Tweco 1000 Merlin(Sept1999) User Manual Page 30
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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
H
2
O
Mist
40
20
100
80
60
2
1
34
5
6
bar
psi
40
20
100
80
60
2
1
34
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.
- Automated Plasma Cutting 1
- Power Supply (CE) 1
- TABLE OF CONTENTS 3
- TABLE OF CONTENTS (continued) 4
- SECTION 1: 5
- GENERAL INFORMATION 5
- 1.03 Publications 6
- 1.04 Note, Attention et 7
- Avertissement 7
- 1.05 Precautions De Securite 7
- Importantes 7
- 1.06 Documents De Reference 9
- 1.08 Statement of Warranty 12
- A. Typical System 13
- Features 14
- Accessories 15
- 2.05 Theory Of Operation 15
- A. Power Source 17
- A. Using Shop Air 18
- High-Pressure Gas Cylinder 20
- System Without Optional 21
- Remote Arc Starter 21
- 3.07 Work Cable And Ground 22
- Connections 22
- Figure 3-9 Coolant Reservoir 23
- 3.10 Lifting Options 24
- A. Mounting Arc Starter Box 25
- B. Connecting Torch 25
- Power Supply 26
- SECTION 4: 29
- OPERATION 29
- C. Gas Control Front Panel 30
- D. Torch Bulkhead 30
- E. Rear Panel 31
- 4.04 Sequence of Operation 32
- L. Ready for Operation 34
- A. Operational Suggestions 36
- B. Fold Back Feature 36
- B. Gas Pre-Flow Delay (SW3) 37
- Logic PC Board 37
- OPERATION 34 Manual 0-2731 38
- SECTION 5: 39
- MAINTENANCE & 39
- CUSTOMER/OPERATOR 39
- C. In-Line Filter Assembly 40
- A. Piloting 41
- B. Torch Standoff 41
- C. Edge Starting 41
- D. Direction of Cut 42
- E. Dross 42
- Basic Troubleshooting 42
- How to Use This Guide 42
- 5.08 Power Supply Parts 47
- Replacement 47
- Coolant Filter Assembly 48
- Coolant Hoses 48
- A. Parts List Breakdown 49
- B. Returns 49
- 6.05 Basic Replacement Parts 50
- 6.06 Options and Accessories 50
- PILOT ARC 52
- GROUNDING DIAGRAM 53
- INTERCONNECTION DIAGRAM 54
- CABLES AND HOSES 55
- 2A, 125 VAC 56
- INTERCONNECTING DIAGRAM 57
- Input Voltage 58
- Manual 0-2731 55 APPENDIX 59
- APPENDIX 56 Manual 0-2731 60
- Manual 0-2731 57 APPENDIX 61
- APPENDIX 58 Manual 0-2731 62
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