Service Manual – WB-14 Water Boiler
Contents
1. AMPERAGE 318 WIRING DIAGRAM WATER BOILER 14041 WD WB14 60 Product Warranty Information The Wilbur Curtis Company certifies that its products are free from defects in material and workmanship under normal use The following limited warranties and conditions apply 3 Years Parts and Labor from Original Date of Purchase on digital control boards 2 Years Parts from Original Date of Purchase on all other electrical components fittings and tubing 1 Year Labor from Original Date of Purchase on all electrical components fittings and tubing Additionally the Wilbur Curtis Company warrants its Grinding Burrs for Forty 40 months from date of purchase or 40 000 pounds of coffee whichever comes first Stainless Steel components are warranted for two 2 years from date of purchase against leaking or pitting and replace ment parts are warranted for ninety 90 days from date of purchase or for the remainder of the limited warranty period of the equipment in which the component is installed All in warranty service calls must have prior authorization For Authorization call the Technical Support Department at 1 800 995 0417 Effective date of this policy is April 1 2003 Additional conditions may apply Go to www wilburcurtis com to view the full product warranty information CONDITIONS amp EXCEPTIONS The warranty covers original equipment at time of purchase only The Wilbur Curtis Company Inc assumes no responsibility fo2. MODELS INCLUDED WB 14 12 e WB 14 60 CAUTION Please use this setup procedure before attempting to use this appliance Failure to follow the instructions can result in injury or the voiding of the warranty CAUTION DO NOT connect this unit to hot water The inlet valve is not rated for hot water WARNING DO NOT WN place this water boiler closer than six 6 inches from wall Unit must have adequate cross ventilation WARNING HOT LIQUID Scalding may occur Avoid splashing ISO 9001 2008 REGISTERED WILBUR CURTIS CO 6913 Acco Street Montebello CA 90640 5403 For the latest information go to www wilburcurtis com Tel 800 421 6150 Fax 323 837 2410 WILBUR Curtis Company NC Service Manual WB 14 Water Boiler Important Safeguards Symbols This equipment is designed for commercial use Any servicing other than cleaning and routine maintenance should be per formed by an authorized Wilbur Curtis Company service techni cian DO NOT immerse the unit in water or any other liquid To reduce the risk of fire or electric shock DO NOT open service panels No user serviceable parts inside Keep hands and other items away from hot areas of the unit during operation e Never clean with scouring powders or harsh chemicals Symbols WARNINGS To help avoid personal injury Important Notes Cautions from the factory Sanitation Requirements INSTALLATION
3. WC 858 VALVE INLET BRASS 50 GPM 220V 10W FOR WB 14 60 20 3700 REPAIR KIT INLET VALVE 21 WC 922 04 HEATING ELEMENT 3 5KW 220V W JAM NUTS amp SLCN WSHRS 22 WC 511 THERMOMETER DIAL RU S Illustrated Parts List TROUBLE SHOOTING PROBLEM WATER WILL NOT REFILL POSSIBLE CAUSE SOLUTION 1 Water line closed or Check the water system at your facility to make sure the line is open Replace the water filter clogged filter 2 Valve coil burned out Turn machine off Disconnect wires from water inlet coil terminals and connect a power cord to the terminals Plug cord into a 120V outlet and verify if water flows when plugged in and stops when power is disconnected If valve fails this test replace valve 3 Grounded probe When the water level gets below the probe tip water should automatically refill the unit If not pull wire off the probe terminal Water should now start flowing into the water boiler 4 Defective water level Disconnect wire from probe terminal With a voltmeter check voltage at the water inlet coil termi control board nals This should read 110 120 volts If no voltage is present check liquid level control L L C board Make sure the L L C board is supplied by 120V across terminals NEU and L1 120V The L L C board is grounded to the body of the machine by contacting the board to the mounting bracket Make sure board is grounded here Check for loose connections at terminals Repla
