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Man PN 121751 Rev 20170617
Model
Height
Width
Depth
US
Canada
240 V
20:1
-LD
17.8
8.5 19.8
1750W
1400W
3500W
20:1
-AP
19.3
8.5 19.8
1750W
1400W
3500W
20:1
-TD
24.2
8.5 19.8
1750W
1400W
3500W
20:1
-
LP3
17.3
15.5
18.4
1700W
1400W
3800W
20:1 Coffee/Tea Brewer Operation and Service Manual
Model 20:1-AP
Airpot not Included
120 V
14.6A
14.6A
14.6A
14.2A
1
120 V
11.7A
11.7A
11.7A
11.7A
14.6A
14.6A
14.6A
17.1
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Man PN 121751 Rev 20170617
20:1 INSTALLATION / SETUP INSTRUCTIONS
WARNING:
circuit. Warranty will be void if machine is connected to any voltage other than that specified on the name plate.
Plumber's Installation Instructions
1) Plumb brewer in to water supply using 1/4 inch copper tubing. Flush water line before installing brewer to
remove sediment. Brewer should be connected to COLD WATER LINE for best operation.
2) Water pressure should be at least 20 PSI. For less than a 25 ft run, use 1/4" tubing and connect to 1/2" or larger
water line. The inlet water fitting on the back of the brewer is a 1/4" flare fitting.
3) If installed with saddle valve, the valve should have a minimum of 1/8" port hole for up to 25 ft run, and 5/16" port
hole for over 25 ft runs.
4) Manufacturer strongly recommends use of a water filter to reduce scale and sediment as well as to provide for a
better tasting beverage. Connect water line from filter to the flow control attached to the flared fitting extending
from the back of the brewer. Manufacturer recommends connecting to copper tubing.
5) Check for leaks.
Initial Setup Instructions
Ensure power switch on right rear of unit is in the off position. Plug or wire brewer to the appropriate voltage circuit
as indicated on the serial tag. Turn power switch to the on position. Brewer tank will begin to fill. Once the tank is
full the brewer will begin to heat. Ready light will come on to indicate tank has finished heating.
CAUTION: The water faucet will dispense hot water anytime the handle is pulled.
Programming - 121753 firmware
The 20:1 Brewer may be ordered as a standard coffee brewer or as a “combo” brewer capable of brewing both
coffee and iced tea beverages. The combo brewer incorporates a 2nd water valve to deliver the cold water dilution to
mix with the brewed tea concentrate. Brewers with r2 and higher firmware are also now available with an alternate
mechanical heater relay as an option to the solid state relay. The new main control board (part no 121753) includes
a couple of additional programming steps compared to previous control versions (part no 100729) to accommodate
these options. The tables on the next couple of pages have the new programming steps highlighted as an aid to
those familiar with the previous programming procedures.
The brewer has two program modes, service mode and user mode. The service mode is used to establish basic
operating parameters of the unit while the user mode allows the three buttons to be programmed for brewing into
various containers or for varying beverage volumes. Programming mode is initiated as outlined below. The following
pages will outline the various steps as displayed by the programming “screens”. The screens will loop continuously
until exiting the mode.
- Read and follow installation / setup instructions before plugging or wiring in machine to electrical
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Man PN 121751 Rev 20170617
Must be done if pump speed
Service Data
Service Mode is entered by holding any two of the buttons on the face of the machine while powering up the brewer.
The brewer firmware revision number is displayed for a couple of seconds when entering this mode. The table below
list the items that may be programmed along with available values or settings. Use the center brew button to
advance through the items and the left and right button to decrement or increment the values/selection respectively.
These items are programmed at the factory and will typically not need adjustment. For coffee only brewers (no 2nd
valve) ignore the dilution calibration and cold calibration volume. Use the center button to advance through those
items.
Item Selected Screen
Example
Values
Available
Comment
Water Temperature 200 170-205 Degrees F
Pulse Heating
New in version 2 of
121753 control board
Off On, OFF Must be OFF for mechanical relay. May be on or off for solid
state relay, on is preferred. If brewer has a heat sink on the
back, this indicates it has a solid state relay for tank heater.
