Wilbur Curtis RU-1000-35 Operators Manual

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MODELS INCLUDED

• RU-150

• RU-225

• RU-300

• RU-600

• RU-1000

Wilbur Curtis Co., inC.

Service Manual – RU Series Automatic Urns

Important Safeguards/Symbols

This appliance is designed for commercial use. Any servicing other than cleaning and maintenance should be performed by an authorized Wilbur Curtis service center.

• Toreducetheriskofreorelectricshock,donotopensideorbottompanel.Therearenouser

serviceable parts inside.

• All repairs should only be performed by authorized service personnel.

• Keep hands and other items away from hot parts of the unit during operation.

• Never clean with scouring powders, bleach or harsh chemicals.

Symbols:

WARNING/CAUTION – To advise about conditions that may result in property damage,

personal injury or death

IMPORTANT – Notes about proper operation

Sanitation requirements

The RU Automatic Urn is factory pre-set and ready to go… right from the carton.

Factory Settings:

WARNING: HOT LIQUID, Scalding may occur. Avoid

splashing.

ISO 9001:2008 REGISTERED

WILBUR CURTIS CO., INC.

6913 West Acco Street

Montebello, CA 90640-5403

For the latest information go to

www.wilburcurtis.com

Tel: 800-421-6150

Fax: 323-837-2410

• Brew Temperature = 200°F

• Brew Volume = Set to requirements of coffee liner

System Requirements

 •WaterSource:20–100psi(minimumowrateof1gpm)

• Electrical: See attached schematic for standard model or visit www.wilburcurtis.com for your model.

CAUTION: Please use the setup procedures in this manual before attempting to use the brewer. Failure to follow the instructions can result in injury or the voiding of the warranty. See setup procedures on page 2.

Brewing Instructions

1. Place lter in basket. Pour coffee into lter. Place basket into liner.

Technical Support: 800-995-0417 M-F 5:30 a.m. - 4:00 p.m. PT

2. Rotate spray head over bed of coffee inside

lter.

Email: techsupport@wilburcurtis.com

3. Press BREW button on

control panel to begin brewing.

INSTALLATION AND OPERATING INSTRUCTIONS

SETUP STEPS

WARNING: DO NOT place this urn closer than six [6] inches from wall. Urn must have adequate cross-ventilation.

NOTE: A water ltration system must be used to help maintain trouble-free operation. Air must be purged from the cartridge prior to connection to equipment. In areas with extremely hard

water, we recommend the use of a Curtis approved water lter. For our full line of lters, please log on to www.wilburcurtis.com.

1. Attach adjustable legs, threading them into the holes beneath the four corners of the urn.

2. Place unit at counter height, on a rm, level base, near water and power supply connections. Level it left to right and front to back by rotating the feet on the 4 corners.

WARNING: Use the leveling legs

to level the brewer only. Do not use them to adjust brewer height. Do not extend them higher than necessary.

3. Install the water and coffee faucets.

4. Connect water line to inlet tting on valve. All Curtis automatic urns are equipped with a ¼” male are tting which must be connected to the water supply with a ¼” copper tubing and a ¼” are nut. Water pressure entering brewer is required to be stable and must provide minimum of 1 gallon per minute. Use water regulator for constant pressure. Required water pressures, 20 to 100 psi.

CAUTION: Don’t forget to close the valve once the water jacket has lled.

8. When the water jacket has lled, turn on the thermostat by turning the dial clockwise to the desired setting. It will take 50 to 60 minutes for the heating tank to reach operating temperature. On electric urns, the thermostat indicator will light at this time.

WARNING: When you hookup an

electric urn, use the proper wire gauge, plus 25% (see table on page 12). Never use fuses or breakers larger than

needed.

The body of the urn must be securely grounded with a separate grounding conductor and never with the neutral conductor of a single phase, 3 wire system. Refer to the wiring diagram included with each urn for wire gauge.

CAUTION: DO NOT connect this urn to hot water. The inlet valve is not

rated for hot water.

5. Turn on water valve.

6. Hook-up electrical power to the unit (refer to schematic for power requirements). If gas or steam, 120V circuit is required.

7. When power is turned on, water will start owing into the water jacket. To expedite the lling of the urn, you may use the emergency rell valve located behind the machine.

CARE AND MAINTENANCE OF URN

PREVENTIVE MAINTENANCE

1. Remove the spray head from the urn and

clean it once a week. More often in heavy lime

areas.

WARNING: Switch off the power to the

unit at the circuit breaker. Turn off the

water line running to the urn.

2. Clean the faucet seat cups twice a week and replace when cracked or leaking.

3. Periodic temperature checks and thermostat

adjustments should be made by authorized personnel.

CLEANING

To ensure the highest quality coffee, the urn must be cleaned daily after the last batch of coffee is

used.

Regular cleaning and preventive maintenance is essential in keeping your coffee urn looking and working like new.

CAUTION: Do not use cleaning products

containing chemicals that will damage stainless steel, ammonia and bleaches containing chlorine. Never use abrasives that will scratch the

outside surface of the urn.

DAILY CLEANING INSTRUCTIONS

WARNING: These steps involve working

with very hot water.

1. After all the brewed coffee has been drawn from the urn, run a brew cycle of fresh water. Spray the hot water into the liner, then thoroughly brush it out with a long handled brush.

