Wibur Curtis Company C1000AP User Manual

SERVICE MANUAL  
C1000AP & C1000APT  
DUAL AIRPOT BREWERS  
Wilbur Curtis Co., Inc.  
Montebello, California 90640 Telephone 323/837-2300 Fax 323/837-2406  
C1000AP & C1000APT Airpot Brewer  
INTRODUCTION  
This manual applies to Curtis Dual Station Airpot Brewer models C1000AP and C1000APT.  
Model C1000AP is designed for use with Curtis Airpots CAP-1 thru CAP-5, and other insulated dispensers  
up to 13¾" tall when opened for filling (see illustration, Step 3 in Coffee Brewing). Starting early in 1994,  
this brewer was increased in height to accommodate the larger "Deluxe" stainless steel brew cone. The  
taller brewer will also allow you to use insulated dispensers to 14¾" tall with the Universal (plastic) brew  
cone or the optional stainless steel brew cone.  
Model C1000APT is designed for use with the Curtis Airpot CAP-T1 with integral serving stand and gauge  
glass and other insulated dispensers to 18" tall in filling position. It can also be used with the larger Gour-  
met brew cone, but will then accept only insulated dispensers of 17" or less. You can use CAP-T1 and  
CAP-1 thru CAP-5 airpots in combination with all brew cones on the C1000APT.  
All Curtis airpots have a capacity of 2.2 liters and the brewers are preset at the factory. You can vary the  
amount of coffee brewed by adjusting the brew timer.  
Brewers with the Universal (plastic) brew cone or the optional stainless steel brew cone of the same size  
use CR-10 filters. The larger Deluxe brew cone uses GEM-6 filters. See Airpot Accessory Sheet (packed  
with your manual) to identify your brew cone and for information on other Curtis accessories.  
SETTING UP THE COFFEE BREWER  
1. Remove top cover of brewer. Remove lid from heating tank. Hand fill tank until water level is  
approximately two inches below probe tip.  
2. A 1/4" flare fitting is required to hook-up the water inlet. Connect water line to inlet valve fitting.  
Turn on water.  
3. With top cover removed, locate the thermostat (see illustration, page 5, #30), turn thermostat  
knob (#32) clockwise until it stops.  
4. Connect unit into appropriate power circuit. Flip POWER SWITCH (behind unit) ON. Water should  
flow into heating tank (and the heaters will come on). Check that water shuts off when it reaches  
the probe inside the tank.  
5. Turn on the ON/OFF SWITCH on the front. This powers the BREW TIMERS. Place an empty BREW  
CONE into the guide rails for the left brewer, and an empty airpot beneath it. Press the left BREW  
SWITCH to start the brew cycle. Repeat the test on the right brewer when the water is hot.  
6. If necessary, the brew volume for either station can be increased or decreased by adjusting the  
appropriate timer. Left and right brewers can be set for different volumes if you use two sizes of  
insulated dispensers (the quantity of ground coffee needed in the brew will change when a timer  
has been adjusted). TURN OFF POWER SWITCH ON BACK. Rotate the appropriate timer knob  
slightly to increase or decrease time and brew volume. Run a brew cycle to verify the brew volume.  
When you are satisfied with the adjustment, install the top cover and tighten the cover screws.  
The READY TO BREW light will come on when the water in the heating tank reaches brewing temperature.  
For best results, do not brew coffee until this light is on. It is normal for the light to go out as soon as brew-  
ing begins.  
IMPORTANT: The timer is adjusted at the factory to brew into a standard 2.2 liter airpot and has been  
set between 3 min. 20 sec. to 3 min. 40 sec.. The timer shall not be set longer than 4 min..  
[ 1 ]  
C1000AP & C1000APT Airpot Brewer  
COFFEE BREWING  
With a clean filter in place, pour ground coffee  
into the brew cone.  
1.  
You may need to experiment to determine the cor-  
rect quantity of ground coffee for your tastes, but a  
consistent measure of ground coffee is necessary  
for controlling the quality of flavor in your brewed  
coffee.  
Slide brew cone onto the guide rails as far in as it  
will go. Place an empty airpot beneath the cone.  
Notethatmostairpotsmustbeopenedandthesiphon  
assembly removed for filling.  
2.  
Preheating the airpot can increase the serving tem-  
perature by 4º-5º F.  
Make sure that both the ON/OFF switch and READY  
TO BREW light is ON. Pushing the brew switch will  
start the brew cycle.  
3.  
If necessary, the brew cycle may be canceled at any  
time by pressing the ON/OFF switch to OFF.  