4. This Curtis unit is pre set and ready to go from the factory System Requirements e Water Supply 20 90 PSI Min Flow Rate 2 Electrical Refer to Electrical Schematic Factory Settings Water Volume 14 Gallons e Water Temperature 200 F NSF requires the following water connection 1 A quick disconnect or additional coiled tubing at least 2x the depth of the unit is required so that the unit can be moved for cleaning 2 This unit must be installed with adequate backflow protection to comply with applicable federal state and local codes 3 Water pipe connections and fixtures directly connected to a portable water supply shall be sized installed and maintained in accordance with federal state and local codes SETUP STEPS 1 The unit should be level left to right front to back on a secure surface 2 Install the supplied water faucet on the faucet shank in front of the unit NOTE A water filtration system must be used to help maintain trouble free operation In areas with extremely hard water we highly recommend the use of a Curtis approved water filter For our full line of filters please log on to www wilburcurtis com A water filtration system will greatly prolong the life of the unit and enhance the quality and taste of the product FOR THE LATEST SPECIFICATIONS AND INFORMATION GO TO WWW WILBURCURTIS COM Setup Steps Continued 3 Connect the water line to the water inlet fitting on
5. RED 10 COMMON STUD CHASSIS GROUND INLET VALVE 5 GPM 10W 120V CONTROL 120VAC FOR 240VAC NO NEUTRAL CHANGE INLET TO 240VAC AND MOVE WHT WIRES FROM NEUTRAL TO L2 5 FOR 120V 2W G CONNECTION REMOVE RED 10 AND CONNECT TO AT THE TERMINAL BLOCK 4 FACTORY DEFAULT IS 220VAC 3W G USE THIS DIAGRAM FOR OTHER MODELS WITH ADDED PREFIX AND OR WITH SECOND DASH NUMBER ON THEIR PART NUMBERS PROVIDED THEY HAVE THE SAME ELECTRICAL SPECS EXAMPLE 5 14 DO NOT CHANGE NOR SUBSTITUTE WIRE COLORS ALL WIRES SHALL BE 18AWG UL APPROVED APPLIANCE NOTES UNLESS OTHERWISE SPECIFIED WATER BOILER WB14 12 TITLE VOLTS WATTS AMPS CONNECTION PHASE WIRING DIAGRAM 120 2080 173 2W SINGLE WATER BOILER 14GAL R PART NUMBER REVISION 120 220 7000 32 3W G SINGLE WD WB14 12 Electrical Diagram WB 14 60 HEATER DPST 30A 277V CAP TSTAT 2X 220V 3 5KW BLUE 10 2 220V 1 PH 2W G oao TERMINAL BLOCK n BLUE 10 BLACK 10 gt 5 10 RED 10 COMMON STUD CHASSIS GROUND INLET VALVE 2 GPM 10W 220V LIQUID LEVEL RED i CONTROL 120 240 USE THIS DIAGRAM FOR OTHER MODELS WITH ADDED PREFIX AND OR WITH SECOND DASH NUMBER ON THEIR PART NUMBERS PROVIDED THEY HAVE THE SAME ELECTRICAL SPECS EXAMPLE 5 14 DO NOT CHANGE NOR SUBSTITUTE WIRE COLORS ALL WIRES SHALL BE 18AWG UL APPROVED APPLIANCE NOTES UNLESS OTHERWISE SPECIFIED
6. equipment must be maintained according to the manufacturer s recommendations 8 Replacement of items subject to normal use and wear This shall include but is not limited to light bulbs shear disks 0 rings gaskets silicone tube canister assemblies whipper chambers and plates mixing bowls agitation assemblies and whipper propellers 9 Repairs and or Replacements are subject our decision that the workmanship or parts were faulty and the defects showed up under normal use All labor shall be performed during regular working hours Overtime charges are the responsibility of the owner Charges incurred by delays waiting time or operating restrictions that hinder the service technician s ability to perform service is the responsibility of the owner of the equipment This includes institutional and correctional facilities The Wilbur Curtis Company will allow up to 100 miles round trip per in warranty service call RETURN MERCHANDISE AUTHORIZATION All claims under this warranty must be submitted to the Wilbur Curtis Company Technical Support Department prior to performing any repair work or return of this equipment to the factory All returned equipment must be repackaged properly in the original carton No units will be accepted if they are damaged in transit due to improper packaging NO UNITS OR PARTS WILL BE ACCEPTED WITHOUT A RETURN MERCHANDISE AUTHORIZATION RMA RMA NUMBER MUST BE MARKED ON THE CARTON OR SHIPPING LABEL All in
