Commander 400 Settings With K799 Hi-Freq./K930-1 Tig Module - Lincoln Electric COMMANDER 400 SVM133-B Service Manual

B-11
Table B.3 TYPICAL CURRENT RANGES
Tungsten
Electrode
Diameter
in. (mm)
0 .010 (.25)
0.020 (.50)
0.040 (1.0)
1/16 (1.6)
3/32 (2.4)
1/8 (3.2)
5/32 (4.0)
3/16 (4.8)
1/4 (6.4)
1 When used with argon gas. The current ranges shown must be reduced when using argon/helium or pure helium shield-
ing gases.
2 Tungsten electrodes are classified as follows by the American Welding Society (AWS):
Pure
1% Thoriated
2% Thoriated
Though not yet recognized by the AWS, Ceriated Tungsten is now widely accepted as a substitute for 2% Thoriated
Tungsten in AC and DC applications.
3 DCEP is not commonly used in these sizes.
4 TIG torch nozzle "sizes" are in multiples of 1/16ths of an inch:
TIG torch nozzles are typically made from alumina ceramic. Special applications may require lava nozzles, which are
5
less prone to breakage, but cannot withstand high temperatures and high duty cycles.
COMMANDER 400 SETTINGS WHEN USING THE
K799 HI-FREQ UNIT
1. Set the OUTPUT RANGE switch to the 50-575 setting
(Fabrication and General Purpose).
2. Set the IDLER switch to the "HIGH " position.
3. Set the LOCAL/REMOTE switch to the "REMOTE"
position.
4. Set the WELDING TERMINALS switch to the "WELD-
ING TERMINALS ALWAYS ON" position.
close the solid state contactor and provide an always
"hot" electrode.
(Note: This is necessary because the K799 circuitry with
respect to the #2 and #4 leads does not provide the prop-
er signal to open and close the solid state contactor in the
Commander).
OPERATION
DCEN (-) DCEP (+)
1%, 2% 1%, 2%
Thoriated Thoriated
Tungsten Tungsten
2-15 3
5-20
3
15-80 3
70-150 10-20
150-250 15-30
250-400 25-40
400-500 40-55
500-750 55-80
750-1000 80-125
EWP
EWTh-1
EWTh-2
# 4 = 1/4 in.
# 5 = 5/16 in.
# 6 = 3/8 in.
# 7 = 7/16 in.
# 8 = 1/2 in.
#10 = 5/8 in.
This will
COMMANDER 400
1
FOR TUNGSTEN ELECTRODES
Approximate Argon Gas Flow Rate
C.F.H. (l/min.)
Aluminum Stainless Steel
3-8 (2-4) 3-8 (2-4)
5-10 (3-5) 5-10 (3-5)
5-10 (3-5) 5-10 (3-5)
5-10 (3-5) 9-13 (4-6)
13-17 (6-8) 11-15 (5-7)
15-23 (7-11) 11-15 (5-7)
21-25 (10-12) 13-17 (6-8)
23-27 (11-13) 18-22 (8-10)
28-32 (13-15) 23-27 (11-13)
(6 mm)
(8 mm)
(10 mm)
(11 mm)
(12.5 mm)
(16 mm)
COMMANDER 400 SETTINGS WHEN USING THE
K930-1 TIG MODULE
1. Set the OUTPUT RANGE switch to the 50-575 Setting
(Fabrication and General Purpose).
2. Set the IDLER switch to the "AUTO " position.
3. Set the LOCAL/REMOTE switch to the "REMOTE"
position.
4. Set the WELDING TERMINALS switch to the "WELD-
ING TERMINALS REMOTELY CONTROLLED" posi-
tion. This will keep the solid state contactor open and
provide a "cold" electrode until the triggering device
(Amptrol or Arc Start switch) is pressed.
B-11
2
TIG TORCH
Nozzle
Size 4,5
#4, #5, #6
#5, #6
#6, #7, #8
#8, #10