General, Uncrating and Handling of Heater | Chromalox PN401 specification

GENERAL

The Chromalox FXTH Flexible Tank Heater is designed for heat- ing viscous liquids in large steel, concrete or fibrous glass tanks with normal manhole entry. Standard equipment with every heater includes flexible pipe and 14’ riser(s), two lifting cables, 4” high sludge legs and a 50-250° non-indicating thermostat with well, overtemperature probe and weatherproof terminal housing.

The Control Center OCC (NEMA XII, oil and dust-tight con- struction) or WCC (NEMA IV, weather-resistant construction) is designed for controlling the temperature of the viscous liquids by reg- ulating the FXTH's on-off cycle. It is mounted remotely with standard components consisting of a NEMA XII or NEMA IV enclosure with

vertical wall mounted brackets and hasp and staple for padlocking. Electrical components include: Failsafe overheat device, master cir- cuit-breaker, contactor(s), relay(s), selector switch, pilot lights, fuses and a 120-volt control circuit transformer.

IMPORTANT-Before attempting to uncrate or install the FXTH heater, read and understand all of the following instructions. Proper handling is absolutely necessary to obtain satisfactory operation. All electrical connections are to be made by a qualified electrician. To avoid excessive separation, stratification, sludge formation, etc., in your FXTH heated storage tank, consult a qualified oil supplier regarding selection and blending of fuel oils.

UNCRATING AND HANDLING OF HEATER

NOTE: Inspect shipping crates before opening. Contact the carrier if damage is evident.

1.Check to see that all components are included. FXTH immersion heaters are shipped as subassemblies consisting of (a) flexible heater with riser tubes, (b) terminal housing, (c) thermowells and vent tube, and (d) control unit (if ordered).

2.To unpack flexible heater, keep crate in upright and horizontal position when removing heater. Only top boards of crate need to be removed.

3.When lifting heater assembly, do not bend heater to radius less than 22". Heaters should be flexed in vertical plane only. This is a plane perpendicular to the sludge leg base plates. Bending in horizontal plane can damage internal ceramic insulators.

4.Use several people to lift heater - the number depends on the length and weight of the heater. As a guide, four men should be used to lift and handle a dual tube 20 ft. unit.

5.Do not put any stress on the flexible riser tubes. These are not designed for supporting weight. The unit must be lifted by either the 3" heater tubes or the steel lifting cables furnished with heater and located at both ends of heater. See Figure A.

6.Set heater in upright position on flat surface. Avoid any lateral

bending.

CAUTION: Never drop heater or subject it to mechanical shock.

PRE·INSTALLATION CHECK OF HEATER

	Rear Lifting Cable
Overtemperature	Heater
Probes	Back End

Front Lifting Cable

Heater Front End

Sludge Leg Base Plates

Riser Unions

Figure A

Flexible

Risers

Terminal Housing

1.Mechanical

The heater assembly has undergone a rigorous leak test just prior to shipment from the factory. Visually inspect all joints and flex tube surfaces to insure no mechanical damage has incurred during shipping. Contact carrier if heater shows signs of damage. Do not attempt to install heater if damage is evident. Do not attempt to tighten or remove any of the threaded fittings in the flexible tube assembly. If the sealing performed at the factory has been broken. the unit must undergo another complete leak test supervised by an Authorized Chromalox Serviceman before installing in tank.

2.Electrical

A.Open control unit cover and examine electrical components for any damage which may have been incurred during ship- ment. Contact carrier and report any damage noted.

B.CAUTION: Retighten all electrical connections and mounted components which may have loosened during shipment.

PN401 specifications

The Chromalox PN401 is a state-of-the-art industrial temperature controller designed to enhance the efficiency and reliability of heating applications. It embodies advanced technologies and features that cater to a wide array of industrial processes, making it a favorite among engineers and technicians.

One of the main features of the PN401 is its precise temperature control, which is vital for processes that require strict adherence to temperature specifications. The controller employs advanced PID (Proportional-Integral-Derivative) control algorithms, enabling it to maintain the desired temperature even in fluctuating environmental conditions. This ensures optimal performance of heating systems while minimizing energy consumption.

The PN401 is equipped with a user-friendly graphical interface, facilitating intuitive navigation through its extensive menu options. This interface allows users to easily configure parameters, monitor system status, and visualize temperature profiles. Additionally, it features real-time data logging capabilities, enabling users to track performance metrics over time. This data can be invaluable for troubleshooting and optimizing processes.

Durability is another key characteristic of the Chromalox PN401. Built with high-quality materials, this controller can withstand the rigors of industrial environments. It has a robust housing that protects it from dust, moisture, and mechanical impacts, ensuring reliability in even the most demanding settings.

With connectivity being increasingly vital in modern industry, the PN401 offers multiple communication protocols, including Modbus and Ethernet. This enables easy integration with existing control systems and facilitates remote monitoring, allowing operators to adjust settings and access data from anywhere.

The PN401 also supports various input types, including thermocouples and RTDs, making it versatile for different heating applications. Its ability to accommodate a range of sensors ensures compatibility with a variety of processes, enhancing its usability across different industrial sectors.

Safety features are paramount in the design of the PN401, which includes over-temperature protection and alarms to prevent overheating incidents. This not only protects equipment but also enhances workplace safety.

In summary, the Chromalox PN401 stands out as a robust and versatile temperature controller, equipped with advanced technologies that ensure precise control, user-friendly operation, and reliable performance in demanding industrial applications. Its durable design, extensive connectivity options, and safety features make it an ideal choice for any organization looking to optimize their heating processes.