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Installation, Operation & Service Manual
High Speed Brewing Urn (Top Line)
TABLE OF CONTENTS
General Description.................................3
Roughing-In Drawing...............................4
Installation...............................................5
Spray-Over Time/Volume/Rate................6
How To Brew............................................7
Thermostat/Adjustments/Timer...............8
Care and Cleaning..................................9
Explanation of Agitation System............10
Operation Malfunction and Service........11
Dual Lever Control................................12
Troubleshooting Level Control...............14
Service/Troubleshooting Agitation.........18
Sprayover Pump Breakdown.................20
Illustrated Parts Breakdown...................21
List of Illustrated Parts...........................22
Parts List...............................................23
Wiring Diagram - Controls.....................24
Heater Wiring Diagram - 480V..............26
© Grindmaster Corporation™, 1995
PRINTED IN USA
American Metal Ware
For
Model 87710
Dual Wall Insulated
X
Electric
Special Features
After completing installation and set-up, the
equipment owner should keep this manual for
future reference.
Grindmaster Corporation™
4003 Collins Lane
Louisville, Kentucky 40245 USA
(502) 425-4776
(800) 695-4500
(800) 568-5715
FAX: (502) 425-4664
www.grindmaster.com
®
Steam
(USA and Canada only)
(technical service only)
1104 Form # AM-307-02
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Table of Contents
Troubleshooting
Related Manuals for Grindmaster AMERICAN METAL WARE 87710
Summary of Contents for Grindmaster AMERICAN METAL WARE 87710
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Page 1: Table Of Contents
Sprayover Pump Breakdown...20 Illustrated Parts Breakdown...21 List of Illustrated Parts...22 Parts List...23 Wiring Diagram - Controls...24 Heater Wiring Diagram - 208V/240V...25 Heater Wiring Diagram - 480V...26 © Grindmaster Corporation™, 1995 PRINTED IN USA ® Model 87710 Dual Wall Insulated Electric Special Features... -
Page 2: General Description
General Description This urn is an automatic, push button operated, volume brewing unit. It consists of a non- pressure vented water compartment of large capacity into which two stainless steel coffee liners are inserted. Also installed within this water compartment are electric immersion heaters thermostatically controlled through a contactor relay, to keep the water always at the desired temperature. -
Page 3: Roughing-In Drawing
Page 4 American Metal Ware 87710E Coffee Urn... -
Page 4: Installation
Installation IMPORTANT TO ALLOW 6” CLEAR SPACE FOR ACCESS TO CONTROL BOX. Urn should be level, both front to back and left to right. CONNECT WATER LINE. 3/8” NPT water inlet located at left end and provide shutoff valve and union in supply line near urn. 140 mum - 70PSI maximum. -
Page 5: Spray-Over Time/Volume/Rate
Spray-Over Time - Volume - Rate Timer and spray-over rate are factory set as per information below. If other volumes of water or a faster or slower spray-over rate is desired, see following instructions: Timer Adjustment Turn adjustment knob clockwise to decrease time, counterclockwise to increase time. Operation Start-Up Checks/Brew Cycle Adjustments Turn thermostat dial to BREW position. -
Page 6: How To Brew
How To Brew In An Automatic Urn Place filter in brew basket with designated amount of ground coffee (automatic urns are designed to use 1, 2, 3 or 4 lbs. of coffee). Make certain you have a level bed of coffee. Consult your coffee supplier for exact brewing specifications. -
Page 7: Thermostat/Adjustments/Timer
Thermostat The thermostat is factory set so that the knob on the BREW setting holds the urn at brewing temperature toward the HI end of brew zone on the thermometer dial. Then, if turned back to HOLD position, the thermostat should cycle on and off and hold at the LO end of the BREW zone on the thermometer. -
Page 8: Care And Cleaning
Care and Cleaning of Coffee Urn Always rinse the urn immediately after each use. Add small quantity of hot water, brush sides and rinse with hot water until it runs clean. Urn is now ready for next batch. At end of each day clean and brush urn several times, then rinse thoroughly with hot water. -
Page 9: Explanation Of Agitation System
Solid State Coffee Agitation System Coffee agitation is accomplished with low pressure air, bubbling up through the coffee in liner. Air enters at the top coffee gauge elbow fittings and forces coffee down out of sight in gauge glasses during the agitation period. Air continues through into the liner connection elbow, and bubbles up from this center fitting. -
Page 10: Operation Malfunction And Service
Operation Malfunction and Service Problem - Thermostat dial turned to brew and water in tank remains cold. Possible Cause 1. No power at urn. 2. Power at urn, but no power at heater terminals. 3. Power at heater terminals, but no heat. PROBLEM: Water boils continuously with thermostat dial on position “BREW”... -
Page 11: Dual Lever Control
Dual Level Control Auto Refill And Low Water Cutoff System 1. Dual Level Control: What it does: AUTO REFILL of the water compartment to keep the tank filled with water. When water is used, the fill valve opens automatically to let more in. The fill valve closes when the water level reaches full. - Page 12 2. Description and Operation of Dual Level Control System (continued): Operation Water Level 1) Below both electrodes 2) Rises to low electrode above above heater coils 3) Rises to high electrode 4) Falls below high electrode only 5) Falls below low electrode. (Same as condition no.
