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Manafacture: Bloomfield File size: 1.86 mb File name: Language of manual:

The Test Program will also assist in isolating and testing specific components. As an example to test the three main components in the heater system, go to the test program and proceed to turn the “heater on”. Use a meter or test light to determine if power is getting to and from: the triac, the high limit and the element. SUGGESTIONS FOR REMEDIAL ACTION ERROR MESSAGE CAUSE 1. “Probe/Heater” Error RESET by holding CANCEL switch for 3 seconds 2. “Overheat” Error RESET by holding CANCEL switch for 3 seconds 3. “No Water Sensed” Error RESET by holding CANCEL switch for 3 seconds Controller has turned heating element on for 5 minutes without sensing a +2.F change in water temperature. Water temperature has exceeded Maximum Water Temperature programmed into “Machine Settings” menu. Inlet valve energized but no water is sensed during regular operation for 60 seconds; or. no water sensed during start-up (manual or timed) for 4. minutes. 1. Temp Probe may not be connected properly, or may be defective. CHECK & CORRECT. To test probe, go to Test Program and view probe value. A value of over 155 indicates a defective probe; a value of under 15 indicates a bad connection of the probe to the board. With an ohmmeter measure resistance of probe. At 212.F, resistance is approx. 2,000.. If less than 1800. at room temperature, probe is defective. 2. May be boiling due to high altitude (boiling point below Brew Temp.) or Triac has failed ON and hi-limit has interrupted power to heating element. REDUCE BREW TEMP. CHECK TRIAC; REPLACE IF DEFECTIVE. 3. Heating element defective. CHECK ELEMENT; REPLACE IF DEFECTIVE. 4. Hi-limit thermostat may be cutting out at too low a temperature. CHECK HILIMIT THERMOSTAT; REPLACE IF DEFECTIVE. (Note; hi-limit will reset itself if allowed to cool by 30.F, making troubleshooting a challenge as the brewer cools then functions normally.) 5. Heating element may be encrusted with lime or scale build-up. DELIME BREWER AS DETAILED ON PAGE 16. 1. Brew Temperature may be set too close to Maximum Temperature. Brew Temperature should be at least 5.F below Maximum Water Temperature. LOWER BREW TEMPERATURE or RAISE MAXIMUM TEMPERATURE (Software versions after May, 1999 enforce the 5.F differential) 2. Triac has failed ON; element continues to heat even when controller is OFF. CHECK TRIAC; REPLACE IF DEFECTIVE. 3. Temp Probe defective. See probe test procedure in Item #1 above. CHECK PROBE; REPLACE IF DEFECTIVE. 1. Sleeve on water level sensor is too long, or sensor is not pushed down fully. Sensor should extend beyond sleeve a minimum of .” to a maximum of l”. REMOVE TANK LID, CUT SLEEVE TO PROPER LENGTH. ENSURE SENSOR IS PUSHED DOWN ALL THE WAY. 2. Wiring to water level sensor disconnected or defective; or, sensor pulled out of tank. CHECK & CORRECT. 3. Water level sensor may be encrusted with lime build-up. CLEAN SENSOR. 4. Water supply may be OFF. CHECK & RESTORE WATER SUPPLY. 4. “Keyswitch A switch on the keypad 1. Switch has been accidentally held for 10 or more seconds. RELEASE SWITCH Locked” Error has been held down for 2. Defective keypad. PRESS & HOLD “CANCEL” FOR 3 SECONDS. Observe RESET as more than 10 seconds. brewer to determine if problem persists. (Note: available on software versions above MFW 275 Rev. 3.4 and later versions only). 5. “Valve Fault” Detection of a problem with 1. Wiring to either inlet or outlet valve not properly connected. CHECK WIRING AND Error the valve switching system, CONNECTIONS. RESET by or with the wiring to the 2. The controller has two switches for each valve and one or both has been detected disconnecting/ valves. as failing ON. (This prevents the brewer from operating unless both switches are reconnecting working properly.) REPLACE CONTROLLER. electric power 17 EXPLODED VIEW & PARTS LIST 18 3-WARMER IN-LINE BREWER MODELS: 2012, 2016 EXPLODED VIEW & PARTS LIST (continued) 19 EXPLODED VIEW & PARTS LIST (continued) 20 3-WARMER STEP-UP BREWER MODELS: 2072, 2074 EXPLODED VIEW & PARTS LIST (continued) 21 WIRING DIAGRAMS White #11 White #11 White #10 Red #6 Black #9 Black #9 Brown #1 #1 #2 #3 White White White #11 Red Red #4 Blue Blue #5 Orange #3 Orange #7 Orange #8 Red #6 Brown #1 Blue #2 Black #9 White #12 White #10 White #11 Model 2012 p/n 74420 IN-LINE BREWER 120 VOLT STEP-UP BREWER 120 VOLT 22 WIRING DIAGRAMS (continued) 23 Black #16 Orange #3 Blue #7 Black #8 Red #14 1 2 3 4 Red #6 Brown #1 Blue #2 Black #9 White #12 White #10 White #11 Tank Heater 3200 Watt 240 Volt White #11 Red #13 Green #17 Brown #1 Black #15 120/240 Single Phase 3500 3 WARMER IN-LINE BREWER #1 #2 #3 White White White #11 Red Red #4 Blue Blue #5 Model 2016 p/n 74531 White #11 White #11 Blue #4 Black #16 Brown #5 Orange #3 Blue #7 Black #8 Red #14 1 2 3 4 Red #6 Brown #1 Blue #2 Black #9 White #12 White #10 White #11 Tank Heater 3200 Watt 240 Volt White #11 Red #13 Green #17 Brown #1 Black #15 120/240 Single Phase 3500 Model 2074 p/n 73800 IN-LINE BREWER 120/240 VOLT STEP-UP BREWER 120/240 V...

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