Download Wells WB-2 Operating instructions
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WELLS BLOOMFIELD A Division of Carrier Commercial Refrigeration, Inc. 2 ERIK CIRCLE, P. O. Box 280 Verdi, NV 89439 telephone: 888-492-2782 fax: 888-492-2783 www.wellsbloomfield.com 212 SUPPLEMENTAL SERVICE INSTRUCTIONS for WAFFLE BAKERS Model WB-1 WB-2 0 1 2 W EL LS W EL LS 0 1 2 IMPORTANT: WELLS MANUFACTURING PROPRIETARY INFORMATION. DISSEMINATION OF THIS INFORMATION TO ANYONE OTHER THAN WELLS AUTHORIZED SERVICE AGENTS IS STRICTLY PROHIBITED. TECHNICAL CONTENT OF THIS MANUAL IS DESIGNED FOR USE BY QUALIFIED PROFESSIONAL TECHNICIANS ONLY. PRINTED IN UNITED STATES OF AMERICA p/n 502973 Rev. A ECN-13145 S211 060921 cps PRECAUTIONS AND GENERAL INFORMATION RISK OF PERSONAL INJURY Installation procedures must be performed by a qualified technician with full knowledge of all applicable electrical and plumbing codes. Failure can result in personal injury and property damage. WARNING: ELECTRIC SHOCK HAZARD All servicing requiring access to non-insulated electrical components must be performed by a qualified technician. Only qualified technicians are authorized to open any access panel which requires the use of tools. Failure to follow this warning can result in severe electrical shock. CAUTION: RISK OF DAMAGE DO NOT connect or energize this appliance until all installation instructions are read and followed. Damage to the appliance will result if these instructions are not followed. This appliance is intended for use in commercial establishments only. This appliance is intended to prepare food for human consumption. No other use is recommended or authorized by the manufacturer or its agents. Operators of this appliance must be familiar with the appliance use, limitations and associated restrictions. Operating instructions must be read and understood by all persons using or installing this appliance. Cleanliness of this appliance is essential to good sanitation. Read and follow all included cleaning instructions and schedules to ensure the safety of the food product. Disconnect this appliance from electrical power before performing any maintenance or servicing. DO NOT submerge this appliance in water. Do not splash or pour water on, in or over any controls, control panel or wiring. Never use a wire brush or metal scraper on aluminum components. Use bristle or fiber brush to clean grids. The technical content of this manual, including any wiring diagrams, schematics, parts breakdown illustrations and/or adjustment procedures, is intended for use by qualified technical personnel. Any procedure which requires the use of tools must be performed by a qualified technician. This appliance is made in the USA. Unless otherwise noted, this appliance has American sizes on all hardware. Information in this manual reflects current production models as of September 1, 2006. Specifications, model numbers, product numbers and data subject to change without notice. xi 212 5029732 SvcManual for WB-1, -2 Waffle Bakers WARNING: TABLE OF CONTENTS Precautions & General Information …………………………… Electrical Specifications ..……………………………………….. Features & Operating Controls …………………………………. Operational Tests …………………………………………...……. Servicing Instructions Cabinet …………………………………………………………. Back Panel & Solid State Controls …………………………. Grids ……………………………………………………………. Cook Head Pivot ……………………………………………… Bypass Hi-Limit Thermostat (older units) ………………….. Wiring Diagram ……………………………………………..