CAUTION: TO AVOID SCALDING HAZARD FROM  
HOT LIQUID, do not remove the airpot or brew cone  
until the brew cycle is complete and the grounds  
[ 2 ]  
C1000AP & C1000APT Airpot Brewer  
CARE AND MAINTENANCE OF C1000 AP  
Preventive maintenance is essential in keeping your Curtis coffee brewer performing at it's peak. Regular  
cleaning will pay off with an appealing, high performance, coffee brewing machine.  
Preventive Maintenance  
1. Remove the sprayhead from brewer and clean it once a week; more often in heavy lime areas.  
2. The inside of the heating tank may, occasionally, require removing of lime build-up. The frequency  
is determined by local water conditions.  
Cleaning  
Using a daily routine of cleaning, the external parts of the C1000 AP should maintain it's new appearance  
and ensure that the flavor of the coffee is always good.  
1. Wipe off any spills, dust or debris that may fall on exterior surfaces.  
2. Slide out the brew cone and rinse.  
3. Clean sprayhead and dome around the sprayhead. Use a non-toxic cleaner.  
4. Clean the brew cone slide rails with a brush or damp cloth. Dry thoroughly.  
Stainless Steel Polish can be used to clean the outside surfaces of the C1000 AP coffee brewer. This is to  
prevent scratching of the stainless steel surfaces.  
CAUTION - Do not use cleansers, bleach liquids, powders or any other substance containing  
chlorine. These products will promote corrosion and will pit the stainless steel. USE OF THESE  
PRODUCTS WILL VOID YOUR WARRANTY.  
TROUBLESHOOTING  
These procedures apply specifically to model C1000AP-10 and C1000APT-10. They also apply to airpot  
brewers with other dash numbers which are based on the -10 schematic, primary units rated 220 volts,  
5100 watts, three wire plus ground. If the serial nameplate electrical rating differs, some measured volt-  
ages, currents, and resistances will be different than shown on the standard -10 schematic.  
PROBLEM: WATER DOES NOT FLOW INTO HEATING TANK.  
SOLUTION  
POSSIBLE CAUSE  
1. Water line turned off or  
water filter needs changing  
Open the line and make sure you are getting enough water to brewer.  
2. Water inlet valve coil burned out  
Turn machine off. Disconnect wires from water inlet coil terminals and connect a  
power cord to the terminals. Plug cord into a 120V outlet and verify if water flows  
when plugged in and stops when power is disconnected. If valve fails this test,  
replace valve.  
[ 3 ]  
C1000AP & C1000APT Airpot Brewer  
TROUBLE SHOOTING CONTINUED:  
PROBLEM: WATER DOES NOT FLOW INTO HEATING TANK.  
POSSIBLE CAUSE  
SOLUTION  
3. Grounded probe  
When the water level gets below the probe tip, water should automatically refill the tank.  
If not, pull wire off the probe terminal. Water should now start flowing into the tank. If not,  
check the water level control board (see step 4) or inlet valve (step 2).  
4. Defective water level control  
board  
Disconnect wire from probe terminal. With a voltmeter, check voltage at the water inlet  
coil terminals. This should read 110-120 volts. If no voltage is present, check liquid level  
control (L.L.C.) board. Make sure the L.L.C. board is supplied by 120V across terminals  
T2 & T3. The L.L.C. board is grounded to the chassis of the machine by contacting the  
board to the mounting bracket. Make sure board is grounded here. Check for loose con-  
nections at terminals. Replace board.  
PROBLEM: WATER HEATING TANK OVERFLOWING.  
SOLUTION  
POSSIBLE CAUSE  
1. Defective water inlet valve  
Turn power off and observe water level. If water continues to flow into the heating tank,  
clean or replace leaky valve.  
2. Probe limed-up  
Disconnect wire from probe terminal. Touch the body of the heating tank with the  
terminal at the end of this wire. If water stops, try cleaning the probe. Probe may have  
to be replaced.  
3. Non-grounded or loose terminal Liquid level control board must be securely grounded through the back of the board  
connections at liquid level  
control board  
and the mounting bracket. Check for loose connections at the terminals. Check for  
voltage across the inlet valve terminals. If there is 110 to 120 volts present at the inlet  
valve terminals when water level is touching the probe tip, replace the L.L.C. board.  
PROBLEM: WATER IN TANK DOES NOT REACH PROPER TEMPERATURE  
SOLUTION  
POSSIBLE CAUSE  
Check thermostat to make sure the shaft is rotated fully clockwise until it stops.  
1. Thermostat turned OFF  
(or not fully ON).  
Replace thermostat if contacts are open when shaft is fully clockwise and water temper-  
ature is less than 190º F. You will measure 120 volts (approximately) to ground from both  
thermostat terminals when it is ON and from only one terminal when it is OFF.  
2. Defective thermostat  
3. Defective Contactor  
Measure the voltage across the coil terminals of the contactor. If you read 110/120V, but  
the contacts remain open, the coil is burned out. Replace it.  