TWICE A WEEK

The coffee urn liner must be scoured twice a week:

1. Be sure water jacket is full of water and at brewing temperature.

2. Fill the liner with several gallons of water and add at least 1½ ounces of coffee urn cleaning compound. Allow this solution to remain in the liner approximately 30 minutes. During this time, the thermostat should be set to BOIL.

WARNING: Very hot water.

3. Scrub the inside of the liner and cover with a long handled brush.

4. Drain all the urn cleaning solution and rinse by running several brew cycles with the spray head centered over the liner, draining the

rinse water between sprays.

5. Thoroughly clean the faucets.

WARNING: Never remove the faucet

when the liner has water or coffee in it.

Switch off the power to the unit at the circuit

breaker. Turn off the water line running to the

urn.

Use a long thin gauge glass brush to clean the

coffee gauge glass. Use the same brush to clean the tting at the bottom of the liner and the pipe connecting to the coffee faucet.

6. Leave a gallon or two of fresh water in the liner. Drain just before brewing coffee.

7. After the unit is clean, turn on the water supply and power to the unit.

2. Drain the water off then repeat step one. Run another brew cycle. Brush out the liner and drain. Wipe down the liner with a clean towel.

3. If urn is not going to be used immediately, pour a gallon or two of fresh water into the liner. Remember to drain off this water before making

another brew.

4. Wash the wire brew baskets with urn cleaner and rinse thoroughly.

ILLUSTRATED PARTS LIST AUTOMATIC URNS,

RU-150, RU-225, RU-300, RU-600, RU-1000 ELECTRIC

2 2A

3 3A 3B

78 78A 78B 78C

83 84

82*

80 80A 80B 80C

80D

79A 79B 79C

63 63A 63B 63C

64 64A 64B 64C

41 41A 41B

86 86A

47 47A 47B 47C

21 21A 21B 21C

31 31A 31B

37 37A

32 32A

4 4A 4B 4C

16 20

9 9A

*82 NOT INCLUDED WITH GAUGE GLASS ASSEMBLY.

INDEX №PART

№

DESCRIPTION

EQUIPMENT USED ON

1 WC-3205 KNOB, LID 1/4-20 FEMALE THRD USE ON WC-5601/2/3 ALL RU URNS 2 WC-5601 LID, LINER ASSY (SC)RU-150/300 RU-150, RU-300 2A WC-5603 LID, LINER ASSY RU225/600/1000 RU-225, RU-600, RU-1000 3 WC-3302 BREW BASKET WIRE W/FLAPS RU-300 RU-150, RU-300 3A WC-3303 BREW BASKET, WIRE W/ FLAPS RU-600 RU-225, RU-600 3B WC-3304 BREW BASKET, WIRE W/ FLAPS RU-1000 RU-1000 4 WC-5700 LINER, 3 GAL RU-150 RU-150 4A WC-5706 LINER, 6 GAL RU-600 RU-225, RU-600 4B WC-5704 LINER, 3 GAL RU-300 RU-300 4C WC-5708 LINER, 10 GAL RU-1000 RU-1000 5 WC-4303 O-RING, LINER RU-150/300 RU-150, RU-300 5A WC-43076 O-RING, LINER, RU’S, 6, 10 GA RU-225, RU-600, RU-1000 6 WC-1200 CORD, 14/3 SJTO 6’ BLK W/PLUG ALL GAS, STEAM & 3Ø RU URNS 7 WC-1408 GRIP, CORD 7/8” OD ALL GAS, STEAM & 3Ø RU URNS 8 WC-806 VLVE, 1/4” BR. BALL ASSY EMERGENCY REFILL RU’S ALL RU URNS 9 WC-53104 TUBE ASSY, 1/4x14.50 ER W/NUTS RU-150/300 RU-150, RU-300 9A WC-53105 TUBE ASSY, 1/4x17.00 ER W/NUTS RU-225/600 RU-225, RU-600 9B WC-53109 TUBE ASSY, 1/4” ER W/NUTS RU-1000 RU-1000 10 WC-2705 TEE, 1/4 X 1/4 FLARE X 3/8 NPT PLATED ALL RU URNS 11 WC-3217 KNOB, ELECTRIC THERMOSTAT RU ALL RU URNS 12 WC-801 VALVE, INLET BRASS .50 GPM 120V 10W RU/WB ALL RU URNS 13 WC-3700 KIT, INLET VAL. REP. USE ON WC-801/801R/885/890/858 ALL RU URNS 14 WC-813 FLOW WASHER, .5GPM .5” S45 ALL RU URNS 15 WC-3220 BEZEL, THERMOSTAT ELECTRIC URN’S ALL RU URNS 16 WC-3011 TERMINAL STRIP, 4-S ALL RU URNS (BEFORE 1/29/13) 17 WC-3305 FLAP, WIRE BASKET RU150/300 (2 REQUIRED) RU-150 & RU-300 18 WC-37166 KIT, AIR PUMP RU’S ALL RU URNS 19 WC-5843 BRACKET, AERATOR PUMP RU ALL RU URNS 20 WC-3600 TEE, CONNECTOR 3/16 POLYPROPYLENE RU-150 & RU-225 21 WC-38570 LABEL, INSTRUCTION PANEL RU150/RU-300 RU-150 & RU-300 (AFTER 1/29/13) 21A WC-38571 LABEL, INSTRUCTION PANEL RU225/RU-600 RU-225 & RU-600 (AFTER 1/29/13) 21B WC-38574 LABEL, INSTRUCTN PANEL RU1000 RU-1000 (AFTER 1/29/13) 22 WC-2405 ELBOW, 1/2 FLARE x 1/2 NPT ALL RU URNS 23 WC-2609 SWIVEL, 1/2” TUBE X 1/2 NPT ALL RU URNS 24 WC-2504 ELBOW, 1/2 NPT X 1/2 NPT ALL RU URNS 25 WC-1037 PUMP, WATER W/FITTINGS 120VAC ALL RU URNS 26 WC-3702 KIT, WATER PUMP SEAL RU’S USE ON WC-1000 ALL RU URNS 27 WC-37165 KIT, THERMOSTAT WC-500A/501A ALL RU URNS 28 WC-2605 CONNECTOR, 3/8 FLARE X 3/8 NPT ALL RU URNS 29 WC-2608 SWIVEL, 3/8 TUBE x 3/8 NPT ALL RU URNS 30 WC-2403 ELBOW, 3/8 FLARE x 3/8 NPT PLATED GEN USE ALL RU URNS 31 WC-5808 DOOR, CONTROL BOX LOUVER, RU-225/600 RU-225, RU-600 31A WC-5807 DOOR, LOUVER ACB RU150/300 RU-150, RU-300 31B WC-5809 DOOR, CONTROL BOX LOUVER RU-1000 RU-1000 32 WC-5322 TUBE ASSY, 1/4x20.00 WI W/NUTS RU-225, RU-600 32A WC-5321 TUBE ASSY, 1/4x17.00 WI W/NUTS RU-150, RU-300 33 WC-2929P FITTING, 1/2 NIPPLE/NUT PLATED ALL RU URNS 34 WC-300 POWER BLOCK 3-STA 175A 600V RU’S ALL RU URNS 35 WC-5307 TUBE, 3/16 ID x 3/32W SILICONE GEN USE ALL RU URNS 36 WC-522 THERMO., HI LIMIT HEATER CONTROL DPST 277V 40A ALL RU URNS 37 WC-402 37A WC-403

