Henkel K-450 User's Manual
Contents
1. The K 450 oven with its superior structural design and energy efficient heat exchange will provide many years of durable trouble free service Keen Ovens K 450 SPECIFICATIONS Electrode Capacity 450lbs 18 rods Volts 120 V 240 V 480 V Watts 1000W 1000W 1000W Thermostat Dial Adjustable Temperature 150 F 550 F Insulation 2 Interior Dimensions 19 5 D X 20 Net Weight 8ilbs Shipping Weight 86lbs Shipping Dimensions 26 X 28 X 26 Safety Precautions Read all instructions completely before attempting to operate this unit SAVE THESE SAFETY INSTRUCTIONS To reduce the risk of electrical shock fire or personal injury follow the guidelines below Before connecting unit to a power source be sure the voltage supplied is the same as that specified on the nameplate of the unit Check outlet to ensure proper grounding of the electrical cable Have a licensed electrician check the A C power outlet if you are not sure Use this unit for its intended purpose as described by literature Make sure power cord is located so that it will not be stepped on tripped over or otherwise subjected to stress of heat oil or sharp edges Do not close doors on the cord To reduce the risk of damage to the electric plug and cord disconnect by plug rather than by the cord Do not use this unit if cord or plug is in poor condition If it has been exposed to weather or immersed in water have a qualified serviceman inspect and rep2. 16 ee 180 F 25 350 F 50 type coatings there can T one hour one hour be a greater difference 5 a a 0 SSS in the maximum ne a ce a 225 F 50 temperature rasses o requirements for Bronzes Two hour total bakine than th Hard Surfacing rebaking than those Special Alloys shown This can be 7 handled by special Granulated or 90 F 20 E A request to the particular Agglomerated 50 RH max 240 F 50 Not required A Hin 2 manufacturer involved Flux CONTACT YOUR ELECTRODE MANUFACTURER FOR SPECIFIC INFORMATION INVOLVING CRITICAL OPERATIONS Electrode coating should not be exposed to the rebaking temperature without first having been reconditioned at a lower temperature Failure to observe this rule will result in breakdown of electrode coatings After rebake lower temperature to holding level until reissue
3. Sufficient Time to affect Weld Quality Before Opening After Opening Recondition Rebake IMPORTANT Step 1 Step 2 t This table is offered as a Standard 180 F 25 240 F 25 guide to proper storage EXX10 two hours one hour d holdi EXX11 epasge aoei ope rr and oven holding EXX12 30 F E 140 F 30 temperatures for the EXX13 60 10 RH Three hour total most common electrodes EXX20 in use today In EXX30 addition Iron Powder 180 F 25 325 F 25 recondition rebake EXX14 90 F 20 140 F 30 two hours f Sf ej ne hour ENEA procedures for electrode EXX24 50 RH max coatings that have been EXX27 Three hour total 8 A exposed to moisture for Iron Powder 180 F 25 700 F 100 a sufficient period of Low H ydrogen 90 F 20 two hours one half hour 400 F 50 a tamnn time to affect the weld EXX18 50 RH max i EXX28 Two amp one half hour total quality are included j Good jud t and th Low H ydrogen 180 F 25 600 F 100 he ae Du 90 F 20 manufacturer s EXX15 400 F 50 two hours one half hour 50 RH max e tna s tenn nn nan bennnn nana nnnnnnnnnnnnnnnnnnnnnnen recommendations should EXX16 Two amp one half hour total be your guide Low H ydrogen 180 F 25 700 F 100 High Tensile 90 F 20 5 two hours one half hour pois 5 50 RH max 400 FE 5097 Note In the HTS EXXX16 Two amp one half hour total Stainless electrode z 7 groups and 15 amp
4. decreases temperature Turning setscrew counter clockwise increases temperature One fourth 1 4 turn equals approximately 35 F 5 Allow unit to cycle at least three times and observe temperature at middle of fourth cycle Readjust calibration screw if eae necessary Replace dial knob 480 Volts 1000 Watts 20 AMP 480 Volt Grounding Plug NEMA 8 20P Not Provided Leer PILOT LIGHT eee AT THERMOSTSAT a NA HEATIR Model K 450 Repair Parts List ITEM QUAN UNIT DESCRIPTION PART NUMBER 1 1 Shelf Assembly 2 1 Handle 430102 3 1 Collar 4 1 Vent Plug 490108 5 1 Magnets 490103 6 1 Leg 7 1 Neon Pilot 120V 240V 301085 480V 301101 8 1 Thermostat 301038 9 1 Power Cord 301155 10 1 Elements 240V1000W 301027 120V1000W 301125 480V 1000W 301129 11 1 Element Cover 12 1 Name Plate 450103 13 1 Strain Relief 301043 Please state model number and serial number and specify voltage and wattage when ordering repair parts spare parts or accessory parts All necessary attaching hardware is supplied with each part ordered Item numbers refer to pictorial drawings below for repair parts HENKEL INC E Phone 985 345 2171 Fax 985 345 5653 Manufacturer of KEEN Ovens PO Box 1322 Quality Since 1923 Hammond Louisiana 70401 ar Flux and Electrode Stabilizing Guide Air Conditioned Dry Rod After Exposure to Moisture a Type AWS Storage Oven Holding
5. ES REG U S PAT OFFICE O i i Henkel Inc P O Box 1322 Hammond LA 70404 985 345 2171 www keenovens com ir Parts List IOUS IT IL IL WX OT Henkel Inc P O Box 1322 Hammond Louisiana 70404 985 345 2171 www keenovens com Models K 450 Bench Type Installation Instructions amp Repair Parts List One Year Limited Warranty Henkel Inc warrants its products against defects in material and workmanship Henkel Inc will either repair or replace without charge any properly installed product which fails under normal operating conditions within one year from date of installation provided it is returned to our factory transportation prepaid and our inspection determined it to be defective under the terms of this warranty The warranty covers only equipment manufactured by Henkel Inc and does not extend to transportation installation or replacement charges at the buyers facility nor does it apply to any other equipment of another manufacturer used in conjunctions with Henkel Inc equipment No other warranty expressed or implies exists beyond that included in this statement Recommended Spare Parts When it is critical to have continuous operation of this unit we suggest having the following spare parts on hand Heating Element Power Cord Thermostat K 450 Accessories List Stack Kit allows for stacking or piggybacking of two 2 K 450 ovens Thermometer Kit General Information
