1
This appliance is designed for commercial use. Any servicing other than cleaning and maintenance should be performed by an autho-
rized Wilbur Curtis service center.
• Do NOT immerse the unit in water or any other liquid
• To reduce the risk of fire or electric shock, do NOT open top panel. No user serviceable parts inside. Repair should be done
only by authorized service personnel.
• Keep hands and other items away from hot parts of unit during operation.
• Never clean with scouring powders, bleach or harsh implements.
Conventions
WARNINGS – To help avoid personal injury
Important Notes/Cautions – from the factory
Sanitation Requirements
Your Curtis G3 System is Factory Pre-Set and Ready to Go… Right from the Carton.
Following are the Factory Settings for your interLock Coffee Brewing Systems:
• Brew Temperature = 200°F
• Water Bypass = On LARGE & MEDIUM brew only
• Brew Volume = Large set to vessel requirements.
• Energy Save Mode = Off
System Requirements:
• Water Source 20 – 90 PSI (Minimum Flow Rate of 1 GPM)
• Electrical: See attached schematic for standard model or visit www.wilburcurtis.com for your model.
SETUP STEPS
The unit should be level (left to right and front to back), located on a solid counter top. Connect a water line from the water filter to the
brewer. NOTE: Some type of water filtration device must be used to maintain a trouble-free operation. (In areas with extremely hard
water, we suggest that a sedimentary and taste & odor filter be installed.) This will prolong the life of your brewing system and enhance
coffee quality.
1. A 3/8”Flare x 3/8” Male pipe elbow is supplied with the brewer for water line connection. Use tubing sized sufficiently to provide a
minimum of 1.0 GPM.
2. Connect the unit to an appropriate electrical power circuit.
3. Turn on the toggle (STANDBY/ON) switch behind the unit. The heating tank will start to fill. When the water level in the tank rises to the
correct volume, the heating elements will energize automatically. With G3 Systems there is no danger of element burnout caused by
an empty tank.
4. The heating tank will require 20 to 30 minutes to reach operating temperature (200°F), indicated when READY TO BREW is displayed
on the LCD screen.
5. Prior to brewing, dispense 12 ounces of hot water through the hot water faucet.
6. Brew a cycle of at least 12 ounces, to purge the water lines of any air that may be trapped after filling.
NSF International requires the following water connection:
1. A quick disconnect or additional coiled tubing (at least 2x the depth of the unit) so that the machine can be moved
for cleaning underneath.
2. In some areas an approved backflow prevention device may be required between the brewer and the water supply.
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urtis
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Models
GEM TN
GEM-3N
GEM-5N
CAUTION: DO NOT
connect this brewer to hot
water. The inlet valve is
not rated for hot water.
CAUTION: Please use
this setup procedure
before attempting to use
this brewer. Failure to follow the
instructions can result in injury or the
voiding of the warranty.
WARNING
HOT LIQUID,
Scalding may occur.
Avoid splashing.
IMPORTANT: Equipment
to be installed to comply
with applicable federal,
state, or local plumbing/electrical
codes having jurisdiction.
Important Safeguards/Conventions
Service Manual – Gemini Narrow Twin Brewer
BREWING INSTRUCTIONS
1. Brewer should be ON (Confirm at rear toggle switch, then press the ON/OFF button). Ready-to-Brew should be on the display. If the
brewer is connected to an InterLock grinder, the grinder should be on. When Interlock connection is made, grind coffee at this time.
2. Place an empty Satellite under the brewcone and press the warmer switch to pre-heat the Satellite.
6. Press Brew button.
Brewing will begin
immediately.
5. Transfer filled
brewcone to
brewer.
3. Place a clean filter
into the brewcone.
4. Fill brewcone with
ground coffee.
