How it Works
Watlow
Loading...
MULTICELL

Watlow MULTICELL Installation & Maintenance Manual

WATLOW ELECTRIC MANUFACTURING COMPANY
Installation & Maintenance Manual for MULTICELLTM Heaters I&M MANUAL No: 316-42-21-1 Page: 1 Date: 3/15/2017 Rev: 5.00
General Statement
The purpose of this product manual (the “Manual”) is for Watlow Electric Manufacturing Company (“Watlow”) to convey certain recommendations, advisories, and requirements regarding your
purchase and use of the product(s) described below (the “Product”). This Manual is not intended to be an exhaustive list of recommendations, advisories, or requirements for the use of the Products. Please visit Watlow’s website (http://www.watlow.com/) or contact Watlow customer service (1-800-WATLOW2) for more information regarding Watlow’s products. To ensure the proper use of the Product, each User of the Products should carefully review this Manual. FAILURE TO COMPLY WITH THE INFORMATION PROVIDED HEREIN SHALL CAUSE THE USER TO ASSUME ALL RISK AND LIABILITY ARISING OUT OF SUCH FAILURE.
Table of Contents
General Statement ................................................................................................. 1
Product Description ................................................................................................ 2
Safety Statements .................................................................................................. 2
Safety (Generally) ................................................................................................... 3
Pre Installation ........................................................................................................ 6
Installation .............................................................................................................. 6
Insulation Resistance (Megohmmeter) Pre-check .................................................. 7
Protection of heater elements from over temperature ............................................ 7
Electrical Enclosures and Electrical Connection Protection ................................. 10
Orientation and Mounting ..................................................................................... 11
Wiring ................................................................................................................... 12
Start Up ................................................................................................................ 15
Troubleshooting .................................................................................................... 16
Preventative Maintenance .................................................................................... 17
Replacement Parts ............................................................................................... 18
Disposal and Recycling ........................................................................................ 18
Terms and Conditions and Product Returns ........................................................ 19
Declaration of Conformity (page 1) ....................................................................... 20
Declaration of Conformity (page 2) ....................................................................... 21
Original Instructions (English)
WATLOW ELECTRIC MANUFACTURING COMPANY
CAUTION
This is a Caution statement that is related to the use of this heater. These statements cautions against actions which may damage the heater or associated equipment.
WARNING - Risk of Electric Shock
This is a Warning statement that warns of the presence of electrical voltages which can cause physical injury or death.
WARNING
This is a Warning statement that is related to the use of this heater. These statements warn of actions that may result in physical injury or death.
DANGER
This is a Danger statement that is related to the use of this heater. Failure to heed
these messages will result in serious personal injury or death.
Installation & Maintenance Manual for MULTICELLTM Heaters I&M MANUAL No: 316-42-21-1 Page: 2 Date: 3/15/2017 Rev: 5.00
Product Description
This document is intended to convey Watlow’s recommendations for MULTICELL heaters. MULTICELL heaters are designed for a wide range of heating applications where high temperature capability, independent zone control, and loose fit design is needed. Reference the product part numbers and relevant design records for details.
NOTE: This style of heater is primarily designed to be powered by the Mains and hence will be operated at a frequency of 50 or 60 hertz. They may optionally be powered by DC.
NOTE: The Operating Current is important for the User to calculate, in order to properly size the feed wire and other components for the safe operation of the heater. Rated Voltage and wattage are provided for this purpose.
NOTE: The rated temperature range is not stated, since this heater is a component in the User’s overall system. Be sure to read and understand the warnings given in the Electrical Enclosure and Wiring section of this manual.
Safety Statements
The following markers utilized throughout this Manual shall have the meanings set forth below.
Original Instructions (English)
WATLOW ELECTRIC MANUFACTURING COMPANY
WARNING
The User must ensure that the installer uses all relevant PPE (Personal Protection Equipment).
