Operation, Shutting down – Hot Max Torches VTK-MD User Manual
Page 10
KDAR Company
9
Operation
3. Press the oxygen cutting lever briefly to insure
oxygen is flowing through the cutting hole.
4. Further adjustment may now be needed to insure
a neutral flame in the preheat holes. Generally a
reduction in oxygen.
5. The torch is ready for cutting.
Shutting Down
1. Using the acetylene control knob on the torch
handle turn off the flow of acetylene to the weld-
ing tip. This will allow oxygen to continue to
flow and will insure any debris that may be in
the preheat holes is blown out.
2. Press the oxygen cutting lever to insure debris is
cleared from the cutting hole.
3. Turn off the oxygen using the oxygen control
knob on cutting head.
3. If shutting down for only a short period of time,
close the tank valve on both the acetylene and
oxygen tank and leave the hoses filled with gas.
4. If shutting down for a longer period of time,
close the tank valve on both the acetylene and
oxygen tanks.
5. Bleed the acetylene line by opening the acety-
lene control knob on the torch handle. Watch the
regulator gauge, it should move to reading zero.
6. Close the acetylene control knob on the torch
handle.
7. Bleed the oxygen line by opening the oxygen
control knob on the cutting head. Watch the reg-
ulator gauge, it should move to reading zero.
8. Finally release the pressure on the regulator dia-
phragm by opening the regulator valve until little
or no pressure is felt. This will significantly im-
prove the life of the regulator.
Welding Nozzle Chart
Acetylene
Pressure
Range
Oxygen
Pressure
Range
Acetylene Cubic
Feet/Hour
Oxygen Cubic
Feet/Hour
Tip
Size
P.S.I.G. P.S.I.G.
Min.
Max.
Min. Max.
4
6-10
8-12
6
20
7
22
6
8-12
10-15
14
40
15
44
8
10-15
20-30
30
80
33
88
10
12-15
30-40
40
100
44
110
Cutting Tip Chart
Heating Nozzle Chart
Oxygen Pressure
P.S.I.G.
Acetylene Pressure
P.S.I.G.
Metal
Thickness
Tip
Size Min.
Max.
Min.
Max.
Up to 1/32" 000
3
5
3
5
1/16"-3/64" 00
3
5
3
5
1/32"-5/64" 0
3
5
3
5
3/64"-3/32" 1
3
5
3
5
1/16"-1/8"
2
3
5
3
5
1/8"-3/16"
3
4
7
3
6
3/16"-1/4"
4
5
10
4
7
1/4"-1/2"
5
6
12
5
8
1/2"-3/4"
6
1
14
6
9
3/4"-1 1/4" 7
8
16
8
10
Oxygen Pressure
P.S.I.G.
Acetylene Pressure
P.S.I.G.
Metal
Thickness
Tip
Size Min.
Max.
Min.
Max.
1/8"
000
20
25
3
5
1/4"
00
25
30
3
5
3/8"
0
25
30
3
5
1/2"
0
30
35
3
5
3/4"
1
30
35
3
5
1"
2
35
40
3
7
2"
3
40
45
4
8
3"
4
40
50
5
11
4"
5
45
55
6
13
5"
5
45
55
6
13
6"
6
45
55
8
14
8"
6
45
55
8
14
Note: Pressure settings are approximate for 25’
hose length, an increase of about 1 psi per additional
25’ is required.