OPERATING & MAINTENANCE INSTRUCTION MANUAL
MODELS 427A (R-1), 428A (R-2), AND 429A (R-3) WELD HEADS
REV. AB
MODEL 514 TUBEMASTER OR 515/516 PIPEMASTER POWER SUPPLY
21
THESE DOCUMENTS, AND THE CONTAINED INFORMATION HEREIN, ARE PROPRIETARY AND ARE NOT TO BE REPRODUCED, USED OR DISCLOSED TO
OTHERS FOR MANUFACTURE OR FOR ANY OTHER PURPOSE, EXCEPT AS SPECIFICALLY AUTHORIZED, IN WRITING, BY MAGNATECH, LLC
7.6
Filler Wire Feed Module
A modular wire feed device can be mounted on each model of Weld Head for applications calling for filler
material. Wire feed rate is adjustable from 0 to 1900mm/minute (75IPM) inches per minute. The wire spool
mount is an integral component of the wire feed module. This mounts a special spool of filler wire weighing
0.16 kg (0.35 lb). Standard wire diameter is 0.8mm (.030").
7.7
Weld Head Weight
The Weld Heads have the following weights:
R-1 427A: 3.9 kg (8.5 lbs.)
R-2 428A: 5.4 kg (12 lbs.)
R-3 429A: 9.0 kg (20 lbs.)
7.8
Clearance Requirements
The Redhead Series of Weld Heads is composed of a U-shaped frame with a projecting handle (the handle
encloses the torch rotation motor). The open end of the U-shaped frame is slipped over the tube or pipe to
be welded. Clamping functions, as well as torch rotation functions, are incorporated into the mechanism of
the U-shaped frame. The maximum tube or pipe size that can be welded is determined by the I.D. of the U-
shaped frame. As the frame is rigid, the radial clearance requirement between the pipe to be welded and
the nearest adjacent structure is a function of the width of the U-shaped frame, and the workpiece diameter.
Weld Head dimensions are given in.
Table 4 - Head Dimensions
R-1
427A Head
R-2
428A Head
R-3
429A Head
A. Torch C.L to Rear Extremity
127mm (5.0”)
127mm (5.0”)
127mm (5.0”)
B. Torch C.L to Front Extremity
10mm (0.41”)
10mm (0.41”)
10mm (0.41”)
C. Width
140mm (5.5”)
191mm (7.5”)
280mm (11.0”)
Table 5 - Radial Clearance
R-1
427A Head
R-2
428A Head
R-3
429A Head
[140mm (5.5”) – Pipe O.D.]
÷2 = Radial Clearance
[191mm (7.5”) – Pipe O.D.]
÷2= Radial Clearance
[280mm (11.0”) – Pipe O.D.]
÷2= Radial Clearance
