BunnメーカーU3 U3Aの使用説明書/サービス説明書
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OPERA TING & SER VICE MANU AL BUNN-O-MA TIC CORPORA TION POST OFFICE BOX 3227 SPRINGFIELD, ILLINOIS 62708-3227 PHONE: (217) 529-6601 F AX: (217) 529-6644 10060.
Page 2 INTRODUCTION This brewer will brew a three gallon batch of coffee into each reservoir (one at a time). Each reservoir has its own dispensing faucet(s).The brewer also has a hot water faucet(s) for allied beverage use. It is only for indoor use on a sturdy counter.
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Page 4 ELECTRICAL REQUIREMENTS CAUTION - The brewer must be disconnected from the power source until specified in Initial Set-Up. U333 & U3833 requires 3-wire, grounded service rated 240 volt ac, 35 amp or 440 volts ac, 30 amp for U333,three phase, 60 Hz or 380 volts ac, 30 amp for U3833, three phase, 50 Hz.
Page 5 INITIAL SETUP CAUTION - The brewer must be disconnected from the power source throughout the initial setup, except when specified in the instructions. IMPORTANT: Brewer must be level and installed on a sturdy structure. Electrician's and Plumber's Instructions are provided.
Page 6 INITIAL SETUP (cont.) 6. Brewing cycles may be started whenever water temperature is correct. This condition is indicated by the dial thermometer on front of the brewer. Whenever the pointer is in the green, brewer is ready for brewing. The recommended brewing temperature is approximately 200 ° F (93 ° C).
Page 7 COFFEE BREWING 1. Brewing cycles may be started whenever water temperature is correct. This condition is indicated by the dial thermometer on front of the brewer. Whenever the pointer is in the green, brewer is ready for brewing. 2. Insert Bunn ® filter in funnel and add desired amount of coffee.
Page 8 PROBLEM Brew cycle will not start PROBABLE CAUSE 1. No water 2. No power or incorrect voltage to the brewer REMEDY Water lines and valves to the brewer must be open. (A1) Check the terminal block for 120 volts ac across the red and white terminals and the black and white terminal on three wire 102/ 208 volt or 120/240 volt models.
Page 9 TROUBLESHOOTING (cont.) PROBLEM Brew cycle will not start (cont) Brew cycle starts with brew lockout relay engaged. PROBABLE CAUSE 2. No power or incorrect voltage to the brewer (cont) 3. Water level below pump housing. (Water level in the hot water gauge glass should be approximately half full).
Page 10 TROUBLESHOOTING (cont.) PROBLEM Tank not filling Water running out of the overflow PROBABLE CAUSE 1.ON/OFF Switch (This switch must be in the "ON" position for the refill circuit to operate. 2. No water 3. Solenoid Valve 4. Probe 5. Liquid Level Board 1.
Page 11 PROBABLE CAUSE 1. Limit Thermostat CAUTION - Do not eliminate or bypass limit thermostat. Use only Bunn-O-Matic replacement part #29329.1000 2. Control Thermostat 3. Tank Heater(s) 4. Contactor 1. Circuit Breaker 2. Tank Heater(s) 1. Timer 2. Start Switch 1.
Page 12 TROUBLESHOOTING (cont.) PROBLEM Funnels overflow (cont.) Coffee reservoir overflows Brewer is making unusal noises PROBABLE CAUSE REMEDY 3. Pump - Flow Rate 4. Soft Water 1. Coffee reservoir not completely empty befor a brew cycle was started.
Page 13 SERVICE This section provides procedures for testing and replacing various major components used in this brewer should service become necessary.
Page 14 SERVICE (cont.) CIRCUIT BREAKER (120/208V and 120/240V Three Wire Models and 440V Four Wire Models) Location: The circuit breaker is located on the right rear of the component bracket. Test Procedures: 1. Disconnect the brewer from the power source.
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Page 16 RED to Left Tank Heater (T2) RED to Terminal Block(L2) BLK Thermal Fuse to Left Tank Heater BLK to left Tank Heater (L1) BLK to Right Tank Heater (T1) BLK to Terminal Block (L1) RED to Right T.
Page 17 SERVICE (cont.) CONTROL THERMOSTAT.
Page 18 SERVICE (cont.) FUSE AND FUSE HOLDER (208V, 240V, 230V Two Wire Models and 380V Three Wire Models) Location: The fuse and fuse holder are located on the right rear of the component bracket. Test Procedures: 1. Disconnect the brewer from the power source.
Page 19 LIMIT THERMOSTAT SERVICE (cont.).