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Page 13: Troubleshooting Level Control
IV) Trouble Shooting Auto Refill, Low Water Cutoff, and Dual Level Control System Page 14 American Metal Ware 87710E Coffee Urn... - Page 14 IV) Trouble Shooting Auto Refill, Low Water Cutoff, and Dual Level Control System (continued) American Metal Ware 87710E Coffee Urn Page 15...
- Page 15 IV) Trouble Shooting Auto Refill, Low Water Cutoff, and Dual Level Control System (continued) Page 16 American Metal Ware 87710E Coffee Urn...
- Page 16 May require new o-ring or silicone grease on top cap; upper or lower gauge glass washer; or, if chipped or cracked, new gauge glass. Also, make sure passageways through top cap and gauge base are clear.
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Page 17: Service/Troubleshooting Agitation
Installation and Service Instructions Safety Instructions Attention: Read carefully before attempting to install, operate or service your Alco solenoid valve. Retain for future reference. Read installation instructions - thoroughly. Failure to comply can result in valve failure or system damage or personal injury. Do not use solenoid valves on applications or fluid media not specifically cataloged without prior approval of Alco Engineering Department. - Page 18 Disassembly Disassemble in the same general order as indicated in exploded - view illustrations except as noted in the following steps: De-pressurize valve and disconnect electrical power source. To remove solenoid coil: Insert small screwdriver into gap in voltage nameplate. Slide screwdriver tip under coil retainer and snap off.
- Page 19 Page 20 American Metal Ware 87710E Coffee Urn...
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Page 20: Illustrated Parts Breakdown
American Metal Ware 87710E Coffee Urn Page 21... -
Page 21: Sprayover Pump Breakdown
List of Illustrated Parts (see page 21) Page 22 Dual Air Pump Electrode Assembly Timer Thermostat Cover Air Agitation Tubing Vent Tube Spray Arm Assembly Cover Handle Brew Basket Gauge Glass Assembly Faucet Shank with Wing Coupling Nut Electric Immersion Water Heater Thermometer Circuit Breaker Manual Agitation Switch... -
Page 22: Parts List
522005 Gauge Shield, Coffee, 15” 522046 Gauge Shield, Water, 14” 522035 Gauge Glass, Coffee, 15” 522048 Gauge Glass, Water, 14” 522026 Upper Gauge Glass Washer 522027 Lower Gauge Glass Washer 522030 Gauge Shield Aluminum Bracket 522094 Coffee/Water Faucet 522102 Silicone Seat Cup for Faucet... -
Page 23: Wiring Diagram - Controls
Page 24 American Metal Ware 87710E Coffee Urn... -
Page 24: Heater Wiring Diagram - 208V/240V
American Metal Ware 87710E Coffee Urn Page 25... -
Page 25: Heater Wiring Diagram - 480V
Page 26 American Metal Ware 87710E Coffe Urn... - Page 26 Grindmaster® Coffee Grinders and Brewers • Espressimo® Espresso Machines • Crathco® Hot Beverage Dispensers Crathco® Cold and Frozen Beverage Dispensers • American Metal Ware® Coffee and Tea Systems Tel (502) 425-4776 • Fax (502) 425-4664 • 1-800-695-4500 P.O. Box 35020 • Louisville, KY 40232 • USA...