Wilbur Curtis RU-1000 User Manual

MODELS INCLUDED

• RU-150

• RU-225

• RU-300

• RU-600

• RU-1000

CAUTION: Please use
this setup procedure

before attempting to use
this brewer. Failure to follow the
instructions can result in injury or the
voiding of the warranty.

WARNING: DO NOT

place this urn closer than

six [6] inches from wall.

Urn must have adequate
cross-ventilation.

CAUTION: DO NOT

connect this urn to hot

water. The inlet valve is
not rated for hot water.

WARNING When you

hookup an electric urn,

use the proper wire gauge,

plus 25%. 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.

Wilbur Curtis Company, inC.

Service Manual – RU Series Automatic Urns

Important Safeguards/Symbols

This equipment is designed for commercial use. Any servicing other than cleaning and routine maintenance should be performed by an
authorized Wilbur Curtis Company Service Technician.

• DO NOT immerse the unit in water or any other liquid

• To reduce the risk of re or electric shock, DO NOT open service panels. There are no user serviceable parts inside.

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

• Never clean with scouring powders or harsh chemicals.

Symbols

WARNINGS – To help avoid personal injury

Important Notes/Cautions – from the factory

Sanitation Requirements

The RU Automatic Urn is Factory Pre-Set and Ready to Go… Right from the Box.

Factory Settings:

• Brew Temperature = 200°F • Brew Volume = Set to requirements of coffee liner.

System Requirements

• Water Source: 20 – 100PSI (Min Flow Rate of 1 GPM)

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

• HEAT SUPPLY: Read the serial tag to determine the energy source (electric, gas, steam).

SETUP STEPS

1. Place unit at counter height. on a rm, level base, in such a way that it can be connected to water and power supply.

2. Install the water and coffee faucet.

3. Connect water line to inlet tting on valve. It is recommended that some type of water mineral reducing lter be used in the water
line before entering the unit. 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. Turn on water valve.

4. If setting up a gas urn, connect gas line with 3/8” O.D. ex tube from urn to gas valve in the facility. Check for leaks.

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

6. When power is turned on, water will start owing into the water jacket. You may increase the speed of the lling by using the
emergency rell valve.

7. 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.

NSF International requires the following:

1. A quick disconnect or additional coiled tubing (at least 2x the depth of the unit) so the unit can be moved for cleaning.

2. This equipment is to be installed with adequate backow protection to comply with applicable federal, state and local
codes.

3. Water pipe connections and xtures directly connected to a portable water supply shall be sized, installed and main­tained in accordance with federal, state, and local codes.

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: [phone]

Fax: [phone]

BREWING INSTRUCTIONS

WARNING HOT LIQUID, Scalding may occur. Avoid splashing.

1. Place lter in basket. Pour coffee into

lter. Place basket into liner.

For the latest specications and information go to www.wilburcurtis.com

Technical Support: 1-800-995-0417 M-F 5:30am-4:00pm PT

2. Rotate sprayhead over bed of coffee
inside lter.

Email: [e-mail]

3. Press the BREW button on control
panel to begin brewing.

Fig 1. Dial on the gas thermostat
set at 6½.

PILOT

DIAL

THERMOSTAT

DIAL

ELECTRIC THERMOSTAT ADJUSTMENT

On electric urns, thermostats are set at the factory to cut off at 200ºF. We do not recommend changing this. If necessary, adjustment is as follows:

1. Rotate the thermostat knob to the right to the BOIL position. Remove the knob by pulling off from the stem.

2. Locate the tiny adjustment screw, inside the stem (see gure 1). Using a small screwdriver, adjust the temperature up or down:

a. By turning the screw ¼ turn to the left will increase the temperature about 20°F.

b. Turning ¼ 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 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.

GAS URN INSTALLATION

The urn must be away from 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 115V 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.

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.

PROCEDURE FOR LIGHTING OR RELIGHTING PILOT

1. Remove the pilot control cover on the right side of the thermostat cover (held in place by four screws).

2. Turn the pilot dial to the OFF position and thermostat dial to the lowest temperature position.

3. Allow sufcient time for any gas that may still be in the burner compartment to dissipate.

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

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

6. Once lit, allow the ame to burn for approximately 30 seconds before releasing pilot dial. If the pilot ame does not remain lit,
repeat the operation, allowing for a longer period before releasing the pilot dial.

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

MAIN BURNER ADJUSTMENT

To adjust the main burner ame, turn the thermostat dial to 6½ for 195ºF or 7 for 200ºF; see gure 1. 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.

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 because of tampering, misuse or
other reason, if the thermostat is found to be more than 10º from normal, a re-calibration may be performed by a qualied service technician. The following are the steps for this
procedure:

1. Turn the thermostat to OFF to allow the unit to cool down.

2. When the water temperature is room temperature, 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.

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

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 gure 2).

8. Taking care not to move the temperature adjusting screw, turn the stop until it lines up with the tick mark (see step 6).

9. Hold the stop in place and tighten the stop adjustment nut.

10. Recheck the OFF temperature.

11. Replace the outside cover and thermostat dial.

THERMOCOUPLE CONNECTION

Poor contact between the thermocouple lead and the magnet assembly may cause the valve to be inoperative even when the pilot is in proper adjustment and position. If this is the
problem, clean and tighten the contact points. Remove the thermocouple and carefully clean the parts that make contact with the magnet assembly.

PROCEDURE FOR ADJUSTING PILOT

1. Remove pilot adjustment cap. Adjust pilot key, allowing ame to completely envelop the end ( ⅛”) of the thermocouple.

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

2