Tweco Drag-Gun - Manual (Page 17)

Operating Manual 0-2682 13 DRAG-GUN Plasma Cutter
5. 208/230VAC Service (60Hz)
This unit operates on single phase 208 or 230VAC (±
10%) 60Hz. Units are factory set for 230V use. Ser-
vice must be fused for at least 15 amps. For informa-
tion on voltage changeover, call your local distribu-
tor.
6. Extension Cords
Extension cords must meet National Electric Code
Guidelines (and OSHA Guidelines, where applicable).
Extension cords must have the same rating as the ser-
vice and must have a three-pronged plug. Refer to
the following table for recommended cord sizes:
110 VAC & 120 VAC Service
Ext. Cord Length Recommended Size (Min.)
Up to 50 ft. (15.2 m) 12 AWG (4 mm 2 )
Up to100 ft. (30.5 m) 10 AWG (6 mm 2 )
220 VAC Service
Ext. Cord Length Recommended Size (Min.)
Up to 50 ft. (15.2 m) 14 AWG (2.5 mm 2 )
Up to100 ft. (30.5 m) 12 AWG (4 mm 2 )
Figure 4-1 Extension Cord Sizes for Input Voltage
E. Input Power Cable Connections E. Input Power Cable Connections E. Input Power Cable Connections E. Input Power Cable Connections E. Input Power Cable Connections
NOTE
The primary input cable is factory installed for one of the
following configurations:
• 100VAC 50Hz/110VAC 60 Hz, single phase, with
plug
• 120VAC 50Hz, single phase, no plug
• 120VAC 60Hz, single phase, with plug
• 220VAC 50Hz, single phase, no plug
• 208/230VAC 60Hz, with plug
For those units where a plug is not installed on the end of
the input power cable, connect the ends of the individual
wires to a customer supplied plug or main disconnect
per the following:
• Black (or brown) wire to Line (AC or Live)
• White (or blue) wire to Neutral (ACC)
• Green (or green-yellow) wire to Ground
F. Input Voltage Selection (For 208/230 F. Input Voltage Selection (For 208/230 F. Input Voltage Selection (For 208/230 F. Input Voltage Selection (For 208/230 F. Input Voltage Selection (For 208/230
VAC Service Only) VAC Service Only) VAC Service Only) VAC Service Only) VAC Service Only)
All 208/230 VAC units are factory set for 230 VAC. To
switch to 208VAC input power operation, contact your
local distributor.
G. Torch Consumable Parts Selection G. Torch Consumable Parts Selection G. Torch Consumable Parts Selection G. Torch Consumable Parts Selection G. Torch Consumable Parts Selection
The torch consumable parts are factory installed, as shown
in Figure 4-2.
Torch Head Assembly
Electrode Tip
Standard
Shield Cup
Gas
Distributor
PCH-10
A-02007
Figure 4-2 Exploded View of Torch Parts
To change the consumable parts, use the following pro-
cedure:
WARNING
Disconnect primary power at the source before dis-
assembling the power supply or torch.
1. Place the unit Power ON/OFF Switch to the OFF posi-
tion.
CAUTION
Consumable parts may be HOT! Torch parts may
get quite hot during normal operation. Always
wear light cutting gloves when changing torch
parts just after operating the Drag-Gun system.
2. Position the torch with the shield cup facing upward
and unscrew and remove the shield cup from the torch
head assembly (The shield cup holds the tip, gas dis-
tributor, and electrode in place).
3. Remove the tip, gas distributor, and electrode.
4. Install the electrode, gas distributor, and tip. Replace
worn parts, as necessary.
5. Install and hand tighten the shield cup until it is seated
on the torch head. If resistance is felt when installing
the cup, check the threads and parts configuration
before proceeding.
CAUTION
Improper assembly or use of nonstandard torch
parts can cause the torch head to short and may
overheat or damage the torch. Check the torch for
proper assembly and appropriate front end torch
parts.