Hobart Welding Products 252TS, 302 manual

2-8. Slope Selection (250 Ampere Model)

4

7

2

6 5

3

1

1Slope Connection Label

2Tapped Reactor AC-Z And Slope Coils

Tapped reactor AC-Z is factory con- nected to slope tap 8 which is suit- able for most GMAW applications.

AC-Z controls the inductance applied to the weld current. To increase inductance and wet out the weld puddle, connect to a higher tap number. To stiffen the weld puddle, connect to a lower tap num- ber.

3Leads 70, 71 and 72 With Pressure Connectors

Slide pressure connectors onto the same tap of each coil, and secure them.

YAn unbalanced secondary current can damage the main transformer and cause errat- ic weld conditions. Be sure leads 70, 71 and 72 are con-

nected to the same numbered slope turn tap on each coil. See slope connection label .

4Firing Board PC1

5Receptacle RC2

6Lead 36

7Receptacles RC3 Through RC6

Connect lead 36 from RC2 to correct receptacle RC4, RC5, RC6 or RC7 to match tap slope connec- tions made in Section A as follows:

RC3 – 300A (Used With 300A Mod- els Only)

RC4 for 4 turns

RC5 for 6 turns

RC6 for 8 turns

RC7 for 10 turns.

Reinstall right side panel.

SLOPE TURNS

0			0				0
8	6	4		8	6	4		8	6	4
10				10				10

TAP SLOPE CONNECTIONS

IMPORTANT:

Be sure connections are clean

before reconnecting tap.

IMPORTANT:

Move friction lug on PC1 to correct tab to insure proper operation of voltmeter preset.

S-177 763-B

1/2 in

3/8 in

Ref. ST-801 518-A

OM-259 Page 13