End of Cycle Beeper On On, OFF Used to audibly indicate brew cycle has completed with a
series of beeps.
Brew Pump Speed b:05 1-10 Pump speed used for brewing
Not Used F:05 2-10 No effect. Unused feature.
Pump Calibration CAL N/A
See instructions below.
modified.
Hot Calibration Vol 39.0 25.0-99.9 Ounces. Only displays if calibration cycle was run.
Dilution Calibration CLd N/A Press left or right button to run dilution valve calibration.
Cold Calibration Vol 24 20-150 Ounces delivered during cold water dilution.
Water Fill Flow Rate 0.30 Off, 0.05-1.40 Adjustable in increments of .05 GPM. Should match flow rate
through valve.
Water Filter Capacity 100 Off, 500-2500 In tens of gallons. 50=500 gallons. Increments are 500
gallons.
Power Mode nor nor, SAV, dn Normal, Power Down, or Power Save.
Power Down/Save
Time
4:00 OFF, 0:30-
4:00
Hours:Minutes from last brew until brewer enters the selected
power mode. No effect if mode is “Off”.
Brew Counter 0-999 N/A Shows number of brew cycles since last reset (up to 999).
Service Data Srv N/A
Used to view temperature & probe data. See
below.
Exit End N/A Use left or right button when displayed to exit this mode.
Pump Calibration:
Pump calibration is necessary when the pump speed is changed or if the brewer is delivering substantially more or
less beverage than what it has been programmed for in the user mode. Pump speed may be adjusted up or down if
required to deliver water at a faster or slower rate to meet a specific beverage taste profile. Calibration tells the
brewer control how much hot water is delivered within a specific time frame so it can adjust the time required to run
to deliver the desired brew volumes.
Ensure the brew basket is in place. Place a suitably graduated container in place below the brew basket to capture
and measure the water delivered. To calibrate, enter the service mode as noted above and advance to the “CAL”
screen. Press either the left or right brew button and water delivery will begin. If the brewer has not reached
operating temperature, it will finish heating before automatically starting. The pump will cycle on and off for
approximately 2 minutes at which time the currently programmed volume is displayed. Use the left and right button
to decrement or increment the value to the measured value. For better accuracy, you may want to measure a couple
of cycles and average the measured values. At the least, the system should be primed before calibration by allowing
a partial brew cycle to run (10-15 secs).
Note: User mode will be entered automatically when exiting the service mode if calibration values have been
changed.
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Man PN 121751 Rev 20170617
Service Data consist of the tank temperature as measured at two points in the tank and an indication as to which
probe(s) are making contact with the water. To view data, enter the service mode as noted above and advance to
the “Srv” screen. Use the left or right button to enter service data mode. Use the center button to advance through
the data. The table below list the data that is displayed.
Data displayed Screen
Example
Values
Available
Comment
Lower Temperature 198 N/A Degrees F, OPn, SHr, - - -*
Upper Temperature
20.0
N/A Degrees F, OPn, SHr, - - -*
Probes 1:L L Displays L for liquid level if probes are in contact with the water.
Exit End N/A Use left or right button when displayed to exit this mode.
* The 3 dashes indicate that the temperature value reported by the thermistor is outside the display range, 100-215F.
This could be because the tank is cold or because the thermistor is out of calibration. If the tank temperature is
within the noted range, the thermistor is defective and should be replaced.
User Mode is entered by holding any one of the buttons on the face of the machine while powering up the brewer.
Note that the user mode is also automatically entered whenever the calibration volume setting is changed. The
beverage volumes, brew time, and visa-brew time can be programmed for each of the three buttons on the face of
the brewer. The brew volume may all be run through the basket or a portion of the total volume may be added to the
brewed concentrate as cold water dilution. The brewer will determine the minimum brew time possible based on
pump speed and calibration values as outlined previously. This time is set as the default whenever calibration values
are changed. The brew time can be extended to lengthen the water delivery time to meet a specific beverage taste
profile. For coffee only machines, brew total and brew concentrate should match. The table below list the data
displayed and values available.
