Item

Dia.

Part

Description

 

No.

Mkgs.

No.

Quantity

 

 

 

Figure 10-1. Main Assembly (Continued)

 

 

 

 

 

 

. . . . . . . . . .

RC1 . . .

174 824 . .

CONNECTOR & PINS

. . . 1

. . . . . . . . . .

PLG1 . . .

174 823 . .

CONNECTOR & SOCKETS

. . . 1

. . . . . . . . . .

PLG3 . . .

135 275 . .

CONNECTOR & SOCKETS

. . . 1

. . . . . . . . . .

PLG6 . . .

174 823 . .

CONNECTOR & SOCKETS

. . . 1

. . . . . . . . . .

RC6 . . .

174 824 . .

CONNECTOR & PINS

. . . 1

. . . . . . . . . .

PLG9 . . .

168 071 . .

CONNECTOR & SOCKETS

. . . 1

. . . 42 . . . .

C52 . . .

176 007 . .

CAPACITOR, slectl 1200uf 300VDC

. . . 1

. . . 43 . . . .

. . . . . . . . .

176 199 . .

CLAMP, capacitor

. . . 2

. . . 44 . . . .

. 1T . . . .

172 661 . .

BLOCK, stud connection 6posn (consisting of)

. . . 1

. . . . . . . . . .

. . . . . . . . .

173 734 . . .

. JUMPER LINK

. . . 2

. . . 45 . . . .

. . . . . . . . .

172 731 . .

HOLDER, fuse mintr

. . . 2

. . . 46 . . .

F1, F2 . . *169 296 . .

FUSE, mintr gls 25A 125V

. . . 2

. . . 47 . . . .

SR2,3 . .

035 704 . .

RECTIFIER, integ 40A 800V

. . . 2

. . . 48 . . . .

. D2 . . . .

135 184 . .

DIODE, board

. . . 1

. . . 49 . . . .

. C1 . . . .

176 719 . .

CAPACITOR, electl 1000uf 75VDC

. . . 1

. . . 50 . . . .

. . . . . . . . .

177 136 . .

CLAMP, capacitor

. . . 1

. . . 51 . . . .

CT1 . . .

187 144 . .

TRANSFORMER, current sensing

. . . 1

. . . 52 . . . .

R4,5 . . .

139 812 . .

RESISTOR, WW fxd 30W 5K

. . . 2

. . . 53 . . . .

. . . . . . . . .

180 628 . .

PANEL, lower front

. . . 1

. . . 54 . . . .

. . . . . . . . .

Fig 10-2 . .

PANEL, front w/components

. . . 1

. . . 55 . . . .

. . . . . . . . .

197 930 . .

LABEL, warning do not weld on base

. . . 2

. . . . . . . . . .

. F6 . . . . *021 718 . .

FUSE, mintr gl 30A 32V

. . . 1

. . . . . . . . . .

. . . . . . . . .

137 046 . .

TUNE-UP & FILTER KIT, (consisting of)

. . . 1

. . . . . . . . . .

. . . . . . . . .

064 617 . . .

. ELEMENT, air cleaner

. . . 1

. . . . . . . . . .

. . . . . . . . .

065 251 . . .

. OIL FILTER

. . . 1

. . . . . . . . . .

. . . . . . . . .

121 652 . . .

. FILTER/CLAMPS, fuel

. . . 1

. .Optional

. . . . . . . . .

065 709 . . .

. SPARK PLUG

. . . 2

*Recommended Spare Parts.

 

+When ordering a component originally displaying a precautionary label, the label should also be ordered.

To maintain the factory original performance of your Replacement Parts. Model and serial number required

equipment, use only Manufacturer’s Suggested when ordering parts from your local distributor.

 

 

4

 

5

 

 

 

 

 

 

3

 

 

. Hardware is common and

2

 

 

9

not available unless listed.

1

 

 

 

 

 

8

10

 

 

 

 

 

 

11

 

 

 

 

 

 

6

7

12

 

35

 

 

 

 

 

 

34

 

 

14

 

 

 

 

13

 

33

 

 

15

 

32

 

 

16

 

31

 

 

17

 

 

 

 

 

30

 

 

 

 

29

 

 

18

 

 

 

19

 

28

 

 

 

 

 

 

 

 

 

 

20

 

 

23

 

21

 

25

24

 

 

 

26

 

 

22

 

 

 

 

 

27

 

 

 

ST-802 049-B

Figure 10-2. Panel, Front w/Components

OM-486 Page 41

Page 45
Image 45
Miller Electric 251 NT manual Panel, Front w/Components

251 NT specifications

The Miller Electric 251 NT is a highly regarded multi-process welding machine known for its versatility and advanced features, making it an ideal choice for professionals in various industries. With its robust construction and user-friendly interface, the 251 NT provides an efficient solution for MIG, TIG, and Stick welding applications.

One of the main features of the Miller Electric 251 NT is its impressive output range, which allows for welding on a variety of materials and thicknesses. It delivers up to 250 amps of power, enabling users to tackle both thin and thick metals with ease. Additionally, the machine is equipped with an Auto-Set feature, which automatically adjusts the welding settings according to the material thickness and type. This eliminates the guesswork, significantly enhancing productivity and reducing setup time.

Another noteworthy aspect of the Miller Electric 251 NT is its inverter technology. This advanced technology provides a compact, lightweight design without compromising performance. Inverter technology allows for greater energy efficiency, resulting in reduced operational costs over time. The 251 NT also features a Duty Cycle of 60% at 250 amps, which means it can handle demanding tasks while maintaining optimal performance.

The Miller Electric 251 NT is designed with user convenience in mind. The intuitive digital display offers clear visibility of the settings, allowing welders to make quick adjustments. Furthermore, the machine includes a built-in memory function to store frequently used parameters, enhancing workflow efficiency.

Safety is a key component of the 251 NT's design. It comes equipped with various safety features, including overload protection and a thermal overload warning system. These features ensure that the machine operates within safe limits, minimizing the risk of damage and ensuring longevity.

In terms of portability, the Miller Electric 251 NT's lightweight design and integrated handle make it easy to transport between job sites. The durable housing protects the internal components, making it suitable for rigorous use in demanding environments.

Overall, the Miller Electric 251 NT offers a combination of power, flexibility, and ease of use, making it a top choice for welders looking to enhance their capabilities across multiple welding processes. Whether in a professional shop or on a construction site, the 251 NT stands out as a reliable and efficient welding solution.