……. Exploded Views & Parts Lists ………………………………….. xi 1 2 3 5 6 7 9 10 11 12 INTRODUCTION This manual contains information needed to properly service and repair Wells Belgian Waffle Bakers. This manual applies to the following Wells Manufacturing models: WB-1 WB-2 For installation, operation and maintenance instructions, refer to Operation Manual p/n 37055. SPECIFICATIONS GENERAL DIMENSIONS: 212 5029732 SvcManual for WB-1, -2 Waffle Bakers WB-1 WB-2 10-1/8” Wide x 16” Deep x 8-3/4” High Appliance is 18-3/4” High with grid open. 19-13/16” Wide x 16” Deep x 8-3/4” High Appliance is 18-3/4” High with grid open. MODEL STYLE WB-1 Single Waffle Baker WB-2 Double Waffle Baker VOLTAGE 1ø WATTS AMPS POWER SUPPLY CORD 120 VAC 900 W 7.5 A NEMA 5-15P 208 VAC 676 W 3.25 A NEMA 6-15P 240 VAC 900 W 3.75 A NEMA 6-15P 120 VAC 1800 W 15 A NEMA 5-20P 208 VAC 1352 W 6.5 A NEMA 6-15P 240 VAC 1800 W 7.5 A NEMA 6-15P Refer to Wells General Layout Data sheet, p/n 37093 for current specifications. 1 FEATURES & OPERATING CONTROLS 24 28 18 19 12 33 50 6 37 23 ITEM DESCRIPTION COMMENTS 6 THERMOSTAT Maintains baking temperature; adjustable (see page 3) 12 LOWER GRID ASSEMBLY Lower cooking element; contains thermostat 18 UPPER GRID ASSEMBLY Upper cooking element 19 GRID HANDLE Used to safely raise / lower grid 23 DRIP TRAY Catches excess waffle batter; removable for easier cleaning 24 POWER SWITCH Energize / de-energize waffle baker 28 HINGE ASSEMBLY Supports upper grid; allows grid to be raised/lowered for baking 33 DATA PLATE Lists manufacturer information, agency approvals and electrical specifications 37 TIMER Mechanical “bell” timer; rings to indicated end of cook cycle 44 RUBBER FEET Provide means of leveling waffle baker; provide non-slip support 50 POWER CORD 115VAC NEMA 5-15P or 5-20P / 208/240VAC NEMA 6-15P 2 212 5029732 SvcManual for WB-1, -2 Waffle Bakers 44 OPERATIONAL CHECKS A. AMPERAGE CHECKS CAUTION: 1. Waffle Baker sections are tested separately. Use WB-1 amperage rating when testing an individual Waffle Baker section. ELECTRIC SHOCK HAZARD 2. Total amperage may be checked with an inductive amperage tester (Amprobe™ or similar) by encircling a single wire at the power switch. 3. Make all testing hookups with the Waffle Baker unplugged and when the cooking surfaces are cold. Live electric circuits may be exposed during these procedures. Take necessary precautions to avoid electric shock. CAUTION: B. TEMPERATURE CHECKS BURN HAZARD HOT SURFACES 1. Desired baking temperature is 390ºF ±5ºF (200ºC ±3ºC). Equipment surfaces may be hot during these procedures. Take necessary precautions to avoid burns. 2. Turn the power switch ON and allow Waffle Baker to heat for a minimum of 30 minutes. Insert a pyrometer of known accuracy between the closed grids and allow the readings to stabilize. 3. Temperature may be adjusted by inserting a 3/16” nutdriver through the hole in the bottom panel of the Waffle Baker and turning the shaft of the thermostat (item 6). VOLTAGE C. VOLTAGE TEST POINTS TOP GRID ASSEMBLY BOTTOM GRID ASSEMBLY AMPERAGE WB-1 WB-2 120 7.5 15.0 208 3.3 6.5 240 3.8 7.5 THERMOSTAT TP 1T TP 2T TP 3 TP 4 212 5029732 SvcManual for WB-1, -2 Waffle Bakers TP 1B TP 2B D. VOLTAGE CHECKS - 120V unit (208/240 similar - see wiring diagram) 1. Voltage between TP 1T and TP2T will be 120V when thermostat is calling for heat. 2. Voltage between TP 1B and TP2B will be 120V when thermostat is calling for heat. 3. Voltage between TP3 and TP4 will be 120V when thermostat is satisfied, and 