1-6

and TB 1-9 and TB 1-6 and TB 1-6 and TB 1-6 and TB 1-8

2. Connect the following

wires from the kit to the

terminals as shown:

BLACK TB1-1 MLS (bottom ter- MLS (bottom termi- B1-12 TB1-2

minal with black nal with black wire)

wire)

WHITE TB1-9 TB1-6 TB1-5 TB1-5 TB1-6

BLUE TB1-12 TB1-7 TB1-7 TB1-7 TB1-10

BROWN TB1-5 TB1-1 TB1-1 TB1-1 TB1-7

ORANGE TB1-4 TB1-2 TB1-2 TB1-2 TB1-3

YELLOW TB1-6 TB1-4 TB1-4 TB1-4 INCH SW. (termi

nal blue wire)

See sketch on reverse side of sheet.

IMPORTANT: If, after J8 has been cut, the preflow/postflow circuit is to be removed from the SWM-37,

do not attempt to reinstate J8 jumper. Instead, place a jumper between terminals 3 and 7

on terminal board TB1.

Lower Section of SWM-37 Voltage Control Board

F-12-508-F 3/01

This is J8 jumper

ESAB Preflow-Postflow Gas Timer Kit Installation guide

ESAB Preflow-Postflow Gas Timer Kit Installation guide

ESAB Preflow-Postflow Gas Timer Kit Installation guide

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