Data displayed Screen
Example
Values
Available
Comment
Brew 1 Settings b1 N/A Displays briefly to indicate that the parameters are for brew
button 1 (left)
Brew 1 Total
64 Off, 30-128 Ounces. Button can be turned off and will serve as cancel only.
Brew Volume
Brew 1 Concentrate
Volume
64 30-Total Brew
Volume
Program the volume of the total volume that should be delivered
as hot water through basket. Total - Conc = Cold Dilution.
Brew 1 Time 3:30 Min-9:59 Calculated minimum to 9 minutes and 59 seconds.
Brew 1 delay 0:05 0-2:00 Delay between end of hot water delivery and start of cold water.
Only displays if Conc Volume < Total Volume and is > 0
Visa-brew 1 Time 0:30 0:00-4:00 Set to allow for beverage to finish dripping from basket after
water delivery time has been completed.
Brew 2 Settings b2 N/A Displays briefly to indicate that the parameters are for brew
button 2 (center)
Brew 2 Total
64 Off, 30-128 Ounces. Button can be turned off and will serve as cancel only.
Brew Volume
Brew 2 Concentrate
Volume
64 30-Total Brew
Volume
Program the volume of the total volume that should be delivered
as hot water through basket. Total - Conc = Cold Dilution.
Brew 2 Time 3:30 Min-9:59 Calculated minimum to 9 minutes and 59 seconds.
Brew 2 delay 0:05 0-2:00 Delay between end of hot water delivery and start of cold water.
Only displays if Conc Volume < Total Volume and is > 0
Visa-brew 2 Time 0:30 0:00-4:00 Set to allow for beverage to finish dripping from basket after
water delivery time has been completed.
Brew 3 Settings B3 N/A Displays briefly to indicate that the parameters are for brew
button 3 (right)
Brew 3 Total
84 Off, 30-128 Ounces. Button can be turned off and will serve as cancel only.
Brew Volume
Brew 3 Concentrate
Volume
42 30-Total Brew
Volume
Program the volume of the total volume that should be delivered
as hot water through basket. Total - Conc = Cold Dilution.
Brew 3 Time 3:30 Min-9:59 Calculated minimum to 9 minutes and 59 seconds.
Brew 3 delay 0:05 0-2:00 Delay between end of hot water delivery and start of cold water.
Only displays if Conc Volume < Total Volume and is > 0
Visa-brew 3 Time 0:30 0:00-4:00 Set to allow for beverage to finish dripping from basket after
water delivery time has been completed.
Exit End N/A Use left or right button when displayed to exit this mode.
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Man PN 121751 Rev 20170617
OPERATION INSTRUCTIONS
Coffee/Tea Preparation Procedures
1) Place filter into brew basket.
2) Put the proper amount of coffee or tea into the filter. Filter not required for filter pack coffee/tea.
3) Slide the brew basket into holder.
4) Place the appropriate empty decanter into position below the brew basket. For airpots first open lid and remove
pump stem unless of a brew through design. For other dispensers remove the lid unless it is a brew through
design.
5) Press the appropriate brew start switch. Note: a brew cycle may be initiated even if the heating light is on. The
brewer features an autoarm circuit which will flash the heating light indicating that the brewer is heating and will
begin to brew immediately after the heating cycle is complete. To over ride autoarm, hold in brew button until
cycle starts (5 seconds).
6) Do not remove decanter. Brew cycle may be canceled by depressing any brew button or the cancel switch on
the front control panel.
7) Hot water will be delivered through the sprayhead. This distributes the hot water evenly over the coffee bed
within the brew basket. The coffee brew will drain from the brew basket into the decanter below.
8) The Brewing light should continue to flash until all the liquid has finished flowing from the brew basket. Do not
remove decanter until the brewing process has stopped and all liquid has stopped flowing from the brewbasket.
