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Curtis G4GEMT Service Manual

G4 gemini twin coffee brewer
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Download this manual See also: User Manual
Model
G4GEMT
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.
IMPORTANT: Equipment
to be installed to comply
with applicable govern-
mental plumbing/electrical codes
having jurisdiction.
CAUTION: DO NOT
connect this brewer to hot
water. The inlet valve is
not rated for hot water.
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
Service Manual – G4 Gemini Twin Coffee 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
This Curtis Generation 4 System is factory pre-set and ready to go right from the box.
Following are the factory settings for your G4 Coffee Brewing System:
• Brew Temperature = 200°F
• Brew Volume = Set to Vessel Requirement.
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
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. Air must be
purged from the cartridge prior to connection to equipment. 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.
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). Where applicable, turn on the universal control module (UCM). When the unit
reaches operating temperature, it will display "READY TO BREW".
For the latest specifications and information go to www.wilburcurtis.com
Technical Support: 1-800-995-0417 M-F 5:30
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• Water Bypass = On for LARGE & MEDIUM Brew Only
Email: techsupport@wilburcurtis.com
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  • Page 1 Important Notes/Cautions – from the factory Sanitation Requirements Model This Curtis Generation 4 System is factory pre-set and ready to go right from the box. G4GEMT Following are the factory settings for your G4 Coffee Brewing System: • Brew Temperature = 200°F •...
  • Page 2 Your Curtis G4/Gold Cup Series is factory pre-set for optimum performance. After connection to water and power; turn on the brewer at the rear toggle switch. You will hear a beep and the status lights will come on for a moment.
  • Page 3 STATUS LIGHTS WARMERS BREW BUTTONS CURTIS LOGO TO ENTER PROGRAMMING Tap Curtis logo 5 times to bring up the ACCESS CODE screen. CONTROL SYMBOLS All of these symbols may not be visible at one time. RETURN TO HOME...
  • Page 4 Menu Tree This chart explains how to enter the program mode and menu selections available from the MAIN MENU. Tap “Curtis” logo 5 times to enter Programming Mode When installing new control board, default is Gemini Twin - Three Batch Applies to Gemini models only Applies to Gold Cup/Seraphim models only...

  • Page 5: Menu Features

    Menu Features This applies to Gemini units only. This applies to Gemini-IF units only. <MED> during brewing This applies to Gemini and Gemini-IF units only. This function is <120 Min on GEMTIF/GEMSIF> No change Auto test Runs diagnostic tests Display brew time models: models: Displays various screen saver images...
  • Page 6 Menu Features 5 Sec. - 15 Min. 5 Min. - 25 Sec. 3 Min. - 32 Sec. 1 Min. - 52 Sec. 10 Sec. On/10 Sec. Off 20 Sec. On/20 Sec. Off 30 Sec. On/30 Sec. Off 40 Sec. On/40 Sec. Off 50 Sec.

  • Page 7: System Fault Messages

    System Fault Messages Maintenance required Low water flow Fill run error/overflow minutes on the intial tank fill or 120 seconds on large brewers and 30 seconds on CGC brewer in Open sensor Excess temperature Break in the UPM-UCM communications circuit. UPM-UCM communication * This error is disabled in the CGC &...
  • Page 8 Brew Access Code Tap “Curtis” logo 5 times to enter Programming Mode The PASSWORDS screen will...
  • Page 9 USB – Easy Programming There are two methods that can be used to change the default settings on G4 brewers. They can be programmed at the brewer by the touch screen universal control module (UCM) or the settings can be changed using the USB (universal serial bus) data port on the side of the brewer. Using the USB connection and a flash memory data storage device will easily reprogram the settings simply by copying data. The flash drive can upload or download the entire setting from one G4 brewer, into another G4 brewer. This eliminates the need to walk through the usual steps in reprogramming that would be required when you use the touch screen to make a change. This is an advantage for a service technician when standardizing the program settings on multiple G4 brewers.
  • Page 10 Illustrated Parts Main View...

