Installation, Wiring, Testing, Maintenance

INSTALLATION

WARNING: Hazard of Electric Shock. Disconnect all power before installing heater.

1.Position slots in clamping band over terminal posts on heating elements. Note: Terminal hardware must be removed to allow clamping band slots to fit over terminal posts (Figure 1).

2.When heater band is correctly placed in the desired location, compress ends of band together and insert bolt through non- threaded trunnion socket and then into opposite threaded sock- et. Hand tighten (Figure 2).

3.Turn Allen head bolt with 7/32” Allen wrench to draw heater band tight on cylinder. Ensure that there is good contact

between heating element and cylinder and that there is electri- cal clearance between the heater terminals and the clamping band (Figure 1).

4.DANGER: Hazard of Fire. Since these heaters are capa- ble of developing high temperatures, extreme care should be taken to:

A.Avoid installing heaters in an atmosphere containing com- bustible gases and vapor.

B.Avoid contact between heater and combustible material.

C.Keep combustible materials far enough away to be free of effects of high temperature.







Figure 1	Figure 2	Figure 3

WIRING

WARNING: Hazard of Electric Shock. Any installation involving electric heaters must be effectively ground- ed in accordance with the National Electical Code to eliminate shock hazard.

1.Rough-in Wiring — Wiring to heater should be to the volt- age specified on heater band and in accordance with local and National Electrical codes by a qualified person. As a guide in determining line wire sizes see Amperes in Specifications Table A on page 1. WARNING: Use copper conduc- tors only.

2.Assemble terminal hardware and wiring in the order shown in Figure 5.

3.Protection with proper size fuses and breakers is important to minimize hazards.

WARNING: Do not exceed 25 inch pounds of torque when tightening the hex nuts on the heater termi- nals. Excessive torque will result in stripping the terminals from the refractory of the heating ele- ment.

4.For rated output for heater band, connect heating elements in parallel. 240V elements to be run on 480V should be connect- ed in series. When element wattages are not equal, heaters must not be connected in series.

TESTING

DANGER: Hazard of Electric Shock or Burns. Avoid contact of hot surfaces and live electrical terminals during this adjustment.

1.Energize the heater and check for hot spots after the heater has reached operating temperature. These can be identified as bright red areas on the heating element or dark brown areas on the clamping band. If hot spots are encountered, place a wood- en block on the affected area and tap lightly with a hammer to bring the heater in contact with the pipe or barrel surface.

2.It’s good practice to check the tightness of the clamping band after a few hours at operation temperature. Chromalox HTRC (Heat Trans-fer and Release Coating) is also available for high temperature applications.

Figure 4

MAINTENANCE

WARNING: Hazard of Severe Shock. Disconnect all power to heater before servicing or replacing heaters.

1.For longer heater life, maintain good contact between heater and work cylinder by periodically checking clamping band tightness.

2.Make certain that both terminals and band are free from con- tact with oil, liquids or other foreign matter. Such contaminants can cause heater failures.

3.Check for loose terminal connections and tighten if necessary.

PM400-2 specifications

The Chromalox PM400-2 is a state-of-the-art temperature control unit designed to meet the demands of various industrial applications. This unit is known for its efficiency, reliability, and advanced features that enhance temperature management processes. With a focus on precision and user-friendliness, the PM400-2 is ideal for both heating and cooling applications, making it versatile in its functionality.

One of the standout features of the PM400-2 is its digital control system. This system allows for accurate temperature regulation, providing real-time monitoring and adjustments. The user interface is designed to be intuitive, making it easy for operators to set and modify temperature parameters as needed. The digital display provides clear readouts, ensuring users can quickly assess system status at a glance.

The PM400-2 is equipped with advanced safety features that safeguard both the unit and the processes it controls. It includes built-in over-temperature protection, which helps prevent system failures due to overheating. Additionally, the unit features multiple alarms that notify operators of any irregularities in operation, ensuring a swift response to potential issues.

Another key characteristic of the Chromalox PM400-2 is its energy efficiency. The unit is designed to minimize energy consumption while providing optimal performance, contributing to reduced operational costs. This not only benefits the environment but also aligns with the growing demand for sustainable industrial practices.

The PM400-2 utilizes cutting-edge technologies, such as PID control algorithms, which help maintain thermal stability and minimize fluctuations in temperature. This level of control is crucial in processes that require tight temperature tolerances, ensuring product quality and consistency.

The construction of the PM400-2 is robust, built to withstand the rigors of industrial environments. The unit's housing is made from high-quality materials that provide durability and protection against harsh environmental conditions. This ensures a longer lifespan and reduced maintenance needs, adding to the overall value of the unit.

In summary, the Chromalox PM400-2 stands out in the marketplace due to its digital control capability, safety features, energy efficiency, and robust design. It caters to a wide range of applications, offering reliability and precision that industrial operators can trust. The integration of advanced technologies ensures that the PM400-2 not only meets but exceeds the expectations of modern temperature control systems. As industries continue to prioritize efficiency and sustainability, the PM400-2 is positioned as a leading solution in temperature management.