0V when thermostat is calling for heat. 4. Voltage between TP4 and TP 2B will be 120V when thermostat is calling for heat. 5. Voltage between TP3 and TP 2B will be 120V whenever power switch is ON. 3 IMPORTANT: Always unplug appliance from electric power and momentarily ground all three prongs of the power cord before attempting resiatance checks. OPERATIONAL CHECKS (continued) CAUTION: E. EVALUATING THE RESULTS ELECTRIC SHOCK HAZARD 1. Presence of 120V in Test #1 or Test #2 (calling for heat but element not heating) indicates a defective element. CAUTION: BURN HAZARD HOT SURFACES Equipment surfaces may be hot during these procedures. Take necessary precautions to avoid burns. 2. Absence of 120V in Test #1 or Test #2 when calling for heat indicates: a.) power switch defective or OFF; or, b.) thermostat is defective; or, c.) a wiring or connector problem 3. Any reading other than 0V in Test #3 when calling for heat indicates a defective thermostat. 4. Absence of 120V in Test #4 when calling for heat indicates: a.) power switch defective or OFF; or, b.) thermostat is defective; or, c.) a wiring or connector problem 5. Absence of 120V in Test #5 whenever power switch ON indicates: a.) power switch defective or OFF; or, b.) a wiring or connector problem F. TROUBLESHOOTING SUGGESTIONS 1. In 208/240V units, the elements are wired in series: in 120V units, the elements are wired in parallel. Amperage readings 1/2 of normal indicate a 208/240V unit operating on 120V, or possible electrical problems in either the top or bottom grid assembly. Wiring investigation, as well as voltage and resistance measurements, may be required to isolate the ex act problem. 2. Amperage readings significantly above normal indicate either a unit operating on the wrong voltage, a partial short, or a deteriorated heating element. Again, voltage and resistance measurements will be required to pinpoint the problem. 3. Failure of an individual grid assembly to heat indicates electrical or component problems in that area. Voltage measurements will be required to isolate the exact problem. 4. Grids which heat, but do not come up to temperature, indicate either a defective element or a defective thermostat. 5. Grids which overheat uncontrollably indicate either a defective thermostat or an electrical short. 4 212 5029732 SvcManual for WB-1, -2 Waffle Bakers Live electric circuits may be exposed during these procedures. Take necessary precautions to avoid electric shock. SERVICING INSTRUCTIONS CAUTION: A. TOP GRID ASSEMBLY ELECTRIC SHOCK HAZARD Unplug appliance from electric power before removing any panel or access cover. CASTING AND HINGE ASSEMBLY CASTING, TOP 1 P/N 50327 SOLID CONDUIT P/N 55547 CONDUIT, CAST P/N 50329 Insert small diameter end into hinge 30 Pull ground wire up to center Ground wire gets 4“ of FIBERGLASS SLEEVE P/N 54573 (rl 100ft) after it is pulled into casting 32 7 7 6 Pull power wires up above casting numbers Power wires get 9“ of RUBBERIZED SLEEVE P/N 50284 (rl 10 ft) 2 Ground wire 3 HINGE PLUG P/N 50328 4 HINGE P/N 50322 SCREW 8-32 P/N 51715 (pk 100) 5 GRID & ELEMENT ASSEMBLY 8 GRID, TOP P/N 50454 212 5029732 SvcManual for WB-1, -2 Waffle Bakers 9 GASKET, GRID P/N 50337 Check to insure gasket is installed flush around casting 10 INSULATION PAD, WB ELEMENT TOP P/N 50430 11 ELEMENT, 120V 450W P/N 50450 Check for correct voltage and wattage. Assemble so that terminals will be on side of hinge with solid conduit. NOTE: Washer 12 CLAMP PLATE, TOP P/N 50431 13 SCREW, 8-32 x 5/16“ P/N 51715 (pk 100) Do not tighten until all screws are in place. Trap ground wire under this screw. Ensure that element terminals are centered in opening before tightening. 