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U3/SRU
INSTALLATION & OPERATING GUIDE
BUNN-O-MATIC CORPORATION
POST OFFICE BOX 3227
SPRINGFIELD, ILLINOIS 62708-3227
PHONE: (217) 529-6601 FAX: (217) 529-6644
To ensure you have the latest revision of the Operating Manual, or to view the Illustrated Parts
Catalog, Programming Manual, or Service Manual, please visit the Bunn-O-Matic website, at
www.bunn.com. This is absolutely FREE, and the quickest way to obtain the latest catalog and
manual updates. For Technical Service, contact Bunn-
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BUNN-O-MATIC COMMERCIAL PRODUCT WARRANTY Bunn-O-Matic Corp. (“BUNN”) warrants equipment manufactured by it as follows: 1) All equipment other than as specified below: 2 years parts and 1 year labor. 2) Electronic circuit and/or control boards: parts and labor for 3 years. 3) Compressors on refrigeration equipment: 5 years parts and 1 year labor. 4) Grinding burrs on coffee grinding equipment to grind coffee to meet original factory screen sieve analysis: parts and labor for 3 years or 30,000 po
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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 where ambient temperature is in the range of 10-30°C (50-85°F). Brewer to be installed at a location where it can be overseen by trained personnel. CONTENTS Warranty ................................................................
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ELECTRICAL REQUIREMENTS - U3, U3A, U333, U38, U3833 CAUTION - The brewer must be disconnected from the power source until specified in Initial Set-Up. RED L2 RED L2 208V OR 240V 380V OR 440V 120V A.C. BLUE 208V OR 240V WHITE 208 OR L3 380V OR 440V 240V A.C. 208V OR 240V NEUTRAL 380V OR 440V BLACK 120V A.C. L1 BLACK L1 GREEN GREEN P1841 P1843 U3 & U38 requires 3-wire, grounded service rated U333 & U3833 requires 3-wire, grounded service 120/208 or 120/240 volts ac, U3/SRU-30 amp,U38-40 rated
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ELECTRICAL REQUIREMENTS - SRU, SRUA CAUTION - The brewer must be disconnected from the power source until specified in Initial Set-Up. BLACK BLACK L1 L1 208 OR 230V A.C. RED RED 240V A.C. L2 L2 GREEN GREEN GREEN GREEN P1842 P1842 SRU Models require 2-wire, SRUA-CE Models require 2-wire, grounded service rated 208 or 240 volts grounded service rated 230 volts ac, ac, 30 amp, single phase, 60 Hz. 30 amp, single phase, 50 Hz. CE REQUIREMENTS • This appliance must be installed in locations whe
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PLUMBING REQUIREMENTS These brewers must be connected to a cold water system with operating pressure between 20 (138) and 90 psi (620 kPa) from a 1/2" or larger supply line. A shut-off valve should be installed in the line before the brewer. Install a regulator in the line when pressure is greater than 90 psi (620 kPa) to reduce it to 50 psi (345 kPa). The water inlet fitting is 3/8" flare. NOTE - Bunn-O-Matic recommends 3/8" copper tubing for installations from the 1/2" water supply lin
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INITIAL SETUP - SRU 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. These instructions should be carefully followed before proceeding with initial setup. Be sure all electrical and plumbing connections are tight. 1. Disconnect the brewer from the power source. 2. Remove the
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ADJUSTING BREW VOLUMES CAUTION - Disconnect the power source from the brewer prior to the removal of any panel for the replacement or adjustment of any component. NOTE: Prior to setting or modifying batch sizes, check that the brewer is connected to water supply, the tank is properly filled, and a funnel support, funnel and funnel cover are in place. 1. Modifying batch sizes. To modify a batch volume, first check that the SET/LOCK switch is in the “SET” posi- tion on the circuit board. To in
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7. Remove funnel cover. Funnel should not be removed from brewer until drip out of coffee has been com- pleted. 8. To empty funnel, invert it over a waste container to dispose of filter and grounds. An additional flange is provided on the funnel to help make this step easier. NOTE: Hot water may be drawn from the hot water faucet during a brew cycle. However, if a large amount of hot water is drawn off (over 1 gallon) operator should wait to do so between brewing cycles. CLEANING NOTE: Tanks a
