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Grindmaster 87710 - page 1
1 104 Form # AM-307-02 American Met al W are ® Inst allation, Operation & Service Manual For High S peed Brewing Urn (T op Line) Model 87710 Dual W all Insulated Electric S team S pecial Features After completing inst allation and set-up, the equipment owner should keep this manual for future reference. © Grindmaster Corporation™, 1995 PRIN ...
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Grindmaster 87710 - page 2
American Met al W are 87710E Coffee Urn Page 3 General Description This urn is an automatic, push button operated, volume brewing unit. It consists of a non- pressure vented water compartment of large cap acity into which two stainless steel cof fee liners are inserted. Also installed within this water compartment are electric immersion heaters the ...
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Grindmaster 87710 - page 3
Page 4 American Met al W are 87710E Coffee Urn ...
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Grindmaster 87710 - page 4
Inst allation 1. 2. 3. 4. IMPORT ANT TO ALLOW 6” CLEAR SP ACE FOR ACCESS T O CONTROL BOX. Urn should be level, both front to back and left to right. CONNECT W A TER LINE. 3/8” NPT water inlet located at left end and provide shutof f valve and union in supply line near urn. 140 O F . hot water must be used, 30PSI mini- mum - 70PSI maximum. We st ...
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Grindmaster 87710 - page 5
Page 6 American Met al W are 87710E Coffee Urn S pray-Over Time - V olume - Rate T imer 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: T imer Adjustment T urn adjustment knob clockwise to decrease time, counterclockwise to increas ...
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Grindmaster 87710 - page 6
How T o Brew In An Automatic Urn 1. 2. 3. 4. 5. 6. Explanation Of Brewing Cycle 1. 2. 3. 4. 5. 6. NOTE: Some urns may be equipped with an optional adjustable byp ass valve on the spray arm. Adjustment of this valve will allow some spray water to bypass the brewing basket for additional control of the water/coffee brewing formula and the extraction ...
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Grindmaster 87710 - page 7
Page 8 American Met al W are 87710E Coffee Urn Thermost at 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 of f and hold at the LO end of the BREW zone on the therm ...
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Grindmaster 87710 - page 8
American Met al W are 87710E Coffee Urn Page 9 Care and Cleaning of Coffee Urn 1. 2. 3. 4. 5. 6. 7. 8. NOTE : On automatic urns, use brew start and stop switches, or the rinse switch, to spray scalding hot water into liner for cleaning and rinsing. On pourover urns, draw hot water directly from urn. Make sure urn water tank is kept near full, and h ...
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Grindmaster 87710 - page 9
Solid S t ate Coffee Agit ation System Coffee agit ation is accomplished with low pressure air , bubbling up through the coffee in liner . Air enters at the top coffee gauge elbow fittings and forces cof fee down out of sight in gauge glasses during the agitation period. Air continues through into the liner connection elbow , and bubbles up from th ...
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Grindmaster 87710 - page 10
American Met al W are 87710E Coffee Urn Page 1 1 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. Possible Cause 1. Thermost at out of calibration. 2. Thermost at is inoperative. Fluid has leaked out of diastat assembly of thermost at. 3. Contractor sticking in closed p ...
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Grindmaster 87710 - page 11
Dual Level Control Auto Refill And Low W ater Cutoff System 1. Dual Level Control: What it does: A. B. C. 2. Description and Operation of the Dual Level Control System: A. AUTO REFILL of the water comp artment 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 w ...
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Grindmaster 87710 - page 12
Action 1) Both “HI” and “XL” electrode circuits open. Dual Level Control turns power on to fill valve and keeps power of f to thermostat. 2) “XL” electrode circuit closes. Power to thermostat turned on. Power to fill valve remains on. 3) “HI” electrode circuit closes. Dual Level Control turns power off to fill valve and con- tinues ...
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Grindmaster 87710 - page 13
Page 14 American Met al W are 87710E Coffee Urn Problem Possible Cause Service Check Remedy Disassemble and clean out. May require new plunger assembly . Caution is advised to avoid damage to valve. See valve instruction sheet. On valves without integral strainer: Install so that port marked “IN” is connected to outside fresh water supply . On ...
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Grindmaster 87710 - page 14
American Met al W are 87710E Coffee Urn Page 15 Problem Possible Cause Service Check Remedy Remove and clean micromesh screen filter located in water strainer . If voltage missing or incorrect, check wiring for looseness, breaks, and proper connections. Clean out and/or replace plunger assembly or entire valve. May require new coil. Caution is advi ...
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Grindmaster 87710 - page 15
Page 16 American Met al W are 87710E Coffee Urn Problem Possible Cause Service Check Remedy Make sure knob is turned fully clockwise. Recalibrate thermostat. If no reme- dy , or thermostat does not cycle, replace. If correct voltage, replace coil or entire device. If not correct voltage, check for loose wires, improper wiring or other cause. Clean ...
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Grindmaster 87710 - page 16
American Met al W are 87710E Coffee Urn Page 17 Service/T roubleshooting Solid S t ate Air Agit ation A vibrator air pump is located in the control box. This pump supplies the air to the cof fee liners. It is turned on directly by pushing the manual agitation switch, and automatically by the brew timer or solid state relay in series with the brew t ...
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Grindmaster 87710 - page 17
Page 18 American Met al W are 87710E Coffee Urn Safety Instructions Attention: Read carefully before attempting to install, operate or service your Alco solenoid valve. Retain for future reference. 1. 2. 3. 4. Read installation instructions - thoroughly . Failure to comply can result in valve failure or system damage or personal injury . Do not use ...
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Grindmaster 87710 - page 18
American Met al W are 87710E Coffee Urn Page 19 Disassembly Disassemble in the same general order as indicated in exploded - view illustrations except as noted in the following steps: 1. 2. 3. Assembly 1. 2. 3. T roubleshooting 1. 2. De-pressurize valve and disconnect electrical power source. T o remove solenoid coil: Insert small screwdriver into ...
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Grindmaster 87710 - page 19
Page 20 American Met al W are 87710E Coffee Urn 093-01 1 ...
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Grindmaster 87710 - page 20
American Met al W are 87710E Coffee Urn Page 21 ...
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Grindmaster 87710 - page 21
Page 22 American Met al W are 87710E Coffee Urn List of Illustrated Part s (see page 21) 1. Dual Air Pump 2. Electrode Assembly 3. T imer 4. Thermostat 5. Cover 6. Air Agitation T ubing 7. V ent T ube 8. S pray Arm Assembly 9. Cover Handle 10. Brew Basket 1 1. Gauge Glass Assembly 12. Faucet 13. Leg 14. Shank with Wing Coupling Nut 15. Electric Imm ...
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Grindmaster 87710 - page 22
American Met al W are 87710E Coffee Urn Page 23 87710E Part s 522005 Gauge Shield, Coffee, 15” 522046 Gauge Shield, W ater , 14” 522035 Gauge Glass, Coffee, 15” 522048 Gauge Glass, W ater , 14” 522026 Upper Gauge Glass W asher 522027 Lower Gauge Glass W asher 522030 Gauge Shield Aluminum Bracket 522094 Coffee/W ater Faucet 522102 Silicone S ...
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Grindmaster 87710 - page 23
Page 24 American Met al W are 87710E Coffee Urn ...
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Grindmaster 87710 - page 24
American Met al W are 87710E Coffee Urn Page 25 ...
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Grindmaster 87710 - page 25
Page 26 American Met al W are 87710E Coffe Urn ...
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Grindmaster 87710 - 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 www.grindmaster.com • email: ...
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