7. the rear of the unit Water volume going to the machine should be consistent Use tubing sized sufficiently to provide a minimum flow rate of two gallons per minute 4 Connect the unit to electrical outlet with appropriate amperage rating refer to schematic for power requirements 5 Turn on the circuit running power to unit The water inlet valve will open filling the unit When the boiler has filled turn on boiler at the thermostat twisting the knob clockwise 6 Heating tank will require 50 to 60 minutes to attain operating temperature Thermostat indicator will light at this time Parts List ITEM DESCRIPTION 1 WC 5602 LID 6 GAL WITH KNOB 2 WC 6118 01 COLLAR TOP WC 4303 O RING LINERS RU 4 WC 5335 TUBING 8 WATER INLET 5 WC 5502 01 PROBE WATER LEVEL 6 WC 5510 COVER PROBE WA WB14 WC 2401 ELBOW 3 8 NPT X 1 4 FLARE PLATED 8 WC 3528 LEG 4 ADJUSTABLE 3 8 16 THREAD ITALIAN STYLE 9 5334 TUBING 15 1 2 WATER INLET 10 501 THERMOSTAT WB 14 1141 WC 608 101 CONTROL BOARD LIQUID LEVEL 120 240VAC 12 WC 2100 GAUGE GLASS ASSY 7 13 WC 2005 WASHER 1 8 SHIELD CAP 14 WC 2024 GLASS GAUGE 7 15 WC 2006 WASHER 3 16 SHIELD BASE 16 WC 3705 REPAIR KIT S FAUCET 17 WC 1800HW FAUCET S SERIES H W 18 WC 3217 KNOB ELECTRIC THERMOSTAT 19 WC 801 VALVE INLET BRASS 7 50 GPM 120V 10W FOR WB 14 12 19
8. will increase the temperature about 20 F b Turning to the right will decrease the temperature by 20 F c To set the thermostat precisely at 200 F insert a thermometer probe into the water jacket through the steam hole just under the sprayhead Turn the screw 72 turn to the left d When the thermometer reaches 200 F slowly turn the adjustment screw to the right until the pilot light turns off CLEANING Regular cleaning and preventive maintenance is essential in keeping your water boiler looking and working like new To clean the water boiler prepare a mild solution of dish detergent and warm water Turn the thermostat dial to OFF and allow the unit to cool WN CAUTION Do not use cleansers bleach liquids powders or any other substance containing chlorine These products promote corrosion and will pit the stainless steel USE OF THESE PRODUCTS WILL VOID THE WARRANTY DAILY CLEANING Wipe exterior surfaces with a damp cloth removing spills and debris Remove the lid and clean it with a cloth soaked in a mild detergent solution Rinse and dry the lid Wipe off any traces of the cleaning solution with a cloth dampened with water Dry the cabinet surfaces oa gt Rub a stainless steel polish on the outside surfaces to protect the cabinet Electrical Diagram WB 14 12 DPST 30A 277V 2 3 5 KW HEATING CAP TSTAT ELEMENTS BLUE 10 110 220V TERMINAL 1 PH 3W G BLOCK BLACK 10 BLUE 10
9. E SHOOTING CONTINUED PROBLEM WATER DOES NOT REACH PROPER TEMPERATURE POSSIBLE CAUSE SOLUTION 2 Defective thermostat Replace thermostat if contacts are open when knob is fully clockwise and water temperature is less than 190 F You will measure 120 volts approximately to ground from both thermostat terminals when it is ON and from only one terminal when it is OFF 3 Heating element burned this water boiler there are two elements in parallel Failure of either will cause very slow heat out ing Perform the following tests a Clamp on ammeter test If both elements are good you will measure about 21 amps at 240 volts 24 amps at 208 volts or 29 amps at 120 volts If you measure only 10 to 12 amps check the current to each element to identify the defective part Ohmmeter or continuity test Disconnect all power by unplugging unit Disconnect one terminal to measure each element They should each have continuity or measure about 20 ohms Electric Thermostat ELECTRIC THERMOSTAT ADJUSTMENT Adjustment On electric water boilers thermostats are set at the factory to cut off at 200 F We do not recommend changing this If necessary adjustment is as follows 1 Rotate the thermostat knob to the right to the BOIL position Pull off the knob 2 Locate the tiny adjustment screw inside the stem see figure 1 Using a small screw driver adjust the temperature up or down By turning the screw 74 turn to the left