1,2

RELAY, HOLDING 120V COIL 10A RU’S ALL RU URNS (BEFORE 1/29/13)

1,2

RELAY HOLDING 120V 3 POLE 6.6A RES.@240V RU-1000 (BEFORE 1/29/13)

38 WC-102 SW, TOG NON-LIT SPST 15A 125/6A 250VAC RESIST. ALL RU URNS

OLDER UNITS

ITEMS 37 AND 37A, AFTER 1/29/13 SEE ITEMS 45, 45A, 45B

INDEX №PART

№

DESCRIPTION

EQUIPMENT USED ON

39 WC-5502-01 KIT, PRB, ASSY WATER LVL W/HEX FITTING, O-RNG & NUT ALL RU URNS 40 WC-405R-101 TIMER, AGITATION 90-260 VAC 30 SEC ALL RU URNS 40A WC-405R TIMER, AG. 120V 50/60HZ W/WIRES & BRKT RU’S ALL RU URNS 41 WC-304

TERMINAL STRIP, 14-S(RU1,6) RU-225, RU-600, RU-1000 41A WC-3031 TERMINAL STRIP 12-S RU-150, RU-300 41B WC-3021 TERMINAL STRIP, 6-S(GM,CRA) RU-1000 42 WC-3737 KIT, BREW SWITCH 120V RU’S ALL RU URNS 43 WC-58021 BRACK., WTR LVL. CONT. RU-150/225/300/600/1000 ALL RU URNS 44 WC-608-101K KIT, LIQUID LEVEL CONTROL BOARD RETROFIT ALL RU URNS 45 WC-603-101K-RU KIT, RET. TIMER, BREW SELECTOR 120V RU-300 W/1/2BB SEE NOTE

