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Curtis G4GEMS Service Manual

G4 gem single head brewer
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Download this manual See also: User Manual
Model
G4GEMS
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 Gem Single Head 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 Co., Inc. 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 unit is factory preset 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 back-flow 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 an 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
W
C
ilbur
urtis
• Water Bypass = On for LARGE & MEDIUM brew only
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Summary of Contents for Curtis G4GEMS

  • Page 1 WARNINGS – To help avoid personal injury Important Notes/Cautions – from the factory Sanitation Requirements This Curtis Generation 4 unit is factory preset and ready to go right from the box. Model Following are the factory settings for your G4 Coffee Brewing System: G4GEMS •...
  • Page 2 Your Curtis G4/Gold Cup Series is factory preset 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 Each time the warmer icon is pressed the tempera- ture increases to the next setting. 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. UNDO...
  • Page 4 Menu Tree This chart explains how to enter the program mode and menu selections available from the MAIN MENU.

  • Page 5: Menu Features

    Menu Features...
  • 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 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 universal serial bus (USB) 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 9 Brew Access Code...
  • Page 10 Illustrated Parts Main View ITEM NO. PART NO. DESCRIPTION WC-58117 COVER, TOP WRAP WC-8559* RELAY, SOLID STATE 40A W/INTEGRATED HEAT SINK WC-61396 COVER, CENTER FRONT WC-3417 BREW CONE,ASSY W/SPLASH POCKET BROWN STYLIZED GEM HOT COFFEE WC-1809 FAUCET, PS/HPS SERIES HOT WTR 1/2-20 UNF AP/ALP WC-39448 LABEL, BOTTOM WRAP WC-1501 FUSE, HOLDER ASSY w/5A FUSE WC-847* VALVE, INLET 2 GPM 120V-10W WC-883 VALVE, INLET 2 GPM 240V 10W WC-103 * SWITCH, TOGGLE NON-LIT DPST 25A 125/250VAC RESISTIVE WC-13463 HARNESS ASSY, COMPLETE G4TP2S10/G4TPC25S10 WC-14045-101 CURRENT SENSOR ASSY G4 WC-3528 LEG, 4” ADJUSTABLE 3/8-16 THRD STYLIZED WC-5428 DECK, WARMER W/A WC-37102* KIT, WARMER ELEMENT 100W 120V...
  • Page 11 Illustrated Parts Top Wrap ITEM NO. PART NO. DESCRIPTION WC-10001* UNIVERSAL POWER MODULE - G4 WC-37122* KIT, DUMP VALVE RIGHT 16A WC-854 VALVE, BREW DUMP RIGHT 240V 12W GEM12D/TP/TPC WC-2977-101* FITTING, SPRAYHEAD ULTEM WC-43089* GASKET, 1.00” OD x .625” ID x .030” THK RED SILICONE 40 SHORE WC-589-101 TRANSFORMER,120/230V-24V 4.8A W/LEADS & MOLEX CONNECTOR 19A WC-589-102 TRANSFORMER,240VAC- 24V 4.8VA W/LEADS & MOLEX CONNECTOR WC-442* SOLENOID, LOCK BREWCONE RIGHT 120VAC 20A WC-446 SOLENOID, LOCK BREW CONE RIGHT 220V THERMOPRO/GEMTS WC-844-101* VALVE, BYPASS 120V-14W NON ADJUSTABLE W/RESTRICTOR (WC-2945) 21A WC-844-102 VALVE, BY-PASS, 220V NON-ADJUSTABLE W/ RESTRICTOR (WC-2945) WC-10000* CONTROL MODULE (UCM), TOUCH SCREEN G4 WC-4212-02* NUT, 5/8-18 JAM PLASTIC ULTEM WC-29050* SPRAYHEAD ASSY, AFS-AMBER * RECOMMENDED PARTS TO STOCK...
  • Page 12 Illustrated Parts Heating Tank ITEM NO. PART NO. DESCRIPTION WC-5853-102 COVER, TOP HEATING TANK WC-43062* GASKET, TANK LID WC-37266* KIT, TANK OVERFLOW ELBOW FITTING WC-5527K* KIT, WATER LEVEL PROBE, O-RING & NUT WC-37357* KIT, STRAIGHT PLASTIC FITTING & BUSHING WC-37365* KIT, TANK INLET FITTING WC-62034 TANK, COMPLETE GEMSS DV W/ ULTEM FITINGS 30A WC-62035 TANK, COMPLETE GEMSS W/ULTEM FITTINGS WC-904-04* KIT,ELEMENT, HEATING 1.6KW120V W/ JAM NUT & SILICONE WASHERS WC-1438-101* SENSOR, TEMPERATURE TANK WC-522* THERMOSTAT, HI LIMIT HEATER DPST 277V-40A WC-5310* TUBE, 5/16 ID x 1/8W SILICONE WC-5350* TUBE, SILICONE Ø1/2” ID x Ø3/4” OD x 1/8” WALL WC-5231* COMPOUND, SILICONE 5 OZ TUBE GEM-3 1½ GALLON SATELLITE SERVER * RECOMMENDED PARTS TO STOCK...

  • Page 13: Electrical Schematic

    Electrical Schematic G4GEMS-10...
  • Page 14 Electrical Schematic G4GEMS-63 ELECTRICAL RATING TABLE Warmer Element # of Tank Element Voltage Amps Wa s Hertz # of Tank Model Conductor Phase Ra ng Ra ng Elements Wires 1100 110/220 2100 (1X) 100W/120V 1150V/120V 1100 120/240 2400 1800 110/220 12.7...
  • Page 15 Cleaning the Coffee Brewer Regular cleaning and preventive maintenance is essential in keeping your coffee brewer looking and working like new. 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.

  • Page 16: Rough-In Drawing

    Liquid Level Probe Cleaning intervals for the probe are to be determined by the user or the service tech, based on water conditions. The use of water filters or the type of water filter that is being used can impact the service interval. Intervals can be from one month to several years, however, replacing rather than cleaning the probe is preferable.
  • Page 18 Page Intentionally Left Blank...
  • Page 19 Page Intentionally Left Blank...
  • Page 20 The warranty covers original equipment at time of purchase only. Wilbur Curtis Co., Inc., assumes no responsibility for substitute replacement parts installed on Curtis equipment that have not been purchased from Wilbur Curtis Co., Inc. Wilbur Curtis Co., Inc. will not accept any responsibility if the following conditions are not met.