Tweco 6000 CE Merlin User Manual
Page 39
Manual 0-2601
4-3
OPERATION
NOTE
This switch must be in the gas (cylinder symbol)
mode for all secondary gases when the Gas Con-
trol Option is installed.
4. Coolant Pressure Gauge
Displays coolant pressure from 0 - 160 psi (0 - 11.0
bar). Normal operation is 100 - 120 psi (6.9 - 8.3 bar)
5. Plasma Pressure Gauge
Displays plasma gas pressure from 0 - 100 psi (0 - 6.9
bar).
6. Plasma Pressure Control
Adjusts plasma gas pressure. Pull knob out and turn
clockwise to increase plasma pressure to desired level.
D. Rear Panel
1. Fan Assembly
Fan used to move the air across the internal compo-
nents for cooling purposes.
2. SECONDARY Gas Input Fitting
1/4 NPT female gas fitting used to supply the sec-
ondary gas to the system.
3. PLASMA Gas Input Fitting
1/4 NPT female gas fitting used to supply the plasma
gas to the system.
4. SECONDARY WATER Fitting
1/4 NPT female fitting used for connection of tap wa-
ter to the Power Supply. The water can be used as a
secondary gas for the torch when the front panel SEC-
ONDARY switch is in the WATER position or the Gas
Control Option is installed.
5. Coolant Reservoir and Filler Cap
The coolant reservoir is located under the top panel
cover. The coolant reservoir supplies the system with
coolant to cool the torch parts during operation. The
maximum capacity of the reservoir is two gallons of
coolant.
Inside the reservoir, in the filler neck, is a basket and
a deionizer bag. The bag removes charged particles
from the coolant after it is returned to the reservoir.
If the coolant in the reservoir breaks down because
of these charged particles then a sensor on the reser-
voir will cause the COOLANT COND indicator to
go OFF.
6. Coolant Level Indicator
A slot provided in the rear panel allows the operator
a visual check of the coolant level. The coolant should
be above the indicator mark on the slot.
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Figure 4-5 Power Supply Rear Panel
7. Coolant Filter Assembly
The Coolant Filter Assembly on the rear panel is used
to filter the coolant as it returns to the reservoir. The
filter is a screen type which is easily cleaned or re-
placed.
8. Primary Input Power Cable Strain Relief
A strain relief supplied to secure the customer sup-
plied primary input power cable to the power sup-
ply. The input AC power cable is routed through the
strain relief and is connected to the EMC Filter PC
Board inside the unit.