NOTE: 120V RU URNS BUILT BEFORE JAN. 2013 45A WC-603-101 TIMER, BREW SELECTOR 120V 2-20 MIN GEM-120A/RU’S SEE NOTE NOTE: 120V RU URNS (EXCEPT RU-1000) BUILT JAN. 2013 AND AFTER 45B WC-603-102 TIMR., BRW. SELT. 120V 2-20 MIN W/FULL & 1/3 BTCH OPT SEE NOTE NOTE: 120V RU-1000 URNS BUILT BEFORE JAN. 2013 45C WC-622-101K-RU KIT, RETROFIT BREW TIMER FULL & 1/3 BATCH 220V RU SEE NOTE NOTE: 208/220V RU URNS BUILT BEFORE JAN. 2013 45A WC-622-101 TIMER, BREW SELECTOR 220V 2-20 MIN GEM-120A/RU’S SEE NOTE NOTE: 208/220V RU URNS (EXCEPT RU-1000) BUILT JAN. 2013 AND AFTER 45B WC-622-102 TIMER, BRW SEL. 220V 2-20 MIN W/FULL & 1/3 BTCH OPT SEE NOTE NOTE: 208/220V RU-1000 URNS BUILT BEFORE JAN. 2013 46 WC-101 SWITCH, ON/OFF NON-LIT SPST MOMENT. 3/6A 250/120V ALL RU URNS 47 WC-3903 LABEL, INSTRUCT’S PANEL CURTIS RU-600 RU-600 47A WC-3900 LABEL, INSTRUCTION PANEL RU150 RU-150 47B WC-3901 LABEL, INSTRUCTION PANEL RU225 RU-225 47C WC-3902 LABEL, INSTRUCT’S PANEL CURTIS RU-300 RU-300 47D WC-3904 LABEL, INSTRUCT’S PANEL CURTIS RU1000 RU-1000 48 WC-3528 LEG, 4” ADJUSTABLE 3/8-16 THRD ITALIAN STYLE ALL RU URNS 49 WC-100 SW, RES-STOP N.C.NON-LIT SP MOMENT 10/15A 250/120V ALL RU URNS 50 WC-1501 FUSE, HOLDER ASSY W/5A FUSE ALL RU URNS 51 WC-1500 FUSE, 5 AMP ALL RU URNS 52 WC-511 THERMOMETER, DIAL RU’S ALL RU URNS 53 WC-5313 TUBE, SPRAYARM ASSY W/NUTS RU-300 RU-300, RU-150 53A WC-5314 TUBE, SPRAYARM ASSY W/NUTS RU-600 RU-225, RU-600 53B WC-5315 TUBE, SPRAYARM ASSY W/NUTS RU-1000 RU-1000 54 REFER TO VALVE CORE & SPRAY ARM ON PAGE 8 56 WC-5800 RING, STEAM ALL RU URNS 58 WC-2007 BRACKET, GAUGE GLASS GEM-3 ALL RU URNS 60 WC-2003 CAP, PLUG VENTED 44 ALL RU URNS 61 WC-2002 CAP, SHIELD W/CLEAN OUT ALL RU URNS 62 WC-2030 GLASS, GAUGE 13” RU-225, RU-600 63 WC-2108 GAUGE GLASS ASSEMBLY 13” USE ON RU-225 RU-225, RU-600 63A WC-2104 GAUGE GLASS ASSEMBLY 10” RU-150 63B WC-2105 GAUGE GLASS, ASSY 11” USE ON RU-150/300 RU-150, RU-300 63C WC-2113 GAUGE GLASS, ASSY 19” RU-1000 64 WC-2017 SHIELD, GAUGE GLASS 13” RU-225, RU-600 64A WC-2104 SHIELD, GAUGE GLASS 10” RU-150 64B WC-2014 SHIELD, 11” GAUGE GLASS RU-300 64C WC-2022 SHIELD, 19” GAUGE GLASS 1/8 NPT RU-1000 65 WC-1900 VALVE, GAUGE SHIELD SHUT-OFF 1/8 NPT ALL RU URNS 66 WC-1800L FAUCET, “S” SERIES LOCKING 1-1/32-14 UNS ALL RU URNS 70 WC-1805 SEAT CUP, “S” FAU USE ON WC-1800/B/LB/D/DL/L/WC-1803 ALL RU URNS 71 WC-3705 KIT, FAUCET S SERIES NONLOCK USE ON WC-1800 ALL RU URNS 72 WC-1906 C’ RING .917 X .760 X .090 TT-3 TC’S ALL RU URNS

OLDER UNITS

BEFORE

1/29/13

INDEX №PART

№

DESCRIPTION

EQUIPMENT

USED ON

73 WC-1903 NUT, UNI0N SHANK WB-10/WB-10-60/WB-30-12 ALL RU URNS 76 WC-2004 BASE, SHIELD GAUGE GLASS GEN USE ALL RU URNS 77 WC-2006 WASHER, .188 ID X .188 THK BOTTOM GAUGE GLASS GEN USE ALL RU URNS 78 WC-2031 GLASS, GAUGE 14” RU-225, RU-600 78A WC-2028 GLASS, GAUGE ⅝” X 11” RU-150, RU-300 78B WC-2029 GLASS, GAUGE ⅝” X 12” RU-300 78C WC-2037 GLASS, GAUGE ⅝” X 20” RU-1000 79 WC-2019 SHIELD, 14c” GAUGE GLASS RU-600 79A WC-2014 SHIELD, 11” GAUGE GLASS RU-150, RU-300 79B WC-2016 SHIELD, GAUGE GLASS 3/4D.X 12” RU-300 79C WC-2023 SHIELD, 20” GAUGE GLASS RU-1000 80 WC-2109 GAUGE GLASS, ASSY 14” RU-600, RU-225 80A WC-2105 GAUGE GLASS, ASSY 11” USE ON RU-150 RU-150 80B WC-2107 GAUGE GLASS, ASSY 12” SHORT WIN RU-300 80C WC-2114 GAUGE GLASS, ASSY 20” RU-1000 81 WC-2005 SHIELD CAP, WASHER, 1/8” GEM-3/TC’S W/SG ALL RU URNS 82 WC-2000 FITTING, AGITATION PLATED RU’S ALL RU URNS 83 WC-4205 NUT, 1/4 LOCK NPS BRASS ALL RU URNS 84 WC-2913 SPOUT OVERFLOW ALL RU URNS 85 WC-5810 COVER, W/A ELECTRIC BOX RU’S RU-600,1000 RU-600, RU-1000 86 WC-43123 O’RING, .549 ID X .103CS SILI CONE FOR HEATING ELEMENT ALL RU URNS 86A WC-43051 WASHER 5/8” TEFLON ALL RU URNS 87 WC-3402 SPRING, RETURN “S”SERIES FAUCT ALL RU URNS 88 — REFER TO HEATING ELEMENT CHART ON PAGE 9 89 WC-431 CONTACTOR, 120V 60A 3P DP (NOT SHOWN) ALL RU URNS

