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C

Service Manual – GEM-120A Satellite Brewer

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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

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.

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.

Symbols:

WARNINGS – To help avoid personal injury

Important Notes/Cautions – from the factory

Sanitation Requirements

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.

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.

Important Safeguards/Symbols

For the latest specifications and information go to www.wilburcurtis.com

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.

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.

Model:

 

● GEM-120A

CAUTION: 

DO NOT 

connect the unit to 

hot water supply. 

The inlet valve is not rated for 

hot water.

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: 

Equipment must be 

installed to comply 

with applicable federal, state, 

and local plumbing/electrical 

codes.

Summary of Contents for GEM-120A

Page 1: ...ur 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 INSTALLATION This Curtis unit is pre set and ready to go from the ...

Page 2: ...s prepare a mild solution of detergent and warm water CAUTION Do not use cleansers bleach liquids powders or any other substance containing chlorine These products promote corrosion and will pit the stainless steel USE OF THESE PRODUCTS WILL VOID THE WARRANTY DAILY CLEANING 1 Wipe exterior surfaces with a damp cloth removing spills and debris 2 Slide the brewcone out and clean it Wipe the sprayhea...

Page 3: ...t cup Replace if the seat cup damaged 3 Clean the coffee level gauge glass a Remove the gauge glass cap unscrewing it from the top of the shield b Carefully pull out the gauge glass Brush out the inside of the glass with a detergent solution Rinse the sight glass tube of all detergent residue c Inspect the gasket seals at the top and bottom of the gauge glass Clean these gaskets d Assemble the gau...

Page 4: ...ned out 3 Grounded probe 4 Defective or burned out water level control board PROBLEM WATER IN TANK DOES NOT GET HOT OR WATER TEMPERATURE TOO LOW POSSIBLE CAUSE SOLUTION 8 Thermostat is off Check the thermostat to make sure it is in the ON position Turn the thermostat stem clockwise until it stops 9 Burned out heating element Check element for continuity and or check with clamp ammeter This should ...

Page 5: ...d 110 to 120 volts across terminals 8 and 9 of the timer The RED wire on terminal 8 supplies power to open the dump valve If no voltage is present replace the timer If the timer works when the brew switch is pressed then check the dump valve using a voltmeter on the terminals If it shows 110 to 120 volts but no water flows through the valve clean out the valve or replace the coil 11 Water level is...

Page 6: ... 6 GEMINI 120A Parts List 8 27 28 B 25 6 3 16 14 21 1 4 20 24 5 7 13 9 10 11 12 2 15 15 18 17 23 26 29 30 31 19 21 22 ...

Page 7: ...SY 100W 120V WITH SILICONE BOOTS SWITCH TOGGLE SPST 25A 125 250 VAC RESISTIVE LEG SCREW BUMPER 3 8 16 STD BREW CONE ASSY W SPLASH POCKET NON METAL DELUXE OPTIONAL COVER FRONT GEM 120A 120P 230A 200R 300IL 600ILD COVER TOP ALPGT D500GT D60GT TLP TCTS CBS GEMSS PLUG TANK DRAIN ULTEM 1000F KIT VALVE REPAIR USE ON WC 826 WC 826L WC 847 WASHER 35 GPM 5 USE ON WC 825 LID ASSEMBLY TANK TANK COMPLETE GEM ...

Page 8: ...ORD 6 18 3 BLK SWITCH ROCKER 120V RED SATELLITE SERVER 1 GAL LID SATELLITE PLASTIC GEM3 GAUGE GLASS ASSEMBLY 8 C SHIELD 8 INCH GAUGE GLASS GAUGE GLASS 8 INCH BRACKET GAUGE GLASS FORMED SHANK FAUCET D T CHROME FAUCET S NONLOCKING FAUCET ESP BLACK NONLOCKING OPTIONAL KIT FAUCET S SERIES SATELLITE STAND LEG SCREW BUMPER 3 8 16 STD KIT WARMER ELEMENT 100W 120VAC ILLUSTRATED PARTS LIST GEM 3 5 8 11 13 ...

Page 9: ... 9 ELECTRICAL DIAGRAM GEM120A 10 ...

Page 10: ... 10 ELECTRICAL DIAGRAM GEM120A 63 ...

Page 11: ... 11 ELECTRICAL DIAGRAM GEM 5 8 ROUGH IN DRAWING GEM 120A ROUGH IN DRAWING GEM 3 GEM 5 ...

Page 12: ...es 3 Improper voltage Equipment must be installed at the voltage stated on the serial plate supplied with this equipment 4 Improper water supply This includes but is not limited to excessive or low water pressure and inadequate or fluctuating water flow rate 5 Adjustments and cleaning The resetting of safety thermostats and circuit breakers programming and temperature adjustments are the responsib...

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