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WATLOW ELECTRIC MANUFACTURING COMPANY

Installation & Maintenance Manual for MULTICELL

TM

Heaters

I&M MANUAL No: 316-42-21-1

Page: 1

Date: 3/15/2017

Rev: 5.00

WATLOW ELECTRIC MANUFACTURING COMPANY - 6 INDUSTRIAL LOOP RD.

– HANNIBAL, MO 63401 - PHONE 573-221-2816

Original Instructions (English)

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

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Summary of Contents for MULTICELL

Page 1: ...atlow 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 Descrip...

Page 2: ...eed 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 through...

Page 3: ...l 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 surfa...

Page 4: ...s 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 s...

Page 5: ... 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 f...

Page 6: ...eater 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...

Page 7: ... 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 hea...

Page 8: ...he recommended cooling rate is 38 C 100 F per hour Note Specific slow cool down rates are recommended to reduce the probability of creating differential thermal stresses that could break mounting fasteners shorten heater life warp the platen etc The cool down rate will vary with each press design Ramping to Operating Temperature After Maintenance Scheduled maintenance periods could necessitate coo...

Page 9: ...uickly enough to adequately protect the heater In cases where the thermostat bulb gets too hot before the system is turned off the thermostat bulb could rupture This could result in the thermostat remaining in the ON condition since there is insufficient fluid to move contacts apart WARNING It is the User s responsibility to ensure safety of the installation Heaters are components of thermal syste...

Page 10: ... if so equipped is critical In order to help prevent premature failure and a potentially hazardous condition in cases where consequences of failure may be severe use an appropriate third party approved liquid level protection device The liquid level should be such that the entire heater is fully submerged with enough liquid above the heater to adequately dissipate heat from itself as under normal ...

Page 11: ...minimize the risk of fire extreme care should be taken to locate the heater in a safe location and environment Ensure that combustible materials are maintained far enough away from the Product to ensure that they are free of the effects of high temperatures This Product is not suitable for use in Hazardous Classified Locations CAUTION Heater orientation can be important in order to ensure intended...

Page 12: ...ol indicates shown below where the protective earth ground should be connected in the electrical enclosure of the heater Electric heaters can be a source of stray current aka leakage Further a short to ground is a common end of life failure mode for many kinds of electric heaters To guard against injury or damage to equipment a GFI style circuit breaker selected to accommodate the electrical leaka...

Page 13: ...properly selected based on amperage electrical power rating ambient temperature and type of environment Feeder wire should also be housed in either rigid or flexible conduit which carries the same classification as the electrical enclosure For heaters that do not already have insulated supply leads provided the User must take action to cover any exposed conductive surfaces by adding suitable insul...

Page 14: ...ats should not be relied upon to remove electrical power for maintenance The use of a disconnect switch or circuit breaker is highly recommended and will allow the isolation of the heater when maintenance is required WARNING Risk of Electric Shock The Mains Line voltage applied to the heater must always be equal to or less than the voltage rating marked on the heater s nameplate Some heaters are s...

Page 15: ...heater the following items should have been checked with the Main Line voltage disconnected Failure to do so could result in damage to the heater when it is energized 1 Electrical terminations are tight and wiring is per wiring diagram when supplied with heater 2 Care should be taken to ensure all mounting features are tight 3 Proper disconnecting means and fusing have been installed 4 The voltage...

Page 16: ... fuse rating Fuses should be at least 25 more than full Load Amperage Disconnect heater power source Check the heater resistance To ground This should be no less than 50 Megohm Refer to Megohm checking Check heater enclosure for loose or oxidized connections repair and tighten as necessary Check heater enclosure for presence of condensation Conduit seals or drains may be required Not enough power ...

Page 17: ...ersonal Protection Equipment 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 ...

Page 18: ...r is in needed of replacement please contact the factory for further assistance in resolving this issue Thermal cycling may cause sealed joints to relax causing a leak Inspect all sealing related features and replace gaskets and or tighten connections if necessary Replacement Parts Please contact a Watlow representative directly to order additional or replacement parts If your Watlow representativ...

Page 19: ...he applicable terms and conditions please contact Watlow customer service to obtain a Return Material Authorization RMA number before returning any item for repair or replacement The following information is needed to process a returned Product expeditiously Customer name Customer account number Contact Name Phone Number Part number E mail Address Quantity P O number Reason for return Application ...

Page 20: ...ntenance Manual for MULTICELLTM Heaters I M MANUAL No 316 42 21 1 Page 20 Date 3 15 2017 Rev 5 00 WATLOW ELECTRIC MANUFACTURING COMPANY 6 INDUSTRIAL LOOP RD HANNIBAL MO 63401 PHONE 573 221 2816 Original Instructions English Declaration of Conformity page 1 ...

Page 21: ...ntenance Manual for MULTICELLTM Heaters I M MANUAL No 316 42 21 1 Page 21 Date 3 15 2017 Rev 5 00 WATLOW ELECTRIC MANUFACTURING COMPANY 6 INDUSTRIAL LOOP RD HANNIBAL MO 63401 PHONE 573 221 2816 Original Instructions English Declaration of Conformity page 2 ...

Page 22: ...tenance Manual for MULTICELLTM Heaters I M MANUAL No 316 42 21 1 Page 22 Date 3 15 2017 Rev 5 00 WATLOW ELECTRIC MANUFACTURING COMPANY 6 INDUSTRIAL LOOP RD HANNIBAL MO 63401 PHONE 573 221 2816 Original Instructions English THIS PAGE LEFT INTENTIONALLY BLANK ...

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