PARTS LIST DOUBLE SERVICE URNS (NOT SHOWN)

91 92 93

94 95

WC-5701 WC-5703 WC-5705 WC-5707 WC-5709 WC-5458

LINER, 3 GAL D/S RU-150 LINER, 6 GAL D/S RU-225 LINER, 3 GAL D/S RU-300 LINER, 6 GAL D/S RU-600 LINER, 10 GAL D/S RU-1000 PLATE, RING STEAM D/SERVICE

PARTS LIST 220V, 3 PHASE URNS (3W +G or 4W +G - NOT SHOWN)

WC-703

WC-710

WC-1200

WC-1408

100 101

WC-37165 WC-502

PARTS LIST EXPORT 220V CONTROLS (NOT SHOWN)

WC-3738

102

WC-417

103

WC-622-101K-RU

104

WC-633

105

WC-858

106

WC-1009

107

OLDER UNITS

REFERENCE THE ELECTRICAL DIAGRAM FOR YOUR SPECIFIC UNIT.

TRANSFORMER, .5KVA 240-120V RU’S TRANSFORMER, 240/480 120V,500VA RU/PCGT/CAFEPC

CORD, 14/3 SJTO 6’ BLK W/PLUG CORD GRIP, 7/8” O.D. KIT, THERMOSTAT WC-500A/501A

THERMOSTAT, CAPILLARY LWC OFF DPST

KIT, BREW SWITCH 220V RU RPLL RELAY, HOLDING 220V 2P 10A RU KIT, RETROFIT BREW TIMER FULL & 1/3 BATCH 220V RU TIMER, CUBE W/BRACKET 240V 25 SECS VALVE, INLET BRASS .50 GPM 220V 10W PUMP, AGITATION 220V

RU-150DS RU-225DS RU-300DS RU-600DS RU-1000DS ALL DS RUs

ALL 220V 3-PH RU

ALL 220V 3-PH RU ALL 220V 3-PH RU ALL 220V 3-PH RU ALL 220V 3-PH RU

ALL 220V 3-PH RU

ALL 220V RU ALL 220V RU RU-300 NO ½BB ALL 220V RU ALL 220V RU ALL 220V RU

SPRAY ARM ASSEMBLY

INDEX № PART №

1 2 3

4 5 6

7 8 9

11 12 13

14 15 16*

WC-2909 WC-2908 WC-4800 WC-3103 WC-4307 WC-2916 WC-4202 WC-2914 WC-3753 WC-4310 WC-4215P WC-3109 WC-2904 WC-4320 WC-2907 WC-3200

DESCRIPTION

SPRAY ARM ASSEMBLY, RU-225/600/1000 SPRAY ARM ASSEMBLY, RU-300, RU-150 SCREW, 8-32 x 1/8” SET S.S. CAP, CLEAN OUT VALVE CORE PLTD RU’s RING, PACKING TEFLON 2-REQ NEEDLE, BY PASS PLTD (SPRAY ARM) NUT, 3/8” - 24 JAM, PLATED SPOUT, BY PASS PLTD (SPRAY ARM) KIT, VALVE CORE REPLACEMENT WASHER, 7/8” INTERNAL TOOTH LOCK 410 STAINLESS STEEL NUT, 7/8” JAM PLATED VALVE CORE, PLATED SPRAY HEAD HOLDER PLATED O’RING, ½” I.D. SPRAY HEAD, ASSY (SC)RU-150/225/300/600/1000 HANDLE, SPRAY ARM BLACK PLASTIC RU/MWM

* Use only with valve cores that do not have Teon retractors.

HEATING ELEMENTS, LOCATION & CONFIGURATION

RU-150 & WB-14 1 PHASE

(SPIRAL)

RU-225 1Ø

220V, 1PH, 3 WIRE + GND

WC-913-01 220V, 5 KW

WC-911 -01 220V, 3.5KW

WC-911-02 220V, 3.5 KW

RU-150 & 225 3 PHASE

-01 -02 -03

(LEFT) (CENTER) (RIGHT)

RU-150-20 5.25 KW, 208/220V, 3PH, 3 OR 4 WIRE + GND.

WC-907-01 220V @ 1.75 KW

WC-907-02 220V @ 1.75 KW

WC-907 -03 220V @ 1.75 KW

RU-225-20 7.5 KW, 208/220V, 3PH, 3 OR 4 WIRE + GND.

WC-908-01 220V @ 2.5 KW

-01

(EXTERIOR)

-02

(CENTER)

RU-300, 600 & 1000 3 PHASE

THESE ELEMENTS ARE INTERCHANGEABLE

RU-300 7.5 KW, 208/220V, 3PH, 3 OR 4 WIRE + GND. 3 - WC-908 220V @ 2.5 KW EA.