WARNING – Risk of Electric Shock
Any installation and maintenance performed on this heater shall only be done by a qualified electrician, in accordance with applicable national and local electrical codes.
WARNING
Electric heaters are inherently dangerous!! Care should be taken to read and completely understand this document before installing and wiring the heater.
Due to the design intent of this component, it will inherently become hot during operation. Therefore, the User must conduct their own Risk assessment to identify if there is any residual risk pertaining to direct contact with hot surfaces.
Due to the weight of some heaters, additional lifting equipment may be required. Use caution whenever handling the heater.
WARNING
This appliance/component is not intended for use by persons (including children) with reduced sensory or mental capabilities, or lack of experience and knowledge, unless they have been given supervision or instruction concerning use of the appliance by a person responsible for their safety. Children should be supervised to ensure that they do not play with the appliance.
Installation & Maintenance Manual for MULTICELLTM Heaters I&M MANUAL No: 316-42-21-1 Page: 3 Date: 3/15/2017 Rev: 5.00
Safety (Generally)
The following sets forth general safety requirements and recommendations relating to the use of the Product(s).
Original Instructions (English)
WATLOW ELECTRIC MANUFACTURING COMPANY
CAUTION
This product does not fall under the scope of the EMC Directive. However, if the equipment into which this heater is installed falls under the scope of the EMC Directive, it is recommended that the User ensure that their equipment fully complies with all European New Approach Directives as applicable, which may include the EMC Directive.
WARNING – Risk of Electric Shock
There is potential risk of rupture of the component if the component is not installed as
per the manufacturer’s installation instructions. Use of over current device(s) is
required in accordance with applicable national and local electrical codes.
WARNING – Risk of Electric Shock
If an enclosure is provided, the terminal enclosure cover is bonded to enclosure body to ensure an effective ground fault current path. If this bonding conductor is disconnected for any reason it must be reconnected for safety.
The typical connection utilizes two external tooth lockwashers to sandwich the conductor ring terminal against the connection base and the tightening nut/screw. All hardware must be replaced. Retighten connections to 2.3 N·m (20 in-lb).
WARNING - Risk of Electric Shock
Never interrupt the protective earth circuit / ground.
Any interruption or disconnection of the protective earth circuit used by this heater will create a dangerous situation and could result in an electric shock that in some situations could lead to serious injuries!
If an enclosure is provided, the symbol set forth below indicates where the protective earth ground should be connected in the electrical enclosure of the heater.
Installation & Maintenance Manual for MULTICELLTM Heaters I&M MANUAL No: 316-42-21-1 Page: 4 Date: 3/15/2017 Rev: 5.00
Original Instructions (English)
WATLOW ELECTRIC MANUFACTURING COMPANY
CAUTION
Ensure that the element end seal temperature is kept below its temperature rating.
WARNING
The User must prevent live conductors from coming into contact with any fluids or personnel.
All original enclosures and covers (where applicable), sensors and/or user controls, etc must be correctly utilized in order for the safe operation of this product.
Warning: this product has not been designed for use in Classified (hazardous) locations.
WARNING
It is the User’s responsibility to ensure that the heater being used is properly selected and installed in the application. This heater should only be used in the application that it was originally designed for, and failure to do so could result in damage to equipment or injury to personnel! For example, an immersion heater is not likely suitable to be used for heating a gas because the watt density would be too high.
These Heater components must be connected as per the Manufacturers installation instructions and therefore must only be utilized in applications suitable for the use of these components.
Typical applications include –
• Hot isothermal forming
• Soil remediation
• Hot forging dies
• Heated platens
• Super plastic forming
• Heated platens (single and multiple zones)
• Heat treating processes
• Super plastic forming with diffusion bonding
Installation & Maintenance Manual for MULTICELLTM Heaters I&M MANUAL No: 316-42-21-1 Page: 5 Date: 3/15/2017 Rev: 5.00
Original Instructions (English)
WATLOW ELECTRIC MANUFACTURING COMPANY
WARNING
The User must ensure that the installer uses all relevant PPE (Personal Protection Equipment).
