Amada TCW, Operation Manual

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CHAPTER 1: SYSTEM DESCRIPTION
THERMOCOUPLE WELDER
990-070 1-5
Wire Gauge Diameter Specifications
The table below defines the maximum outer jacket insulation size for each wire gauge. It does not refer
to the insulation covering each wire.
Nominal
AWG
Wire Size
Diameter
Max Insulation
Diameter
Nominal
AWG
Wire Size
Diameter
Max Insulation
Diameter
inch mm inch mm inch mm inch mm
38 .0040 .1016 .038 0.97 28 .0126 .3200 .055 1.40
37 .0045 .1143 .038 0.97 27 .0142 .3607 .055 1.40
36 .0050 .1270 .038 0.97 26 .0159 .4039 .124 3.15
35 .0056 .1422 .038 0.97 25 .0179 .4547 .124 3.15
34 .0063 .1600 .038 0.97 24 .0201 .5105 .124 3.15
33 .0071 .1803 .038 0.97 23 .0226 .5740 .124 3.15
32 .0080 .2032 .038 0.97 22 .0253 .6426 .159 4.04
31 .0089 .2261 .055 1.40 21 .0285 .7239 .159 4.04
30 .0100 .2540 .055 1.40 20 .0320 .8128 .159 4.04
29 .0113 .2870 .055 1.40
Initiation
The Handpiece must be correctly inserted into the Weld Chamber to initiate firing. The two
thermocouple wires loaded in the Handpiece must touch the Arc Button located inside the Weld
Chamber in order to initiate a weld. The firing sequence ensures that the Handpiece is double earth
grounded for maximum operator safety. Internal power supply filtering prevents premature firing due to
radio frequency interference.
Safety Features
Double earth grounded techniques eliminate the possibility of electrical shock to the operator. The
Handpiece used to hold the thermocouple wires is earth grounded to the TCW chassis using a non-
removable cable. The length of the cable prevents injury to the Handpiece should it fall off a table or
bench that is a minimum of 30 inches high. When the Handpiece is placed in the Weld Chamber, a
solenoid mechanically clamps the Handpiece, creating a second earth ground path.