14 Insert stud on clamping plate of Grid & Element Assembly into hole in top casting of Casting & Hinge Assembly. Ensure that gasket is evenly seated, then secure assemblies with TenzNut (RING, RETAINING P/N 50222 pk 10). Insert PLUG, TOP CASTING P/N 58628 5 SERVICING INSTRUCTIONS (continued) CAUTION: B. BOTTOM GRID ASSEMBLY ELECTRIC SHOCK HAZARD Unplug appliance from electric power before removing any panel or access cover. THERMOSTAT P/N 61740 7 Ensure good contact with bottom surface of grid 1 GRID, BOTTOM P/N 58920 Check for chips or other blemishes 2 GASKET, GRID P/N 50337 Check to insure gasket is installed flush around casting 3 Apply graphite to mounting holes ELEMENT, 120V 450W P/N 50450 Check for correct voltage and wattage 4 5 6 8 PLATE, CLAMPING P/N 50445 Check for mounting studs pointing away from grid SCREW, 8-32 x 5/16“ P/N 51715 (pk 100) Do not tighten until all screws are in place. Ensure that element terminals are centered in opening before tightening. STRAP, THERMO P/N 62087 attaches with 8-32 truss head screws and 3 washers per screw. Torque to 7 ft-lbs. Do not over-tighten; over-tightening will de-calibrate thermostat! BOTTOM GRID ASSEMBLY 10 Route wires through LARGE hole in 11 bottom of casting. Check wires for grounds and chafe points GASKET, BOTTOM GRID P/N 50338 14 Route wires through FRONT holes in gasket and shell. Thermostat adjusting shaft goes through rear holes Rotate grid assembly to ensure wires and mounting studs align with bottom casting 12 Check to ensure gasket is flush around casting 13 CASTING, BOTTOM P/N 50326 Apply a small amount of grease to top of casting, then assemble grid to casting NUT, ACR 8-32 P/N 58627 (pk 10) 15 Insert mounting studs into holes in upper ledge of casting. Assemble using cap nuts 6 212 5029732 SvcManual for WB-1, -2 Waffle Bakers 9 JUMPER, THERMO P/N 62091 Use 1 washer per terminal prior to attaching wires to element. EXPLODED VIEW WB-2 (WB-1 similar) 50335 58920 (aluminum) 58980 (silverstone) 50327 51715 (pk 100) 50337 58628 50431 50450 50430 50450 50445 51715 (pk 100) 50337 62091 (pk 10) 61740 62087 58919 (aluminum) 58797 (silverstone) 55582 (pk 8) 50326 55530 (pk 100) 55547 (.56" dia.) 55552 (LS baker) 58627 (pk 10) 50338 60332 52101 50322 50346 (208/240V only) 50333 50328 55127 50222 (pk 10) 212 5029732 SvcManual for WB-1, -2 Waffle Bakers 21489 50329 0 1 2 51549 50447 0 1 2 W EL LS W 51239 EL LS 51038 (pk 10) 65728 (pk 4) 7 212 5029732 SvcManual for WB-1, -2 Waffle Bakers WIRING DIAGRAMS 8 WIRING DIAGRAMS (continued) 212 5029732 SvcManual for WB-1, -2 Waffle Bakers 9 IMPORTANT: WELLS MANUFACTURING PROPRIETARY INFORMATION. DISSEMINATION OF THIS INFORMATION TO ANYONE OTHER THAN WELLS AUTHORIZED SERVICE AGENTS IS STRICTLY PROHIBITED. TECHNICAL CONTENT OF THIS MANUAL IS DESIGNED FOR USE BY QUALIFIED PROFESSIONAL TECHNICIANS ONLY. Commercial Food Equipment Service Association Wells Manufacturing proudly supports CFESA Commercial Food Equipment Service Association SERVICE TRAINING - QUALITY SERVICE Genuine Parts Protect - YOU - All - Ways CUSTOMER SATISFACTION WELLS WELLS BLOOMFIELD A Division of Carrier Commercial Refrigeration, Inc. 2 ERIK CIRCLE, P. O. Box 280 Verdi, NV 89439 telephone: 888-492-2782 fax: 888-492-2783 www.wellsbloomfield.com PRINTED IN UNITED STATES OF AMERICA