INSTALLATION

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

maintain liquid level above heated portion (dimension B of Figure 1) of heater.

WIRING

WARNING: Hazard of Electric Shock. Any installation

Figure 3

3 Pole Contactor

involving electric heaters must be effectively grounded

Customer Supplied

 

 

in accordance with the National Electrical Code to elim-

1

Line Voltage

inate shock hazard.

2

 

1. Electrical wiring to heater must be installed in accordance

3

 

 

120V or 240V

with the National Electrical Code and local electric codes by a

3

qualified person. WARNING: Use copper conductors only.

2

Control Circuit

1

 

2.Wire heater with manual reset thermal cutout as shown in

Figures 2 thru 4.

Note:

 

 

 

 

C2

 

 

 

Cutout

1.

Manual reset thermal cutout rating 25 amps 120-277 Vac.

 

C1

 

 

 

 

Ground

 

 

 

 

 

 

 

 

 

 

2.

Customer supplied thermostat/liquid level control wiring not

 

Green

 

 

 

 

 

Factory

 

shown.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Field

 

 

 

Three Phase for:

Figure 2

2 Pole Contactor

PTHF-302, -304, -402, -404

 

Customer Supplied

 

 

 

Line Voltage

Figure 4

3 Pole Contactor

1

Customer Supplied

2

 

 

Line Voltage

3

 

 

 

 

 

3

 

 

 

2

 

1

 

 

 

 

1

 

2

 

 

3

120V or 240V

 

120V or 240V

C2

 

Control Circuit

Cutout

Control Circuit

 

 

 

1

 

C1

 

 

 

 

2

 

Green

Ground

3

C2

 

 

Factory

 

Cutout

 

C1

Ground

 

Field

 

 

Single Phase for:

 

Factory

Green

Field

PTHF-302, -304, -402, -404

 

Three Phase for:

 

 

 

 

 

PTHF-602, -604, -802, -804, -1002, -1004

 

OPERATION

 

1.Do not operate heater at voltages in excess of that stamped on the heater since excess voltage will shorten heater life.

2.Always maintain a minimum of 2” of solution above the heater portion of the element to prevent exposure of the effective heated length. If the heater is not properly submerged, it may overheat and shorten heater life. Do not operate heater if dry. (Note: Heated portion of element is Dimension B of Figure 1).

3.Sludge should not be allowed to build-up to the point where it contacts heater as this can lead to premature heater failure.

4.Maximum recommended process temperature is 212˚F.

5.If manual reset cutout trips, disconnect power to heater and check for cause of overheat condition. Correct condition, then remove heater terminal cover and push black reset button to reset the cutout. Assemble terminal cover before re-energizing heater.

MAINTENANCE

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

1.Heaters should be checked periodically for corrosion buildup and cleaned if necessary.

2.Tank should be checked regularly for sediment around the end of heater as this sediment can act as an insulation and shorten heater life.

3.WARNING: Do not scratch or scrape thermal cutout capil- lary when cleaning. Cleaning should be done chemically.

Limited Warranty:

Please refer to the Chromalox limited warranty applicable to this product at http://www.chromalox.com/customer-service/policies/termsofsale.aspx.

TA - Q0 - EF

2150 N. RULON WHITE BLVD., OGDEN, UT 84404

Litho in U.S.A.

Phone: 1-800-368-2493

www.chromalox.com

 

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Chromalox PD438-2 specifications Wiring, Operation, Maintenance

PD438-2 specifications

The Chromalox PD438-2 is a state-of-the-art temperature control and monitoring device that has gained prominence in various industrial applications due to its advanced features and robust performance. This particular model is designed to provide precise temperature management across a wide range of processes, making it an essential tool in manufacturing, food processing, and other sectors requiring stringent temperature regulation.

One of the main features of the PD438-2 is its user-friendly digital interface, which allows operators to set and monitor temperature ranges easily. This model supports multiple temperature sensors and can display readings in both Celsius and Fahrenheit, providing flexibility for global applications. The large LCD screen ensures clear visibility of the current temperature, set points, and operational status, enhancing visibility and reducing the chances of error during operation.

The PD438-2 utilizes advanced microprocessor-based technology, which enhances its accuracy and reliability. This feature ensures that the temperature control is not only precise but also responsive, adapting quickly to changes in the process environment. Additionally, the controller is equipped with auto-tuning capabilities that optimize the control parameters for the specific application, which significantly improves the efficiency of temperature regulation.

Another characteristic that sets the Chromalox PD438-2 apart is its versatility in terms of output options. It can be configured for various types of heating elements, including electric heaters and other thermal devices. This flexibility enables it to be integrated into different systems seamlessly, making it an ideal choice for a wide array of industries.

Safety is a critical consideration in any temperature control application, and the PD438-2 does not compromise in this area. The device features comprehensive alarm systems that alert operators to any anomalies or deviations from preset temperature thresholds. This proactive approach to safety ensures that any potential issues can be addressed promptly, thereby minimizing downtime and protecting equipment.

Moreover, the PD438-2 is designed for ruggedness and durability, featuring a robust housing that can withstand harsh industrial environments. Its compatibility with various mounting options allows for easy installation and integration into existing systems.

In summary, the Chromalox PD438-2 stands out due to its precise temperature control, user-friendly interface, advanced microprocessor technology, versatility in outputs, safety features, and durable design. These attributes make it a reliable choice for industries demanding high-performance temperature management solutions.