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Read entire Installation Section before installing the TOMAHAWK™ 625.
SAFETY PRECAUTIONS
WARNING
ELECTRIC SHOCK CAN KILL.
•Only qualified personnel should install this machine.
•Turn the input power OFF at the disconnect switch or fuse box and discharge input capacitors before working inside the equip- ment.
•Do not touch electrically hot parts.
•Turn the TOMAHAWK™ 625 Power Switch OFF when connecting power cord to input power.
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SELECT PROPER LOCATION
Place the TOMAHAWK™ 625 where clean cool air can freely circulate in and out of the side louvers. Dirt, dust or any foreign material that can be drawn into the machine should be kept at a minimum. Failure to observe these precautions can result in excessive operating temperatures and nuisance shutdown of the machine.
A source of clean, dry air or nitrogen must be supplied to the TOMAHAWK™ 625 when using external air supply. Oil in the air is a severe problem and must be avoided. The supply pressure must be between 80 and 150 psi. The flow rate is approximately 4.0 cfm (113 l/min.). Failure to observe these precautions could result in excessive operating temperatures or damage to the torch.
STACKING
The TOMAHAWK™ 625 cannot be stacked.
TILTING
The TOMAHAWK™ 625 must be placed on a stable, level surface so it will not topple over.
HIGH FREQUENCY INTERFERENCE PROTECTION
The TOMAHAWK™ 625 employs a touch start mech- anism for arc initiation which eliminates high frequen- cy emissions from the machine as compared with spark gap and solid state type high frequency genera- tors. Keep in mind, though, that these machines may be used in an environment where other high frequen- cy generating machines are operating. By taking the following steps, high frequency interference into the TOMAHAWK™ 625 can be minimized
(1)Make sure the power supply chassis is connected to a good earth ground. The work terminal ground does NOT ground the machine frame.
(2)Keep the work clamp isolated from other work clamps that have high frequency.
(3)If the work clamp cannot be isolated, then keep the clamp as far as possible from other work clamp connections.
(4)When the machine is enclosed in a metal building, several good earth driven electrical grounds around the periphery of the building are recom- mended.
Failure to observe these recommended installation procedures may cause improper function of the TOM- AHAWK™ 625 or possibly even damage to the control system or power supply components.
INPUT ELECTRICAL CONNECTIONS
The TOMAHAWK™ 625 is rated for 208VAC and 230VAC input voltage. Before installing the machine, check that input supply voltage, phase, and frequency are the same as the machine's voltage, phase, and frequency as specified on the machine's rating plate.
•The TOMAHAWK™ 625 should be connected only by a qualified electrician. Installation should be made in accordance with local codes.
For use on engine drives, keep in mind the above input draw restrictions and the following precaution.
The TOMAHAWK™ 625 can be operated on engine driven generators as long as the 230 volt auxiliary meets the following conditions:
•The AC waveform peak voltage is below 400 volts.
•The AC waveform frequency is between 45 and 65 Hz.
•The RMS voltage of the AC waveform is always greater than 208VAC.
TOMAHAWK™ 625