6. al throughout the oven due to the heat exchanging qualities of the Keen shelving system CAUTION Surface temperature of heating element will exceed 500 F Electrodes adversely affected by high heat should be stored on upper shelves of oven Guide to Storage See the enclosed guide to storage This guide may be used in the absence of storage information from the electrode manufacturer In critical situations contact your electrode manufacturer Functional Description These models are designed for the small to medium shop They allow storing at optimum temperature protecting electrodes from harmful moisture These ovens are compact and energy efficient therefore an economical buy All bench types are thermostatically controlled The shelf design accommodates 501b electrode containers eliminating the need to remove the rods from the container Loose electrodes may also be stored in shelf compartments Scheduled Maintenance The manufacturer recommends that the unit be unloaded and cleaned of debris and dust every six months It is recommended that a temperature probe be placed inside the unit and the thermostat calibration checked at this time Venting Your model K 450 oven is vented through a screened plug at the rear of the oven Troubleshooting The Keen oven model K 450 requires a minimal amount of electrical knowledge to repair if necessary IF OVEN FAILS TO OPERATE NO HEAT 1 Check power source 2 Check p
7. emove rods from oven 3 Remove element cover and pull temperature sensing tube from holder Soe 4 Loosen setscrew in thermostat knob and remove knob Remove chrome mounting ring bezel 5 Remove nine 9 mounting screws from leg assembly RNE GHR and lift oven clear of leg e ee oA 6 Remove electrical leads from thermostat and remove thermostat by pulling sensing tube through conduit Ss aes 7 To replace new thermostat pass sensing tube through conduit being sure there is adequate length to reach the holder 8 Reconnect electrical leads to new thermostat and mount thermostat to chrome ring bezel loosely with red indicting 240 Volts 1000 Watts line in upward position Place knob on thermostat stem and Grounding Plug check rotation of knob When knob turns freely remove and NEMA 5 15P tighten chrome mounting ring bezel 9 Replace leg assembly being sure wiring is not g crimped between oven wall and leg T 10 Replace thermostat knob 11 Insert temperature sensing tube into holder and Sue SENSOR THERMOSTAT CALIBRATION 1 2 replace element cover ES PILOT LIGHT A Turn on unit Set control dial at desired ven eal temperature ee E 2 Allow control to cycle at least three times and observe temperature at middle of fourth cycle If calibration is required carefully remove dial knob Do not turn shaft Turn calibration screw in center of dial shaft Turning set screw clockwise
8. lace parts as necessary WARNING NEVER HANDLE PLUG CORD OR UNIT WITH WET HANDS OR WHILE STANDING IN WATER Use special care when moving heavily loaded units e Do not store combustible material on or around the unit e Do not operate this unit empty e When using the unit at a distance where an extension cord becomes necessary a 3 conductor grounding cord of adequate size must be used for safety and to prevent loss of power and overheating Use only a UL listed extension cord suitable for outdoor use Make certain wire size 1s large enough for A C amperage rating of unit Operation Load oven with desired amount of electrodes To turn on the unit simply plug the power cord into appropriate single phase A C source and adjust thermostat to desired setting Check nameplate for voltage The 120V units are supplied with a three conductor 8 power cord The 240V and 480V units are supplied with an 8 UL listed 16 3 SJ power cord plug not provided All units meet electrical code requirements when used with a grounding plug and a grounded receptical CAUTION DO NOT USE ON D C POWER SUPPLY Temperature Setting The thermostat is adjustable from 150 F 37 8 C to 550 F 287 8 C Turn thermostat knob to desired temperature by aligning with red line on chrome bezel Pilot light indicates when power is supplied to the heating element The thermostat is accurate to 23 F 14 C at the sensor Temperature variance is minim
9. ower cord continuity Replace cord assembly if faulty 3 If pilot light glows voltage is being supplied to he heating element Check element continuity If defective replace If thermostat cannot be heard clicking on and off when dial is rotated and if pilot light fails to operate replace thermostat IF OVEN OVERHEATS 1 2 If oven fails to cycle on and off and reaches a temperature above 550 F thermostat is faulty and needs replacing If oven operates but is off from setting see calibration instructions Corrective Maintenance CHANGING THE HEATING ELEMENT SO a DES Disconnect power source and remove any rods from oven Remove element cover Remove element mounting nuts and top ceramic insulators Remove nine 9 mounting screws from leg assembly and lift oven clear of leg Remove wire connectors from element leads Remove old element from oven by lifting element over mounting bolts and pulling element leads through conduit Remove bottom ceramic insulators Install new male ceramic insulators element female insulators and hex nuts Insert element leads through conduit and reconnect with original electrical leads Replace front leg assembly being sure wiring 1s not crimped between leg and oven wall Model K 450 Wiring Diagrams 120 Volts 1000 Watts 15 AMP 125 Volt Grounding Plug CHANGING THE THERMOSTAT NEMA 5 15P Provided 1 Disconnect from the power source 2 R
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