Tweco GCM-6000 Gas Control - Manual (Page 25)

Manual 0-2641 19 OPERATION
SECTION 4:
OPERATION
4.01 Introduction
This Section provides a description of the Gas Control
Module.
4.02 Functional Overview
The Gas Control Module GCM 6000 provides all Plasma
and Secondary gas selection and control instrumentation
remote from the system power supply.
The Gas Control Module extends the necessary system
gas controls away from the power supply and is a re-
quired accessory with Merlin 6000GST Cutting Systems.
There are various Front Panel controls and indicators used
to set gas pressures and flows. The Rear Panel has con-
nections for the gas control cable and preflow, plasma,
and secondary gas to be used.
4.03 Operating Controls &
Indicators
A. Front Panel
PREFLO
W
PLASMA
PREFLO
W
PLASM
A
SECOND
AR Y
MODE
PLASMA
SECOND
AR Y
RU N PILO T SET
PLASMA SET
SEC SET
AIR
AIR
OT HE R
Gas Contr
ol Module
O 2
2 N
2
Ar/H
2 N
H 2 0
G
C M
6
0 0
0
4
5
11
10
6
8
1
9
2 7
A-01793 3
Figure 4-1 Front Panel Operating Controls
1. MODE Selection Switch
The switch selects one of four setup and operation
modes:
• RUN
• PILOT SET
• PLASMA SET
• SEC SET (Secondary)
2. PLASMA Gas Selection Switch
The switch selects one of four plasma gases for the
operation.
• AIR
• O
2
(Oxygen)
• N2 (Nitrogen)
• Ar/H2 (Argon/Hydrogen)
3. SECONDARY Gas Selection Switch
The switch selects one of four secondary gases for the
operation.
• AIR
• N2 (Nitrogen)
• OTHER
• H
2
O (Water)
4. PREFLOW Gas Flowmeter
Flowmeter used to adjust the flow of the preflow gas
to the system.
5. PLASMA Gas Flowmeter
Flowmeter used to adjust the flow of the plasma gas
to the system.
6. SECONDARY Gas Regulator
Adjusts secondary gas pressure. Pull knob out and
turn clockwise to increase secondary pressure to de-
sired level.
7. SECONDARY Gas Pressure Gauge
Indicates secondary gas pressure from 0 - 160 psi (0 -
11 bar).
8. PLASMA Gas Regulator
Adjusts plasma gas pressure. Pull knob out and turn
clockwise to increase secondary pressure to desired
level.