10. ce the L L C board POSSIBLE CAUSE CAUSE 222 SOLUTION ER 1 Defective water inlet Turn power off and observe water level If water continues to flow into the heating tank clean or valve replace leaky valve 2 Liquid level probe Disconnect the wire from probe terminal and touch the body of the heating tank with the terminal at limed up the end of this wire If the flow of water stops there is an issue with the probe Clean the probe and reconnect the wire If water continues to flow replace the liquid level probe 3 Non grounded or loose Liquid level control board must be securely grounded through the back of the board and the mount terminal connections ing bracket Check for loose connections at the terminals Check for voltage across the inlet valve at liquid level control terminals If there is 110 to 120 volts present at the inlet valve terminals when water level is touching board the probe tip replace the L L C board PROBLEM WATER DOES NOT REACH PROPER TEMPERATURE POSSIBLE CAUSE SOLUTION 1 Thermostat is turned Check the thermostat adjustment to make sure the knob is rotated clockwise to the desired tem OFF or set too low perature setting PROBLEM WATER OVERHEATS ELEMENTS DO NOT SHUT OFF POSSIBLE CAUSE SOLUTION 1 Defective thermostat Replace the thermostat You can sometimes operate temporarily by turning the thermostat knob to off until the boiling stops TROUBL
11. r substitute replace ment parts installed on Curtis equipment that have not been purchased from the Wilbur Curtis Company Inc The Wilbur Curtis Company will not accept any responsibility if the following conditions are not met The warranty does not cover and is void under the following circumstances 1 Improper operation of equipment The equipment must be used for its designed and intended purpose and function 2 Improper installation of equipment This equipment must be installed by a professional technician and must comply with all local electrical mechanical and plumbing codes 3 Improper voltage Equipment must be installed at the voltage stated on the serial plate supplied with this equipment 4 Improper water supply This includes but is not limited to excessive or low water pressure and inadequate or fluctuating water flow rate 5 Adjustments and cleaning The resetting of safety thermostats and circuit breakers programming and temperature adjustments are the responsibility of the equipment owner The owner is responsible for proper cleaning and regular maintenance of this equipment 6 Damaged in transit Equipment damaged in transit is the responsibility of the freight company and a claim should be made with the carrier 7 Abuse or neglect including failure to periodically clean or remove lime accumulations Manufacturer is not responsible for variation in equipment operation due to excessive lime or local water conditions The
12. warranty service calls must be performed by an authorized service agent Call the Wilbur Curtis Technical Sup port Department to find an agent near you 15211 7 30 13 12 2 revE e2 WILBUR CURTIS CO INC wie 6913 Acco St Montebello CA 90640 5403 USA Phone 800 421 6150 Fax 323 837 2410 Technical Support Phone 800 995 0417 M F 5 30A 4 00P PST E Mail techsupport wilburcurtis com Web Site www wilburcurtis com 8 FOR THE LATEST SPECIFICATION INFORMATION GO WWW WILBURCURTIS COM Printed U S A 8 2013 F 1981 Rev E
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