RU-600 10.5 KW, 208/220V, 3PH, 3 OR 4 WIRE + GND. 3 - WC-911 220V @ 3.5 KW EA.

RU-1000 10.5 KW, 208/220V, 3PH, 3 OR 4 WIRE + GND. 3 - WC-911 220V @ 3.5 KW EA.

WC-908-02 220V @ 2.5 KW

WC-908-03 220V @ 2.5 KW

RU-300, 600 & 1000 1 PHASE

THESE ELEMENTS ARE INTERCHANGEABLE

RU-300 6 KW, 208/220V, 1PH, 3 WIRE + GND

2 - WC-910 220V @ 3 KW EACH

RU-300 8 KW, 208/220V, 1PH, 3 WIRE + GND

2 - WC-912 220V @ 4 KW EA.

RU-600 10 KW, 220V, 1PH, 3 WIRE + GND

2 - WC-913 220V @ 5 KW EACH

RU-600 8 KW, 220V, 1PH, 3 WIRE + GND

2 - WC-912 220V @ 4 KW EACH

RU-1000 10 KW, 220V, 1PH, 3 WIRE + GND

2 - WC-913 220V @ 5 KW EACH

ELECTRIC THERMOSTAT ADJUST

On electric urns, thermostats are set at the factory

to cut off at 200ºF. We do not recommend chang-

ing this setting. If necessary, adjustment is as

follows:

1. Rotate the thermostat knob to the right, to the BOIL position. Pull off the knob.

2. In the thermostat stem, locate the tiny adjustment screw (see illustration). Using a small screwdriver, adjust the temperature up or down:

a. Turning the screw ¼ turn to the left will

increase the temperature about 20°F.

b. Turning the screw ¼ turn 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

GAS URN INSTALLATION

The urn must be away from the wall no less than 6” and must have plenty of cross ventilation.

The water supply connection is the same in all RU models. All that is needed is 1/4” copper tubing with a 1/4” are nut and some sort of water lter in the line, before water enters the unit. Once the water connection is complete, open the water line, then plug in the power cord into an 115 V outlet. To facilitate the lling of the water jacket, you can open the emergency rell faucet (red knob) behind the unit, to increase the speed of lling the urn. Water must be above the base of the center gauge

glass before turning on the heat.

jacket through the steam hole (just under the spray head). Turn the screw ½ turn to the left. When the thermometer reaches 200°F, slowly turn the adjustment screw to the right until the pilot light turns off.

IMPORTANT: Be sure to shut off the

emergency rell valve after lling, to prevent overow!

GAS CONNECTION

All RU automatic urns are supplied with a 3/8” pressure connector at the end of the gas valve. This valve is connected to the thermostat. Use 3/8” O.D. stainless steel ex tubing to make the connection from the urn to the gas valve in your facility. When the connections are complete, turn the gas on. Check the line for leaks.

MAIN BURNER ADJUSTMENT

To adjust the main burner ame, turn the thermostat dial to 6½ for 195ºF or 7 for 200ºF. For older units (made before serial number 12327781), turn the screw under the gas cock handle in either direction to

regulate the ow of gas to the main burner.

PROCEDURE FOR LIGHTING OR RELIGHTING

1. Turn the GAS COCK handle to the OFF position, and the thermostat dial to the lowest tem-

perature position.

2. Wait a sufcient amount of time to allow gas that may have accumulated in the burner com-

partment to escape.

Turn the pilot dial to the PILOT position.

4. Push in the pilot dial (it has a slight inward trav el) and rotate it to the PILOT position. On older units, there is a separate must be pushed in to allow the dial to turn.

red SET button that

5. Continue pressing in on the dial while lighting the pilot burner. The pilot is located inside the burner compartment, between the main burn-

ers.

5. Once lit, continue pressing in on the dial for 30 seconds. If the pilot ame does not remain lit, repeat operation allowing longer period before releasing the pilot dial.

6. Turn the pilot dial to the ON position. Turn the thermostat dial to the desired position. The main burner will then ignite.

PROCEDURE FOR ADJUSTING PILOT

1. Remove the pilot adjustment cap. Adjust the pilot key, allowing the ame to completely envelop the end ⅜” of the thermocouple.

TO RE-CALIBRATE THE THERMOSTAT

The Unitrol thermostat is built to the most exacting standards and is a precision instrument which

should never need re-calibration. However through tampering, misuse or other reasons, if the thermostat is found to be more than 10º from normal, re-calibration may be performed by a qualied service technician. Following are the steps for this procedure:

Turn the thermostat to OFF to allow the unit to

cool down.

2. When the water temperature is room tempera

ture, turn the thermostat dial until the main burner ignites.

3. Slowly turn the thermostat dial counterclockwise until the ame on the burner goes out.

4. Place a thermometer into the water jacket to

determine the temperature of the water.

2. Adjust the pilot burner air shutter (if provided) to obtain a soft blue ame.

6. Turn the temperature stop to correspond to the actual water temperature. Mark the location of the stop for reference.

7. Turn the stop slowly until the control snaps off. Holding the stop to prevent rotation, carefully loosen the stop adjustment nut (see illustration

above)

5. Pull off the thermostat dial and lift off the outside

cover.