[ 4 ]  
C1000AP & C1000APT Airpot Brewer  
TROUBLE SHOOTING CONTINUED:  
PROBLEM: WATER IN TANK DOES NOT REACH PROPER TEMPERATURE  
POSSIBLE CAUSE  
SOLUTION  
In this coffee brewer there are two elements in parallel. Failure of either will cause very  
slow heating. Perform the following tests:  
4. Burned out heating element  
a. Clamp-on ammeter test: If both elements are good, you will measure about 21  
amps at 240 volts or 24 amps at 208 volts. Use heavy wire from the contactor to  
measure the current. If you measure only 10 to 12 amps, check the current to each  
element to identify defective unit.  
b. Ohmmeter or continuity test: Disconnect all power by unplugging unit, or de-en  
ergizing circuit breaker (switch on back of unit does not disconnect L2). Disconnect  
one terminal to measure each element. They should each have continuity or mea-  
sure about 20 ohms.  
PROBLEM: WATER BOILING, HEATING ELEMENTS DO NOT SHUT OFF.  
SOLUTION  
POSSIBLE CAUSE  
If ready to brew light does not come on, replace thermostat. You can sometimes operate  
temporarily by turning the thermostat shaft counterclockwise until brew light comes on  
and boiling stops.  
1. Defective thermostat  
2. Defective contactor  
If READY TO BREW light comes on, but water keeps boiling, contactor is stuck. Replace  
it. Under this condition, no voltage should be present at the contactor coil.  
PROBLEM: WATER NOT FLOWING FROM SPRAYHEAD.  
SOLUTION  
POSSIBLE CAUSE  
Check water level in tank (it should be filled up to the probe tip). If water does not flow  
into tank, review steps 1 thru 4, previous page.  
1. Water level is too low in heating  
tank.  
Check the continuity between terminal 4B & 5B. When the switch is pressed, there  
should be solid continuity between these two terminals. If not, replace the switch.  
2. Defective brew switch  
3. Defective brew valve  
Push the brew switch to start the timer. The light on this switch will indicate that the timer  
is on and it will energize the coil of the dump valve to open it. You should read 110/120V  
at the coil terminals. If this voltage is present but the valve does not open, the coil is  
burned out. Replace the coil or the valve.  
Check for lime buildup in the tank outlet fitting, sprayhead fitting, or the sprayhead. Clean  
as necessary. Also check for kinks or blockage in the flexible tubing.  
4. Clogged fittings or tubing  
[ 5 ]  
C1000AP & C1000APT Airpot Brewer  
ILLUSTRATED PARTS BREAKDOWN  
[ 6 ]  
C1000AP & C1000APT Airpot Brewer  
ILLUSTRATED PARTS BREAKDOWN  
43  
42  
[ 7 ]  
C1000AP & C1000APT Airpot Brewer  
PARTS LIST  
INDEX  
Nº  
PART  
Nº  
INDEX PART  
DESCRIPTION  
DESCRIPTION  
Nº  
25  
26  
29  
30  
31  
33  
35  
37  
41  
42  
43  
45  
46  
51  
53  
56  
57  
59  
62  
Nº  
1
2
3
4
5
6
7
8
10  
11  
11A  
13  
15  
WC-5421 COVER, TOP SS  
TUBE, 5/16 ID x 1/8W SILICONE  
T-STAT, CAPILLARY SPST 277V 22A  
O’RING, ½” I.D.  
WC-5310  
WC- 517  
WC-4320  
WC-2977  
WC- 826L  
WC-2401  
WC-5482  
WC-3502  
WC-3709  
WC- 102  
WC-3765L  
WC-37008  
WC-4314  
WC-5502  
WC 934-04  
WC-4381  
WC- 522  
WC-4382  
WC-6220  
WC-1809 FAUCET, PS/HPS SERIES HOT WTR  
WC-1806 SEAT CUP, SILICONE F0R WC-1809  
WC-3621 BREW CONE, UNIVERSAL 7.1" DIA.  
