SERVICE MANUAL
C1000AP & C1000APT
DUAL AIRPOT BREWERS
Wilbur Curtis Co., Inc.
Montebello, California 90640  Telephone 323/837-2300  Fax 323/837-2406
INDEX
Subject
Page
Shipping List . . . . . . . . . . . . . . . . . . . . . . . . . . . Inside Front Cover
Dimensions . . . . . . . . . . . . . . . . . . . . . . . . . . . . Inside Front Cover
Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
Setting Up . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
Brewing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
Care & Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
Trouble Shooting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3, 4, 5
Parts Breakdown . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6, 7
Parts List . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
8
Wiring Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
Warranty . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
CARTON CONTENTS
QTY
ITEM
1
C1000 AP or APT COFFEE BREWER
2
BREW CONE, UNIVERSAL
1
SERVICE MANUAL
25
FILTER PAPER
1
FITTING, 1/4 x 3/8 FLARE ELBOW
C1000AP & APT ROUGH-IN DRAWING
C1000AP
C1000APT
C1000AP
C1000APT
C1000AP
C1000AP
C1000APT
C1000APT
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 Gourmet 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 brewing 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
1.
With a clean filter in place, pour ground coffee
into the brew cone.
You may need to experiment to determine the correct 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.
2.
Slide brew cone onto the guide rails as far in as it
will go. Place an empty airpot beneath the cone.
Note that most airpots must be opened and the siphon
assembly removed for filling.
Preheating the airpot can increase the serving temperature by 4º-5º F.
3.
Make sure that both the ON/OFF switch and READY
TO BREW light is ON. Pushing the brew switch will
start the brew cycle.
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 voltages, currents, and resistances will be different than shown on the standard -10 schematic.
PROBLEM: WATER DOES NOT FLOW INTO HEATING TANK.
POSSIBLE CAUSE
1. Water line turned off or
water filter needs changing
2. Water inlet valve coil burned out
SOLUTION
Open the line and make sure you are getting enough water to brewer.
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 connections 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
connections at liquid level
control board
Liquid level control board must be securely grounded through the back of the 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
POSSIBLE CAUSE
1. Thermostat turned OFF
(or not fully ON).
2. Defective thermostat
3. Defective Contactor
SOLUTION
Check thermostat to make sure the shaft is rotated fully clockwise until it stops.
Replace thermostat if contacts are open when shaft is fully clockwise and water temperature 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.
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
SOLUTION
POSSIBLE CAUSE
4. Burned out heating element
In this coffee brewer there are two elements in parallel. Failure of either will cause very
slow heating. Perform the following tests:
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 measure about 20 ohms.
PROBLEM: WATER BOILING, HEATING ELEMENTS DO NOT SHUT OFF.
SOLUTION
POSSIBLE CAUSE
1. Defective thermostat
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.
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
1. Water level is too low in heating
tank.
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.
2. Defective brew switch
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.
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.
4. Clogged fittings or tubing
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.
[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
1
2
3
4
5
6
7
8
10
11
11A
13
15
15A
20
21
22
23
24
PART
Nº
WC-5421
WC-1809
WC-1806
WC-3621
WC- 114R
WC- 122
WC- 202
WC-6324
WC-2936
WC-37237
WC-37265*
WC-6221
WC-5847
WC-5848
WC-4380
WC- 608
WC- 604
WC- 817
WC- 899
DESCRIPTION
COVER, TOP SS
FAUCET, PS/HPS SERIES HOT WTR
SEAT CUP, SILICONE F0R WC-1809
BREW CONE, UNIVERSAL 7.1" DIA.
SWITCH, ROCKER 120V SPST 15A
SWITCH, BREW 120V SPST 15A
LIGHT, BREW RED LIT 120V 1/3W
LABEL, SW PANEL LEXAN C1000AP
SPRAYHEAD, RED (Ø.131)
KIT, CONTACTOR RTRFT WC-400R
KIT, CONTACTOR RTRFT WC-400R
GRID, DRIP TRAY SS
COVER, FRONT C1000AP
COVER, FRONT C1000APT
GUARD, SHOCK/LEVEL CONTROL
LEVEL CONTROL, WATER 120V
TIMER, BREW 120V 1-8MIN.
VALVE, DUMP RIGHT 120V 12W
VALVE, DUMP LEFT 120V 12W
INDEX
Nº
25
26
29
30
31
33
35
37
41
42
43
45
46
51
53
56
57
59
62
PART
DESCRIPTION
Nº
WC-5310 TUBE, 5/16 ID x 1/8W SILICONE
WC- 517 T-STAT, CAPILLARY SPST 277V 22A
WC-4320 O’RING, ½” I.D.
WC-2977 FITTING, SPRAYHEAD PLATED
WC- 826L VALVE, INLET 1 GPM 120V 10W
WC-2401 ELBOW, 3/8 NPT X 1/4 FLRE PLTD
WC-5482 COVER, ASSY TOP WRAP BACK
WC-3502 LEG, 8-32 STUD SCREW BUMPER
WC-3709 KIT, VALVE REPAIR FOR WC-816,817
WC- 102 SWITCH, TOGGLE NON-LIT SPST
WC-3765L KIT, INLET VALVE REPAIR
WC-37008 KIT, TANK LID ROUND
WC-4314 INSERT, SILICONE GROMMETS
WC-5502 PROBE, WATER LEVEL
WC 934-04 ELEMENT, HEATING 2.5KW 220V
WC-4381 GUARD, SHOCK RESET THERM
WC- 522 THERMOSTAT, HI-LIMIT HTR CNTRL
WC-4382 SHOCK GUARD, HEATING ELEMENT
WC-6220 TANK COMPLETE, C1000AP-10
* 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 following 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 1-800-9950417. Effective date of this policy is April 1, 2003.
Additional conditions may apply. Go to www.wilburcurtis.com to view the full product warranty information.
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 technician’s ability to perform service is the responsibility of the owner of the equipment. This includes institutional and correctional 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 equipment 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)
Web Site: www.wilburcurtis.com
E-Mail: techsupport@wilburcurtis.com
Printed in U.S.A.
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8/07
F-1996 rev A