9) The resultant coffee brew should be crystal clear and have the desired properties attainable through excellent
extraction.
10) To clean brew basket simply remove from brew rails and dump filter into waste basket. The brewing process, as
described above, can now be started again.
Error Messages
This brewer incorporates a number of self diagnostic test that are routinely run. If a fault condition should occur the
unit will display an error number as outlined below. All errors may be reset by powering unit off and then back on.
Errors E1 and E2 are auto-resetable and will clear themselves if the condition that caused them goes away. E3 will
disable the heater but will allow a brew cycle to complete. The brewer will try to heat again when a brew cycle is
started. E4 and E-A must have power to unit cycled to clear them. E5 will force brewer to use its default settings for
brewing. E7 and E8 will clear when a brew cycle is started. E9 will disable input from display board. If error repeats,
correct the cause of the error.
Error
Number
E1 Open
E2 Shorted
E3 Heater Run
E4 Tank Fill Error Water did not reach probe in timeout
E5 Comm Error Serial communication error to/from non-
E7 Open Motor
E8 Bad (Open)
E9 SPI Comm
E-A Possible Leak
Full Filter Full Water filter has reached capacity. Replace filter.
Description Cause What to Check
Thermistor
Thermistor
Resistance extremely high from lower
thermistor. Upper thermistor is also bad.
Resistance extremely low from lower
thermistor. Upper thermistor is also bad.
Check/replace thermistor.
Check/replace thermistor.
Water did not heat within timeout period Check element for short and for proper
Error
resistance. Check relay, hi-limit
thermostat, and harness. Replace if bad.
Check valve function and flow rate.
period. 4 minutes for initial fill, 1-1/2
minutes during normal operation.
Replace valve or increase flow rate.
Check probe(s) for excess scale.
Replace main board.
volatile memory (EEPROM).
Circuit
Motor Driver
Error
Open motor circuit. Pump 0 or
pump 1.
Bad/open motor driver. Pump 0 or pump
1.
Serial communication error to/from
display board.
Check harness/motor continuity.
Replace if defective.
Replace main board.
Verify good connection in proper port.
Try new display board. Try new main
board.
Water system may have a leak. Check all plumbing system components
Detected
for possible leak. Look for water on
counter.
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Replacement Parts:
Electrical Components
121753 Board, main control
100731 Display board, red LED
121478 Display board, blue LED
105115 Transformer,120V primary, 24 VCT 40VA
119804 Pump assembly, gear water
109937 Pump only, gear water
121756 Valve assy, double solenoid
100255 Valve assy, solenoid
110626 Switch, DPST, black rocker
100085 Switch, SPST, lighted rocker
110367-10 Relay, Solid state, 50 amp
110958 Relay, Mechanical, 12VDC, SPST, 30A
202025 Element, tank 120V 1750W
701170 Element, tank 120V 1400W
202057 Element, tank 120V 1100W
202027 Element, tank 240V 3500W
111593 Thermostat, hi-limit, 221F, 25A
100269 Bracket, hi-limit thermostat
100010 Warmer plate assy, 120V 100W, black
100187 Warmer element, 120V 100W
151677 Thermistor probe, dual temp 7.312
500404 Probe assy, liquid level, 90 deg, 1.45"
Labels
119978 Label, faceplate, red window
121479 Label, faceplate, blue window
401361 Label, combo faceplate "Regular Bold Tea"
119996 Label set, round icons
100254 Decal, Hot Surfaces warning
Flow controls
110305 Flow regulator, PDS adjustable, low
101350 Flow regulator, diaphragm type, .35
100298 Flow washer, .35 GPM
Baskets/servers
110985 Brewbasket, black coffee
110856 Brewbasket, clear tea
121752 Pitcher, ice tube, 3.3 liter tea
Tubing/seals
110885 Faucet assy, lift up handle
803131 Hose, reinforced silicone, 1/4 ID X .52 OD
111240 Hose, grey silicone, 1/4 ID X 1/2 OD
119843 Sprayhead tube assy, internal
201173 Nut, sprayhead, 7/16-20 S/S
201208 Sprayhead, RD dump, .086 drill
152207 Plug, tank silicone
500038 Grommet, silicone, thermistor, .06 hole
500350 Grommet, silicone, probe, .31 hole
Miscellaneous
100665 Foot, rubber push-in, plastic base
100078 Foot, screw in, metal base
Man PN 121751 Rev 20170617
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Wiring Diagram
Man PN 121751 Rev 20170617
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Man PN 121751 Rev 20170617
WARRANTY
Applies to all equipment manufactured after 2/1/2017. This warranty supersedes
all other previous warranties that are currently in manuals.
