Thermal Comfort 3000 manual Options And Accessories

E. RF Shielding

All machine torch systems are shielded to minimize ra- dio frequency (RF) interference which results from the high frequency arc initiation. These shielded systems are designed with features such as a wire for establishing an earth ground and shielded torch and control leads.

F. Interlocks

The system has several built-in interlocks to provide safe and efficient operation. When an interlock shuts down the system, the torch switch (or control device) must be used to restart the system.

1. Parts-In-Place (PIP) Interlock

The Power Supply has a built-in parts-in-place inter- lock that prevents accidental torch starting when torch parts are not properly installed. A flow switch on the coolant return lead detects reduced coolant flow caused by improper torch assembly. If not satisfied, the switch interrupts power to the tip and electrode.

2. Gas Pressure Interlock

Pressure switches act as an interlock for the gas sup- plies. If supply pressure falls below minimum require- ments the pressure switches will open, shutting off the power to the contactors, and the GAS indicator will go out. When adequate supply pressure is avail- able the pressure switches close, allowing power to be resumed for cutting.

3. Thermal Interlock

Thermal overload sensors are located in the Main Transformer, Main Heatsink Assembly, and Pilot Re- sistor in the power supply. If one of these compo- nents is overheated the appropriate switch will open up, causing the temperature light to turn from green to red and shutting off power to the main contactor. When the overheated component cools down the switch will close again and allow operation of the sys- tem.

G. Plasma Torches

Plasma torches are similar in design to the common au- tomotive spark plug. They consist of negative and posi- tive sections which are separated by a center insulator. Inside the torch, the pilot arc is initiated in the gap be- tween the negatively charged electrode and the positively charged tip. Once the pilot arc has ionized the plasma gas, the superheated column of gas flows through the small orifice in the torch tip, which is focused on the metal to be cut.

The Maximizer 300 Torch uses an internal closed-loop cooling system. Deionized coolant is distributed from a reservoir in the Power Supply through the coolant sup-

ply lead. At the torch, the coolant is circulated around the torch tip and electrode, where the extra cooling helps to prolong parts life. Coolant then circles back to the power supply through the return lead. The Maximizer 300 also can use secondary gases such as compressed air, nitrogen (N2), water, and carbon dioxide (CO2).

3.05 Options And Accessories

These items can be used to customize a standard system for a particular application or to further enhance perfor- mance. Torch accessories are listed in the separate Torch Instruction Manual.

NOTE

Refer to Section 6, Parts Lists, for ordering infor- mation.

A. RC6010 Remote Control

For mechanized systems, this low profile unit provides full CNC capability and allows the operator to con- trol most system functions from a remote location.

B. Computer Control Cable Kits

For interfacing the power supply with a computer or auxiliary control device. Available in various cable lengths.

C. SC-10 or SC11 Standoff Control

NOTE

Standoff Control SC10 requires installation of Re- mote Control RC6010.

For machine torch systems, the SC-10 automatically finds height and maintains torch standoff with a high speed torch lifter motor.

D. High Pressure Regulators

Available for air, oxygen, argon/hydrogen, nitrogen, CO2 and water.

E. High Flow Water Shield (HFWS) Assembly

Reduces arc glare, noise, and fumes during the cut- ting process.

F. Two Stage Air Line Filter

Removes damaging contaminants as small as 5 mi- crons from the plasma stream when using compressed air.

Manual 0-2533 13 INTRODUCTION & DESCRIPTION