Tweco 1000 Merlin(Sept1999) - Manual (Page 30)

OPERATION 26 Manual 0-2731
A-02171
1
3
2
7
6
5
4
Figure 4-3 Left Side Of Control/Access Panel
4. AC Power Indicator
Green light indicates AC power is being supplied to
the system when the ON/OFF switch is in ON posi-
tion. When switch is first set to ON, the indicator will
blink for approximately eight seconds indicating gas
purge at power on.
5. TEMP Indicator
Normally OFF. Yellow LED indicator will come ON
when the internal temperature sensors detect tempera-
tures above normal limits. The unit should be allowed
to cool before continuing operation.
6. GAS/Coolant Flow OK Indicator
The LED is both a gas pressure and coolant flow indi-
cator.
A green LED indicator ON means the input plasma
gas pressure is set to 30psi (2 bar or 207 kPa) or higher,
and there is adequate coolant flow of greater than 0.2
gpm
The indicator will be OFF when the plasma gas pres-
sure falls below 30 psi (2 bar or 207 kPa), there is not
enough coolant flow (less than 0.2 gpm, damaged
hose(s) or clogged filter(s), etc.
7. DC Indicator
Green light indicates voltage is present at the power
supply output and cutting current is available.
C. Gas Control Front Panel
S
E
C
O
N
D
A
R
Y
P
L
A
S
M
A
Lo-Flow
Gas
H 2 O
Mist
Plasma
Gas
Sec Pressure Lo-Flow Gas
H2O Mist
40
20
100
80
60
2 1
3 4 5 6
bar
psi
40
20
100
80
60
2 1
3 4 5 6
bar
psi
7 1
2
5
8
A-02172
4
3 6
Figure 4-4 Gas Control Front Panel
1. Plasma Gas Pressure Control
Adjusts plasma gas pressure. Pull knob out and turn
clockwise to increase plasma pressure to desired level.
2. Plasma Gas Pressure Gauge
Displays plasma gas pressure from 0 - 160 psi (0 - 11
bar). Maximium gas pressure to be used is 100 psi
(6.9 bar).
3. Plasma Gas Flowmeter
Controls flow rate of plasma gas supply.
4. Secondary Gas Pressure Control
Adjusts secondary gas pressure. Pull knob out and
turn clockwise to increase secondary pressure to de-
sired level.
5. Secondary Gas Pressure Gauge
Displays secondary pressure from 0 - 160 psi (0 - 11
bar). Maximium gas pressure to be used is 100 psi
(6.9 bar).
6. Secondary Lo-Flow Gas Flowmeter
Controls flow rate of secondary Lo-Flow gas supply.
7. Secondary Mode Selector
Selects secondary mode of Sec Pressure, Lo-Flow Gas
or H
2
O Mist (water).
8. Secondary Water Mist (H
2
O) Flowmeter
Controls flow rate of secondary water supply.
D. Torch Bulkhead
The torch bulkhead is located under the Control/Gauge
Panel.