WC- 114R SWITCH, ROCKER 120V SPST 15A  
WC- 122 SWITCH, BREW 120V SPST 15A  
WC- 202 LIGHT, BREW RED LIT 120V 1/3W  
WC-6324 LABEL, SW PANEL LEXAN C1000AP  
WC-2936 SPRAYHEAD, RED (Ø.131)  
FITTING, SPRAYHEAD PLATED  
VALVE, INLET 1 GPM 120V 10W  
ELBOW, 3/8 NPT X 1/4 FLRE PLTD  
COVER, ASSY TOP WRAP BACK  
LEG, 8-32 STUD SCREW BUMPER  
KIT, VALVE REPAIR FOR WC-816,817  
SWITCH, TOGGLE NON-LIT SPST  
KIT, INLET VALVE REPAIR  
KIT, TANK LID ROUND  
INSERT, SILICONE GROMMETS  
PROBE, WATER LEVEL  
ELEMENT, HEATING 2.5KW 220V  
GUARD, SHOCK RESET THERM  
THERMOSTAT, HI-LIMIT HTR CNTRL  
SHOCK GUARD, HEATING ELEMENT  
TANK COMPLETE, C1000AP-10  
WC-37237 KIT, CONTACTOR RTRFT WC-400R  
WC-37265* KIT, CONTACTOR RTRFT WC-400R  
WC-6221 GRID, DRIP TRAY SS  
WC-5847 COVER, FRONT C1000AP  
15A WC-5848 COVER, FRONT C1000APT  
20  
21  
22  
23  
24  
WC-4380 GUARD, SHOCK/LEVEL CONTROL  
WC- 608 LEVEL CONTROL, WATER 120V  
WC- 604 TIMER, BREW 120V 1-8MIN.  
WC- 817 VALVE, DUMP RIGHT 120V 12W  
WC- 899 VALVE, DUMP LEFT 120V 12W  
* FOR UNITS W/CONTACTOR ON SPLASH PANEL  
Wilbur Curtis Company, Inc.  
[ 8 ]  
C1000AP & C1000APT Airpot Brewer  
[ 9 ]  
Product Warranty Information  
The Wilbur Curtis Company certifies that its products are free from defects in material and workmanship under normal use. The fol-  
lowing 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.  
1 Year, Labor, from Original Date of Purchase on all electrical components, fittings and tubing.  
Additionally, the Wilbur Curtis Company warrants its Grinding Burrs for Forty (40) months from date of purchase or 40,000 pounds  
of coffee, whichever comes first. Stainless Steel components are warranted for two (2) years from date of purchase against leaking  
or pitting and replacement parts are warranted for ninety (90) days from date of purchase or for the remainder of the limited warranty  
period of the equipment in which the component is installed.  
All in-warranty service calls must have prior authorization. For Authorization, call the Technical Support Department at 1-800-995-  
0417. Effective date of this policy is April 1, 2003.  
CONDITIONS & EXCEPTIONS  
The warranty covers original equipment at time of purchase only. The Wilbur Curtis Company, Inc., assumes no responsibility for  
substitute replacement parts installed on Curtis equipment that have not been purchased from the  
Wilbur Curtis Company, Inc. The Wilbur Curtis Company will not accept any responsibility if the following conditions are not met. The  
warranty does not cover and is void under the following circumstances:  
1) Improper operation of equipment: The equipment must be used for its designed and intended purpose and function.  
2) Improper installation of equipment: This equipment must be installed by a professional technician and must comply with  
all local electrical, mechanical and plumbing codes.  
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 responsibility of the equipment owner. The owner is responsible for proper cleaning and regular  
maintenance of this equipment.  
6) Damaged in transit: Equipment damaged in transit is the responsibility of the freight company and a claim should be  
made with the carrier.  
7) Abuse or neglect (including failure to periodically clean or remove lime accumulations): The manufacturer is not  
responsible for variation in equipment operation due to excessive lime or local water conditions. The equipment must be  
maintained according to the manufacturer’s recommendations.  
8) Replacement of items subject to normal use and wear: This shall include, but is not limited to, light bulbs, shear disks,  
“0” rings, gaskets, silicone tube, canister assemblies, whipper chambers and plates, mixing bowls, agitation assemblies  
and whipper propellers.  
9) Repairs and/or Replacements are subject to our decision that the workmanship or parts were faulty and the defects  
showed up under normal use. All labor shall be performed during regular working hours. Overtime charges are the  
responsibility of the owner. Charges incurred by delays, waiting time, or operating restrictions that hinder the service techni-  
cian’s ability to perform service is the responsibility of the owner of the equipment. This includes institutional and correc-  
tional facilities. The Wilbur Curtis Company will allow up to 100 miles, round trip, per in-warranty service call.  
RETURN MERCHANDISE AUTHORIZATION: All claims under this warranty must be submitted to the Wilbur Curtis Company  
Technical Support Department prior to performing any repair work or return of this equipment to the factory. All returned equip-  
ment must be repackaged properly in the original carton. No units will be accepted if they are damaged in transit due to improper  
packaging. NO UNITS OR PARTS WILL BE ACCEPTED 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.  
WILBUR CURTIS CO., INC.  
6913 Acco St., Montebello, CA 90640-5403 USA  
Phone: 800/421-6150  
Fax: 323-837-2410  
Technical Support Phone: 800/995-0417 (M-F 5:30A - 4:00P PST)  
Printed in U.S.A. 8/07 F-1996 rev A  
[ 10 ]  

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