Newco warrants equipment manufactured by it for 1 year parts and labor.
Accessories and Dispensers 1 Year parts only.
Electronic Circuit and Control Boards- 3 years parts, 1 year labor.
Equipment manufactured by others and distributed by Newco- please see original equipment manufacturers
warranty, Newco will follow.
These warranty periods run from the date of sale Newco warrants that the equipment manufactured by it will
be commercially free of defects in material and workmanship existing at the time of manufacture and
appearing within the applicable warranty period. This warranty does not apply to any equipment, component
or part that was not manufactured by Newco or that, in Newco’s judgment, has been affected by misuse,
neglect, alteration, improper installation or operation, relocation or reinstallation, improper maintenance or
repair, incorrect voltage applied to the unit at any time, damage or casualty. This warranty does not apply to
any equipment failures related to poor water quality, excessive lime and chlorine and non periodic cleaning
and descaling. Warranty is null and void if muriatic or any other form of hydrochloric acid is used for cleaning
or deliming. In addition, this warranty does not apply to replacement of items subject to normal use including
but not limited to user replaceable parts such as faucet seat cups, sight gauge tubes, washers, o-rings, tubing,
seals and gaskets.
This warranty is conditioned on the Buyer 1) giving Newco prompt notice of any claim to be made under this
warranty by telephone at (800) 556-3926 or by writing to 3650 New Town Blvd, Saint Charles, MO 63301; 2) if
requested by Newco, shipping the defective equipment prepaid to an authorized Newco service location; and
3) receiving prior authorization from Newco that the defective equipment is under warranty.
THE FOREGOING WARRANTY IS EXCLUSIVE AND IS IN LIEU OF ANY OTHER WARRANTY, WRITTEN OR
ORAL, EXPRESS OR IMPLIED, INCLUDING, BUT NOT LIMITED TO, ANY IMPLIED WARRANTY OF EITHER
MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE. The agents, dealers or employees of Newco
are not authorized to make modifications to this warranty or to make additional warranties that are binding on
Newco. Accordingly, statements by such individuals, whether oral or written, do not constitute warranties and
should not be relied upon.
If Newco determines in its sole discretion that the equipment does not conform to the warranty, Newco, at its
exclusive option while the equipment is under warranty, shall either 1) provide at no charge replacement parts
and/or labor (during the applicable parts and labor warranty periods specified above) to repair the defective
components, provided that this repair is done by a Newco Authorized Service Representative; or 2) shall
replace the equipment or refund the purchase price for the equipment.
THE BUYER’S REMEDY AGAINST NEWCO FOR THE BREACH OF ANY OBLIGATION ARISING OUT OF THE
SALE OF THIS EQUIPMENT, WHETHER DERIVED FROM WARRANTY OR OTHERWISE, SHALL BE LIMITED,
AT NEWCO’S SOLE OPTION AS SPECIFIED HEREIN, TO REPAIR, REPLACEMENT OR REFUND.
In no event shall Newco be liable for any other damage or loss, including, but not limited to, lost profits, lost
sales, loss of use of equipment, claims of Buyer’s customers, cost of capital, cost of down time, cost of
substitute equipment, facilities or services, or any other special, incidental or consequential damages.
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