COPPER WIRE SIZE REQUIRED

SINGLE PHASE THREE PHASE

6 KW . . . . . . . .

8 KW . . . . . . . .

10 KW . . . . . . . .

ELECTRICAL DATA

#10 WIRE

#8 WIRE

5.25 KW . . . . . .

7.5 KW . . . . . . .

9 KW . . . . . . . .

10.5 KW . . . . . . .

12 KW . . . . . . . .

15 KW . . . . . . . .

#12 WIRE

#10 WIRE

#8 WIRE

#6 WIRE

MODEL

RU-150-12

RU-150-20

RU-225-12

RU-225-20

RU-300-12

RU-300-28

RU-300-20

RU-600-12

RU-600-28

RU-600-20

RU-1000-12

RU-1000-20

110/220

220

110/220

208/220

110/220

208/220

110/220

208/220

220

110/220

208/220

WIRESVOLTS WATTS AMPS PHASE

3W + GND

3W OR 4W + GND

3W + GND

3W OR 4W + GND

3W + GND

3W OR 4W + GND

3W + GND

3W OR 4W + GND

3W + GND

3W OR 4W + GND

5 KW

5.25 KW

7 KW

7.5 KW

6 KW

8 KW

7.5 KW

10 KW

8 KW

10.5 KW

10 KW

10.5 KW

22.1

13.8

31.8

27.3

45.5

27.6

45.5

27.5

ELEMENTS

1 - WC-913 -01 220V, 5 KW

1 - WC-907 -01 220V, 1.75 KW LEFT

1 - WC-907 -02 220V, 1.75 KW CENTER

1 - WC-907 -03 220V, 1.75 KW RIGHT

1 - WC-911 -01 220V, 3.5 KW

1 - WC-911 -02 220V, 3.5 KW

1 - WC-908 -01 220V, 2.5 KW LEFT

1 - WC-908 -02 220V, 2.5 KW CENTER

1 - WC-908 -03 220V, 2.5 KW RIGHT

2 - WC-910 220V, 3 KW

2 - WC-912 220V, 4 KW EA.

3 - WC-908 220V, 2.5 KW EA.

2 - WC-913 220V, 5 KW EA.

2 - WC-912 220V, 4 KW EA.

3 - WC-911 220V, 3.5 KW EA.

2 - WC-913 220V, 5 KW EA.

3 - WC-911 220V, 3.5 KW EA.

121314

TROUBLESHOOTING

To help service technicians in the eld to understand the operation of RU series models, we

separate the basic functions of the unit into four

different areas:

1. Heat Supply

2. Water Level Control

3. Brewing Cycle

4. Aeration

These four functions, even though they utilize the same power supply, work independently from

each other.

In the following illustrations, problems are isolated to only that system where a malfunction is located, so in the eld or shop, you will know exactly what components are involved.

HEAT SUPPLY OPERATION

For the contact points referenced in this section, see the schematic diagram below.

Components involved:

1. Power Block

2. Thermostat

HEAT SUPPLY

PROBLEM: Water will not heat up or heats up too slowly.

PROCEDURE: Take a voltage reading at terminals L1 and L3 of the power block (marked A & A)

to determine if there is power.

If there is power, turn the thermostat all the way to BOIL and clamp your ammeter around the heating element wire at point B shown in the single phase diagram below. The reading should be approximately the same as indicated on the serial plate of the machine.

If the meter reads only half of the amperage of the urn rating (check serial plate), one of the heating elements has burnt out. Clamp your ammeter at points C to determine which of the heating elements is bad. Replace the heating element.

If the water temperature in the urn is too hot (boiling) or too cold when the pilot light goes out, the thermostat must be calibrated. Reset the thermostat calibration, refer to the steps on page 10.

If the thermostat will not hold a calibration, replace the thermostat.

3. Heating Elements

WATER LEVEL CONTROL OPERATION

For the contact points referenced in this section, see the schematic diagram below.

Components involved:

1. Probe Assembly

2. Liquid Level Control Board

3. Water Inlet Valve Assembly

PROBLEM: Water is not owing into the urn jacket.

PROCEDURE:

Turn off the unit and test the probe assembly and check for grounded wiring. Pull the orange wire from the terminal of the liquid level control board at point A, with the quick disconnect terminal attached to the orange wire and with the other lead of the meter, touch the metal surface of the urn. Any reading in the meter dial will indicate the presence of a short to ground in either the terminals, wire or probe assembly. Find the short and repair it. If there is no reading at all on your ohmmeter, the probe is okay. Return the orange wire to terminal 4 of the liquid level control board

where it was removed.

Turn the unit on and clamp the leads of your voltmeter at the terminals of the valve coil as shown at B of the illustration below. Under normal conditions, the voltmeter should read 110 to 120 Volts while the urn is lling up and power to the coil should stop once the water level reaches the probe tip. If the voltmeter does not show voltage, the liquid level control board is not working properly. It is not sending power to the solenoid valve and the valve does not open. Replace the board.

If both the probe and the liquid level control board are functioning normally, check the water inlet valve. Turn on the unit and disconnect the white and the blue wires from the coil on the valve (points B). Use a lamp cord with alligator clips; hookup the terminals to the cord. Plug the cord into a 120 Volt outlet. The valve should open when plugged in and close when unplugged. Repeat this three or four times. If you don’t hear the sound of the solenoid, then the coil is bad. If you hear water owing through the valve when unplugged, the diaphragm is either torn or needs cleaning. Replace the water inlet valve.

BREWING OPERATION

For the contact points referenced in this section, see the schematic diagram below.

Components involved:

1. Fuse

2. Brew Switch

3. Timer

4. Stop Switch

5. Water Pump

PROBLEM: The brew switch light does not turn

on when pressed.

Test: Check the power supply and the fuse in the control box. It may be burned out.

Problem: The brew switch does not stay on, or light stays on only while the switch is pressed, but turns off when released and water comes out of spray head only while the switch is kept pressed.

Test the Brew Switch: Take a voltage reading at point A while the brew switch is pushed in. If you read 110 volts, it means that the switch is good.

Test the Timer: The timer resets itself to the N. O. position after every brewing cycle but if it fails to stop itself, it will remain closed and cause the problem in question.

To check the timer, power to the control circuit must be turned off. Disconnect the STP RED (point B) and STP BRN (point C) wires and take a continuity test between the two terminals 8 and 9 on the timer. If there is continuity, the timer is faulty and must be replaced.

Test the Water Pump: To test the water pump, press the brew switch and take a voltage reading between points E and F. If there is voltage and the pump does not run, replace the pump.

Test the Stop Switch: The last of the components involved in this operation is the stop button. The only function of the switch is to interrupt the current that energizes the timer after the brew switch has been depressed. A voltage reading at N.O. of the timer (point D) will indicate an open or closed condition.

AERATION SYSTEM

For the contact points referenced in this section, see the schematic diagram below.

Components involved:

1. Aeration Tubes

2. Air Pump

3. Aeration Timer

4. Manual Aeration Switch

AUTOMATIC AERATION

PROBLEM: Only one of the liners is aerated.

TEST: Inside the control box, there are two silicone tubes connecting the aeration pump to the ¼” copper tubes coming from inside the urn. Carefully, pull the silicone tubes from the copper tubes, press the manual aeration button and feel for air ow from the silicone tubes. Replace the pump if air does not blow through the tubes.

Air Pump Tubes.

NOTE: When replacing the silicone tubing on the copper tubes, make sure you do not cover the small holes on the copper tubes.

These are air release holes that pump into the liner so coffee can rell the gauge glass.

PROBLEM: Aeration system fails to operate automatically.

TEST: Determine that the aeration pump is operating by pressing the manual aeration button on the front panel to see that air comes from the

tubes.

AGITATION TIMER

Check the agitation timer. Remove the black wire from point A, terminal 1 on the timer. Disconnect the black wire from the aerator switch (point B). Plug this wire into the terminal 1 of the timer (dashed line). The air pump should immediately start pumping air into the liner. If this test fails, replace the agitation timer WC-405R. If the pump runs normally, then reconnect the wires at their normal connection points and proceed to test the

aeration switch as instructed below.

MANUAL AERATION

PROBLEM: Manual aeration is not present on either of the liners, yet automatic aeration operates normally.

TEST: Check the continuity of the manual aeration switch. Power to the control circuit must be turned off to check for continuity. Check at the yellow wire at point C of the agitation timer and B (black wire) of the manual aeration switch. Press the switch to look for continuity. Check for clean, tight connections at all terminals.

Product Warranty Information

Wilbur Curtis Co., Inc. certies 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, ttings and tubing.

1 year, labor, from original date of purchase on all electrical components, ttings and tubing.

Additionally, Wilbur Curtis Co., Inc. warrants its grinding burrs for forty (40) months from date of purchase or 40,000 pounds of coffee, whichever comes rst. Stainless steel components are warranted for two (2) years from date of purchase against leaking or pitting and replacement 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 & EXCEPTIONS

The warranty covers original equipment at time of purchase only. Wilbur Curtis Co., Inc., assumes no responsibility for substitute replacement parts installed on Curtis equipment that have not been purchased from Wilbur Curtis Co., Inc. Wilbur Curtis Co., Inc. 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 uctuating water ow 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): The manufacturer is not responsible for variation in equipment operation due to excessive lime or local water conditions. The equipment must be maintained accord- ing 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 to 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.

Wilbur Curtis Co., Inc. 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 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). THE RMA NUMBER MUST BE MARKED ON THE CARTON OR SHIPPING LABEL. All in-warranty service calls must be performed by an authorized service agent. Call the Wilbur Curtis Technical Support Department to nd an agent near you.

ECN 16768 12/08/15 @ 14.0 rev E

WILBUR CURTIS CO., INC.

6913 Acco St., Montebello, CA 90640-5403 USA Technical Support Phone: 800-995-0417

Email: techsupport@wilburcurtis.com

Phone: 800-421-6150 (M-F 5:30 a.m. - 4:00 p.m.PST)

Web: www.wilburcurtis.com

Printed in U.S.A. 12/2015 F-1950 rev Ep v2-5

Fax: 323-837-2410

Wilbur Curtis RU-1000-35 Operators Manual

Specifications and Main Features

Frequently Asked Questions

User Manual