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Model:
● GEM-120A
CAUTION:
Equipment must be
installed to comply
with applicable federal, state,
and local plumbing/electrical
codes.
CAUTION: Follow
this setup procedure
before attempting
to use this unit. Failure to
follow these instructions can
result in injury and/or void of
warranty.
CAUTION: DO NOT
connect the unit to
hot water supply.
The inlet valve is not rated for
hot water.
C
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
W
Service Manual – GEM-120A Satellite Brewer
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 fire 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
INSTALLATION
This Curtis unit is pre-set and ready to go from the factory.
Factory settings for this unit are:
• Brew Temperature = 200°F
• Brew Volume = Set to vessel requirements (1 Gallon).
System Requirements:
• Water Supply 20 – 90 PSI (minimum flow rate of 1 gpm)
• Electrical: See electrical schematic.
SETUP STEPS
1. The unit should be level (left to right - front to back), on a secure surface.
2. Connect the water line to the water inlet fitting on the rear of the unit. Water volume flow to the machine should be
consistent. Use tubing sized sufficiently to provide a minimum flow rate of one gallon per minute.
NOTE: A water filtration system must be used to help maintain trouble-free operation. In areas with extremely hard
water, we highly recommend the use of a Curtis approved water filter. For our full line of filters, please log on to
www.wilburcurtis.com. A water filtration system will greatly prolong the life of the unit and enhance the quality and
taste of the product.
NSF International requires the following water connection:
1. A quick disconnect or additional coiled tubing (at least 2x the depth of the unit) is required so that the unit
can be moved for cleaning.
2. This unit must be installed with adequate backflow protection to comply with applicable federal, state and
local codes.
3. Water pipe connections and fixtures directly connected to a portable water supply shall be sized, installed
and maintained in accordance with federal, state, and local codes.
3. Connect the unit to electrical outlet with appropriate amperage rating (see serial tag on machine).
4. Once power has been supplied to the unit, flip the toggle switch to the 'ON' position (located on the rear of the unit), the
water tank will begin to fill. When the water level in the tank reaches the probe, the heating element(s) will turn on.
5. Water in the heating tank will require approximately a half hour before reaching operating temperature (factory setting
of 200°F). When the water temperature in the heating tank is ready, the green "BREW WHEN LIT" light will come on.
For the latest specifications and information go to www.wilburcurtis.com
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urtis
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Summary of Contents for Curtiss GEM-120A

  • Page 1 Service Manual – GEM-120A Satellite Brewer 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 •...
  • Page 2: Daily Cleaning

    BREWING 1. Brewer should be ON (Confirm at rear toggle switch, then press the ON/OFF button). The Brew When Lit light should be on. 2. Place an empty Satellite under the brewcone and press the warmer switch to pre-heat the Satellite. 3.
  • Page 3 Cleaning the Satellite Server 1. Empty any remaining coffee from the Satellite server. 2. Fill the liner with a mild detergent solution and let it stand for 10 to 15 minutes. 3. After about 15 minutes take a sponge brush and scrub out the stainless steel liner. 4.
  • Page 4: Troubleshooting

    GEMINI 120A TROUBLE SHOOTING PROBLEM: WATER DOES NOT FLOW INTO HEATING TANK POSSIBLE CAUSE SOLUTION 1. Water line turned off or Open the water line and make sure water flows to the brewer. filter clogged up. 2. Water inlet valve coil Turn off brewer. Disconnect wires from water inlet coil terminals and burned out. connect a power cord to the terminals. Plug cord into a 110v outlet and verify that water flow when plugged in and stops when cord is disconnected. If valve does not respond to this test, replace the valve.
  • Page 5 GEMINI 120A PROBLEM: WATER IN TANK DOES NOT GET HOT OR WATER TEMPERATURE TOO LOW SOLUTION POSSIBLE CAUSE 10. Defective thermostat. Thermostat may be cutting off before the water temperature reaches operating temperature. Do not try to reset the thermostat. Replace it. PROBLEM: WATER NOT FLOWING FROM SPRAYHEAD. SOLUTION POSSIBLE CAUSE 11. Water level is too low Check water level in tank. If water is not flowing into the tank, re- in heating tank. view steps 1 thru 4, previous page.
  • Page 6 GEMINI 120A Parts List - 6 -...
  • Page 7 GEMINI 120A Parts List ITEM № PART № DESCRIPTION WC-3621-101 BREW CONE, UNIVERSAL 7.38"D. WC- 603-101K-GEM KIT, RETROFIT TIMER GEM120A 120V WC-608-101K KIT, LIQUID LEVEL CONTROL WC-2936 SPRAYHEAD, RED (.131 DIA) WC-5502-01 KIT, PROBE, ASSY WATER LEVEL W/HEX FITTING, O-RING & NUT WC-3920-01 LABEL, SWITCH PANEL GEM120A CURTIS (NEWER UNITS) 6A WC-3920T LABEL, SW PANEL GEM-120A CURTIS (OLDER UNITS) WC- 904-04 KIT,ELEMENT, HEATING 1.6KW120V W/JAM NUT & SILICONE WASHERS 7A WC- 906-04 KIT, ELEMENT, HEATING 2KW 220V W/ JAM NUT & SILICONE WASHERS WC-1200 POWER CORD, 6' 14/3 BLK SJTO WC- 826L VALVE, INLET 1 GPM 120V 10W ALP/AP/TLP YELLOW BODY WC- 504 THERMOSTAT, CAPILLARY SPST 250V 25A GEM WC-3763 KIT, VALVE REPAIR FOR WC-866, WC-889, WC-816, WC-817, WC-818 WC- 817 VALVE, DELTROL DUMP RIGHT 120V. WC-1809 FAUCET, HOT WATER W/JAM NUT WC- 207 LIGHT, BREW 115V GREEN WC- 203 LIGHT, BREW 220V...
  • Page 8 ILLUSTRATED PARTS LIST GEM-3, 5, 8 INDEX PART Nº Nº DESCRIPTION GEM-5 SATELLITE WARMER STAND,115V WC-1201 POWER CORD 6’ 18/3 BLK WC- 114R SWITCH, ROCKER 120V RED GEM 3 SATELLITE SERVER 1½ GAL WC-5622 LID, SATELLITE PLASTIC GEM3 WC-2102 GAUGE GLASS ASSEMBLY, 8” C WC-2010C SHIELD, 8 INCH GAUGE GLASS WC-2025...
  • Page 9 ELECTRICAL DIAGRAM – GEM120A-10 - 9 -...
  • Page 10 ELECTRICAL DIAGRAM – GEM120A-63 - 10 -...
  • Page 11 ELECTRICAL DIAGRAM GEM 5 & 8 ROUGH-IN DRAWING GEM-120A ROUGH-IN DRAWING GEM-3 & GEM-5 - 11 -...
  • Page 12 Product Warranty Information The Wilbur Curtis Company certifies 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, fittings and tubing.