Page 20 8. Disconnect the brewer from the power source and remove the jumper wire from terminal 4. If voltage is present as described, liquid level board is operating properly, proceed to #9. If voltage is not present as described, replace the liquid level board.
Page 21 SERVICE (cont.) LIQUID LEVEL BOARD AND LEVEL PROBE (cont.) T1 BLU to Solenoid Valve T2 BLK to ON/OFF Switch (All models except 230V-CE models) T3 WHI to Main Harness (120/208V, 120/240V, four .
Page 22 5. Disconnect the wires on the ON/OFF switch. 6. a) 120/208V, 120/240V, 208V, 240V, 380V and 440V Models - Check for continuity across the terminals on the rear of the switch with the switch in the "ON" (upper) position. Continuity must not be present when the switch is in the "OFF" (lower) position.
Page 23 SERVICE (cont.) PUMP ASSEMBLY.
Page 24 RELAY (BREWERS W/BREW LOCKOUT).
Page 25 SERVICE (cont.) RELAY (BREWERS W/BREW LOCKOUT) 120/208V, 120/240V, 208V, 380V, 440V AND 240V MODELS PRIOR TO #U300004095 230V MODELS #U300004095 AND UP FIG.
Page 26 SELECTOR SWITCH (HALF BATCH OPTION) FIG. 20 SELECTOR SWITCH (HALF BATCH) Location: The selector switch is located in the upper center of the switch mounting panel. Test Procedures: 1. Disconnect the brewer from the power source. 2. Disconnect the wires from the switch terminals.
Page 27 SERVICE (cont.) SOLENOID.
Page 28 SERVICE (cont.) SOLENOID 6. Remove the tank inlet tube grommet and discard. 7. Install new tank inlet tube grommet. 8. Install new solenoid assembly. 9. Install liquid level board, shield and secure sole- noid assembly and shield to the component bracket with a #10-32 screw and flat washer.
Page 29 START SWITCH (BREW).
Page 30 BLK to Contactor T1 (All Models Except 230V-CE Models) BLK (Thermal Fuse) to Contactor Top Left Ter- minal) (230V-CE Models) RED to Contactor T2 (All Models Except 230V-CE Models) RED (Thermal.
Page 31 SERVICE (cont.) THERMAL FUSES (230V-CE MODELS ONLY).
Page 32 SERVICE (cont.) TIMER (Early Models)(cont.) 5. With a voltmeter, check the voltage across the sockets P1 and P2 (blue and white wires) of the female connector on the main harness when the "ON/OFF" switch is in the "ON" (upper) position and the start switch pressed.
Page 33 DIGITAL TIMER (Late Models).
Page 34 SERVICE (cont.) DIGITAL TIMER (Late Models) BLU/BLK wire from TL5 to P1 WHI/GRN wire from TL4 to (WHI) Pump WHI/BLU wire from TL3 to (BLK) Pump WHI wire from TL2 to P2 BLK wire from TL1 to P3 J2 - Three Pin connector from Half/Full Batch Switch P2037 FIG.
Page 35 BLK from Terminal Block SERVICE (cont.) TRANSFORMER (380V THREE WIRE MODELS ONLY).
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Page 40 SCHEMA TIC WIRING DIAGRAM U3833 10060 080900.
Page 41 SCHEMA TIC WIRING DIGRAM U3833 10060 080900.
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Bunn U3 U3Aをまだ購入していないなら、この製品の基本情報を理解する良い機会です。まずは上にある説明書の最初のページをご覧ください。そこにはBunn U3 U3Aの技術情報の概要が記載されているはずです。デバイスがあなたのニーズを満たすかどうかは、ここで確認しましょう。Bunn U3 U3Aの取扱説明書の次のページをよく読むことにより、製品の全機能やその取り扱いに関する情報を知ることができます。Bunn U3 U3Aで得られた情報は、きっとあなたの購入の決断を手助けしてくれることでしょう。
Bunn U3 U3Aを既にお持ちだが、まだ読んでいない場合は、上記の理由によりそれを行うべきです。そうすることにより機能を適切に使用しているか、又はBunn U3 U3Aの不適切な取り扱いによりその寿命を短くする危険を犯していないかどうかを知ることができます。
ですが、ユーザガイドが果たす重要な役割の一つは、Bunn U3 U3Aに関する問題の解決を支援することです。そこにはほとんどの場合、トラブルシューティング、すなわちBunn U3 U3Aデバイスで最もよく起こりうる故障・不良とそれらの対処法についてのアドバイスを見つけることができるはずです。たとえ問題を解決できなかった場合でも、説明書にはカスタマー・サービスセンター又は最寄りのサービスセンターへの問い合わせ先等、次の対処法についての指示があるはずです。