  • Page 11: Illustrated Parts

    Illustrated Parts Top Wrap ITEM NO. PART NO. DESCRIPTION WC-5421 COVER, TOP STAINLESS GEMTIF WC-5527K* KIT, PROBE WATER LEVEL O-RING & NUT WC-37008 KIT, TANK LID ROUND WC-43067* O-RING, 4-1/2 I.D. x Ø.285 C.S. SILICONE WC-62033 TANK COMPLETE, GEMTS WITH ULTEM FITTINGS WC-934-04* KIT, HEATING ELEMENT 2.5KW 220V W/JAM NUT & SILICONE WASHERS WC-4382* GUARD, SHOCK - DOUBLE HEATING ELEMENTS WC-522* THERMOSTAT, HI LIMIT HEATER DPST 277V-40A WC-43055 GUARD, SHOCK RESET THERMOSTAT WC-1438-101* SENSOR, TEMPERATURE TANK WC-29050* SPRAYHEAD ASSY, AFS-AMBER WC-8559* RELAY, SOLID STATE 40A w/INTEGRATED HEATSINK WC-14045-101 CURRENT SENSOR ASSY G4 WC-39462 LABEL, BOTTOM PANEL GEMTS WC-1809 FAUCET, PS/HSP SERIES HOT WATER 1/2-20 UNF GEM-6* FILTER, 500PK GEM-12/230A WC-3417 BREW CONE,ASSY W/SPLASH POCKET BRWN STYLIZED GEMIN HOT COFFEE...

  • Page 12: Parts List

    Parts List ITEM NO. PART NO. DESCRIPTION 27A WC-883 VALVE, INLET 2 GPM 240V 10W WC-589-101 TRANSFORMER, 120/230VAC - 24VAC 4.8VA w/LEADS & TERMINALS 28A WC-589-102 TRANSFORMER,240VAC- 24V 4.8VA W/LEADS & MOLEX CONNECTOR WC-13450 HARNESS ASSY, COMPLETE TP2T10G4/GEMTS10G4/GEMTIF10G4 29A WC-13450-101 HARNESS ASSY COMPLETE G4TP2T G4TPC2T/G4GEMT/G4TP1T-30’S WC-1501 FUSE, HOLDER ASSY w/5A FUSE WC-102 * SWITCH, TOGGLE SPST 15A 125Vac RESISTIVE 31A WC-103 SWITCH, TOGGLE NON-LIT DPST 25A 125/250VAC RESISTIVE WC-37121 KIT, DUMP VALVE LEFT 32A WC-853 VALVE, BREW DUMP LEFT 240V 12W GEM12D/TP/TPC WC-442 * SOLENOID, LOCK BREW CONE RIGHT 120VAC 33A WC-446 SOLENOID, LOCK BREW CONE RIGHT 220V THERMOPRO/GEMTS WC-2977-101K KIT, SPRAYHEAD FITTING, GASKET & JAM NUT WC-37122*...

  • Page 13: Electrical Schematic

    Electrical Schematic...
  • Page 14 Cleaning the Gemini Regular cleaning and preventive maintenance is essential in keeping your coffee brewer looking and working like new. To clean the coffee brewer and components, prepare a mild solution of dish washing detergent and warm water. CAUTION – Do not use cleaning liquids, compounds or powders containing chlorine (bleach) or corrosives. These products promote corrosion and will pit the stainless steel.

  • Page 15: Illustrated Parts List

    5. Clean all parts. Thoroughly rinse with clear warm water. 6. Dry and assemble the handle/bonnet parts. Hand-tighten the assembly onto the faucet. 7. Remove the gauge glass tube by unscrewing the gauge glass cap. 8. Clean the gauge glass tube and the two washers with a gauge brush and detergent solution. Rinse with clear water.
  • Page 16 UNITS OR PARTS WILL BE AC- CEPTED WITHOUT A RETURN MERCHANDISE AUTHORIZATION (RMA). RMA NUMBER MUST BE MARKED ON THE CARTON OR SHIPPING LABEL. All in-warranty service calls must be performed by an authorized service agent. Call the Wilbur Curtis Technical Support Department to find an agent near you.

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