CAUTION
Elements may come in contact with each other during shipment. Minor adjustments to heaters may be required prior to installation. Extensive bending of heaters should be avoided since dielectric strength between coil and sheath may be compromised.
It may be necessary due to atmospheric conditions / humidity, to perform a dielectric test prior to startup. Refer to Insulation Resistance (Megohmmeter) Pre-check under Installation section.
Installation & Maintenance Manual for MULTICELLTM Heaters I&M MANUAL No: 316-42-21-1 Page: 6 Date: 3/15/2017 Rev: 5.00
Pre Installation
The following sets forth general safety instructions and requirements relating to the preparation for installation of the product of the Product(s).
Before installing the Product(s), inspect for any damage occurring during shipment, storage or handling. If you have any concerns about the condition of the Product(s), do not install such Product(s) and contact your Watlow representative prior to taking further action with the Product(s).
Before installing the Product(s), confirm that the heater in hand is the same as that which was ordered and which is intended for use. In the event of a discrepancy, please contact your Watlow representative prior to taking further action with the Product(s).
Installation
Proper heater selection and installation will help to ensure heat transfer efficiency, safety, and increased Product life. The following sets forth instructions and requirements relating to the installation of the Product(s).
Original Instructions (English)
WATLOW ELECTRIC MANUFACTURING COMPANY
WARNING – Risk of Electric Shock
The bake-out procedures listed below should only be performed by properly qualified personnel. If the procedure calls for connecting electric power to the heater, this shall only be performed by a qualified electrician, in accordance with applicable national and local electrical codes.
Installation & Maintenance Manual for MULTICELLTM Heaters I&M MANUAL No: 316-42-21-1 Page: 7 Date: 3/15/2017 Rev: 5.00
Insulation Resistance (Megohmmeter) Pre-check
Any products that have been shipped sealed in plastic should not have the plastic removed until the product is ready for installation and use.
During shipping and/or storage, the possibility of moisture absorption by the insulation material within the heater is possible. To determine if the proper insulation resistance value is present, use a 500 VDC (minimum) Megohmmeter to measure the dielectric insulation resistance (IR) between the heater terminal and the heater sheath. This value should be greater than 50 Megohm when the unit is at room temperature.
If a low IR value exists, the following options may be used to dry the elements and return the IR value to an acceptable range. In order to maintain termination integrity, the termination should be kept below 222°C (400°F), or the maximum temperature rating of the lead wire insulation and end seal. When needed, bake the heaters in an oven at 177°C (350°F) ± 27°C (50°F) for a period of 12 hours. After baking, repeat the IR test to verify the evaporation of sufficient moisture from within the heater. If the heaters fail a second IR test, contact the factory at the phone number shown on this manual. Regardless of the insulation resistance value, the heat up and cool down rates in the Start Up section of this manual should be followed.
Protection of heater elements from over temperature
The use of automatic temperature controls to regulate the heating process and prevent heater over temperature is highly recommended to ensure safe heater operation. All temperature limit devices must have appropriate third party approval and be applied in the classification for which it was tested and approved. The high temperature limiting device(s) should function independently from the process temperature control.
High Temperature Limit controllers with temperature feedback and relays that are independent from the heater control system can be used to provide an automatic means of interrupting the electrical power circuit when/if excessive temperatures occur.
The Multicell heater transfers heat energy through the radiant mode. Heat transfer can be significantly enhanced by thoroughly oxidizing the platen installation holes before running the heaters above a temperature of 538°C (1000°F). This can typically be accomplished with a torch head set with a low oxygen flame that leaves a sooty black residue inside the platen holes.
Original Instructions (English)
Loading...
+ 15 hidden pages
Buy Points How it Works FAQ Contact Us Questions and Suggestions Privacy Policy Cookie Policy Terms of Use