Tweco 1000 Merlin(Sept1999) - Manual (Page 21)

Manual 0-2731 17 INSTALLATION PROCEDURES
PLASMA GAS
Fitting
SECONDARY
GAS Fitting
Plasma Gas
Hose
Unused Secondary
Air Hose
(End must be plugged)
A-02350
Plasma Air Supply Hose
(Customer Supplied)
Two-Stage
Air Filter
Barb Fitting
Secondary Gas
Hose From Gas
Cylinder
Figure 3-5 Gas Connections Using Shop Air and
High-Pressure Gas Cylinder
c. Connect the air supply hose (see note) to the
Air Line Filter input port (IN) barb fitting and
secure with a customer supplied hose clamp.
NOTE
The supply hose must be 1/4 inch (6.3 mm) mini-
mum inside diameter to provide adequate air flow.
D. Using Water Secondary
NOTES
Tap water should only be used as a secondary on
machine torches.
The tap water source does not need to be deionized,
but in water systems with extremely high mineral
content a water softener is recommended.
Tap water with high levels of particulate matter
must be filtered.
Tap water can be used instead of a secondary gas and is
connected to the Power Supply as follows:
1. The tap water source must be capable of delivering a
minimum water pressure of 50 - 100 psi (3.5 - 6.9 bar)
and flow of 9 gph (34 lph).
2. Connect the tap water supply hose to the input of a
Water Pressure Regulator.
3. Connect the output of the water regulator to the fitting
marked SECONDARY H2O (water) on the rear panel
of the Power Supply.
A-02351
Water Supply Hose
(Customer Supplied)
WATER
Secondary
Figure 3-6 Secondary Water Connection
3.06 Connecting Torch Leads To
System Without Optional
Remote Arc Starter
NOTE
For Systems using the Optional Remote Arc Starter
refer to Section 3.13 for connecting the Torch.
WARNING
Disconnect primary power at the source before as-
sembling or disassembling the power supply, torch
parts, or torch and leads assembly.
The Torch Leads must be properly installed to the Power
Supply for proper operation. Make all torch connections
to the Torch Bulkhead Panel per the following: