Fetco MBS-1221 Specifications

TABLE OF CONTENTS
Specifications and Requirements................................... 2
Starting The Brew........................................................... 4
Enter Programming ........................................................ 4
Exit Programming & Save .............................................. 4
A PROGRAM ................................................................. 6
B GENERAL................................................................... 7
C SERVICE INPUTS...................................................... 8
D SERVICE OUTPUTS.................................................. 8
E CALIBRATION ............................................................ 9
F SERVICE MENU....................................................... 10
F ERROR CODES ....................................................... 11
G COUNTERS ............................................................. 12
H SAVE & EXIT............................................................ 13
Operator Training ......................................................... 14
Wiring Diagram ............................................................ 17
Parts Diagrams ............................................................ 18
Small Spray Head Assembly ....................................... 24
Hot Water Faucet Relocation Instructions ................... 25
User’s Guide and Operator Instructions
MBS-1221 Multi Beverage Combination Brewer for Coffee, Iced Tea, Hot Tea
FETCO Commercial Beverage Equipment
FETCO MBS 1221-with brew shelf and MBS122S (not shown)
CONTACT INFORMATION
FETCO® FOOD EQUIPMENT TECHNOLOGIES COMPANY
600 ROSE ROAD
LAKE ZURICH • IL • 60047-0429 • USA
INTERNET: www.fetco.com
©2021 FOOD EQUIPMENT TECHNOLOGIES COMPANY
PATENTS:https://www.fetco.com/pl,pages,patents,74.html
PHONE: [phone] (US & CANADA)
[phone] (All Countries)
FAX: [phone]
EMAIL:[e-mail]
[e-mail] (to order parts and equipment)
[e-mail] (all service queries)
August 2021P202
Multi Beverage Brewer: MBS-1221
fetco.com

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Specifications and Requirements
Water Requirements:
Electrical: Supplied with 120V cord & plug
Water inlet fitting is a 1/4 inch male flare
User adjustable to 220-240 volt terminal block
Pressure: 20-75 psig, (138-517kPa) 1½gpm/(5.7lpm)
For Iced tea: brewer is factory calibrated to a non-fluctuating
stable water supply pressure at 45 psi.
Tank Temperature, as set by factory:
200°F (93°C) inside water tank (at sea level)
Iced Tea Batch Temperature-user adjustable
200°F-207°F-/ 93°-98°C
Water supply: (Optimal) 100-150TDS
All beverage equipment must use filtered water
Brew Volume-Coffee: Full Batch 2.20 liters
User adjustable to up to 0.85 gallon/3.25 liters per brew
Iced Tea Dilution Ratio: 1:4 factory set brew to water
Factory setting adds 2.4 gallons of cold water to 0.6 gallon
brew for a 1:4 ratio Iced tea
(2.3liter brew/9.1 liter dilution)
Dilution volume is user adjustable from 0-4Gal;0-15.2L
Brew Volume-Iced Tea: Full Batch 11.40 liters/3 gallons
User adjustable to up to 4.9 gallon/18.7 liters per brew
Brew batch and dilution ratio user adjustable
Total Brew Cycle—Factory default setting (Batch 1): 5 minutes=[3:30 minute brew time + 1:30 minute drip delay]
Iced Tea-(Batch 3) 4:30 minutes=[3:00 minute brew time + 1:30 minute drip delay] Batch 2 may be set for either
Brew-Process parameters are user controllable for: Brew Volume, Brew Time, Prewet Percent and Delay,
Drip Delay, Tea Batch Temperature, Dilution Volume and Dilution Timing (with brew or after brewing)
Electrical Specifications for domestic-dual voltage Standard height with brew shelf
SKU
Model description
Electrical
Connection
Brew Basket
Heater
Configuration
Voltage KW
Amp
Draw
Brew Volume/Hour
M1221US-1A117-P
M001
NEMA 15-5P
Plastic tea
Metal coffee
1 X 1.7 kW 120 1.7 14.7 4.4 gal/16.5 liters
M1221US-1A117-M
M001
NEMA 15-5P
Metal tea
Plasic coffee
1 X 1.7 kW 120 1.7 14.7 4.4 gal/16.5 liters
M1221US-1X117-PM001
Domestic-Dual Voltage
NEMA 15-5P
Terminal Block
Plastic tea
Plastic coffee
1 X 1.7 kW
1 X 3.0 kW
100-120
200-240
1.3-1.8
2.2-3.1
12.3-14.7
10.9-13.0
4.4 gal/16.5 liters
6-7 gal/22-21 liters
M1221US-1X117-MM001
Domestic-Dual Voltage
NEMA 15-5P
Terminal Block
Plastic tea
Metal coffee
1 X 1.7 kW
1 X 3.0 kW
100-120
200-240
1.3-1.8
2.2-3.1
12.3-14.7
10.9-13.0
4.4 gal/16.5 liters
6-7 gal/22-21 liters
Electrical Specifications for domestic-dual voltage Short version - no brew shelf
SKU
Model description
Electrical
Connection
Brew Basket
Heater
Configuration
Voltage KW
Amp
Draw
Brew Volume/Hour
M122SUS-1X117-PM001
Domestic-Dual Voltage
NEMA 15-5P
Terminal Block
Plastic tea
Plastic coffee
1 X 1.7 kW
1 X 3.0 kW
100-120
200-240
1.3-1.8
2.2-3.1
12.3-14.7
10.9-13.0
4.4 gal/16.5 liters
6-7 gal/22-21 liters
Factory supplied with 120 volt NEMA 5-15 cord and plug. Dual voltage brewers may be field converted to 200-240 volts-see pages 13 and 19
International
SKU
Electrical
Connection
Brew Basket
Heater
Configuration
Voltage KW
Amp
Draw
Brew Volume/Hour
M1221IN-1B130-PM005 CEE 7/7
Plastic tea
Plastic coffee
1 X 3.0 kW 200-240 2.1-3.0 10.9-13.0 4.4 gal/16.5 liters
M1221NM-1X117-PM001
DUAL VOLTAGE
NEMA 15-5P
Terminal Block
Plastic tea
Plastic coffee
1 X 1.7 kW
1 X 3.0 kW
100-120
200-240
1.3-1.8
2.2-3.1
12.3-14.7
10.9-13.0
4.4 gal/16.5 liters
6-7 gal/22-21 liters
M1221CE-1B130-PM005 CEE 7/7
Plastic tea
Metal coffee
1 X 1.7 kW 230 2.8 12.5 4.4 gal/16.5 liters
M1221CE-1B130-PM006 UK1-13P
Plastic tea
Metal coffee
1 X 1.7 kW 230 2.8 12.5 4.4 gal/16.5 liters
Export Only 250V 13 A
BS 1363A UK
G
W
NEMA 5-15P
Plug Configuration
Export Only 250V 16 A
“Schuko" CEE 7/7 PLUG

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Rough-In Drawings
MBS-1221 Side MBS-1221 Front Adjustable shelf positions for different sizes and types of air pots
MBS-1221 Short only MBS-Short-1221 Front MBS-Short-1221 Side All equipment-BACK
Weights and Capacities
Dispenser
Model Height Width Depth
Water
tank
capacity
Empty
Weight
Filled
Weig ht Filled
Weight
Shipping
Weight
Shipping
Dimensions
MBS-1221
Brewer
37 in
940 mm
9 1/4 in
235 mm
17 in
440 mm
2.7 gallon
10.1 L
35bs.
15.9 kg
60 lbs.
27.2 kg
50 lbs.
22.7 kg
27” x 11.5” x 39”
681mmX292X991mm
MBS-1221
Short
30 in
762 mm
9 1/4 in
235 mm
18 1/4 in
464 mm
2.7 gallon
10.1 L
33bs.
15 kg
57 lbs.
25.9 kg
48 lbs.
21.8 kg
27” x 11.5” x 39”
681mmX292X991mm
Calibrated for
2.2 L/74 oz/0.58gal Coffee air pot (Batch 1)
3 gal 11.4 liter Iced Tea (Batch 3)
Coffee dose calibrated for 120g/4.2oz
Range: 100-140 gram 3.5-4 ounce dose
Tea dose range: 70-113 gram/2.5-4.0 oz
Coffee Filter
FETCO# F002 or 13” X 5”

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STOP
EXIT
H NO +
Starting The Brew
1. Turn the power switch “ON”.
2. Prepare a brew basket with the correct size filter and appropriate amount of coffee or tea.
3. Slide the brew basket completely into the rails.
4. Place a clean, empty, preheated dispenser under the brew basket.
5. Select a batch & hold the corresponding BREW button in for 1 second to start
6. -STOP button will illuminate, Brew Selector button will illuminate
-Countdown time will display. Default time setting is 5:00 (coffee) 6:45 (iced tea
-Selected BREW button will slowly pulsate to indicate brew is in progress.
-All other BREW buttons for that brew head will be unlit.
7. When the brew cycle is finished,
STOP button will extinguish and the BREW button will continue to pulsate to indicate DRIP
will display to show the 1.30 (one and one-half minutes) drip delay setting.
This indicates that coffee may still be dripping from the brew basket
For safety- do not remove brew basket until drip-out is complete.
Enter Programming
There are 7 menu groups-A-F plus EXIT (G).
See the following pages for the batch parameter definitions and all settings for the brewer
TO ENTER PROGRAMMING
1-Turn brewer “OFF” from power switch
2-Turn power switch to “ON”
…Screen will initialize and then
display digital process notifications
3-After Initialization- “STOP” Lamp turns on
4-Quickly press “STOP” button (no need to hold)
When brewer is In PROGRAMMING MODE
-the screen will display:
|BATCH PRG|
|A (or B-F) |
-Illuminated LED indicates active keypad positions
See the following pages for batch parameter definitions
and all settings for the brewer
Enter Programming to Make Changes
Section B –“General Settings” to change tank temperature shown below
Enter Programming-Press
STOP button until the
General Settings (“B”)
screen appears
From the “B” screen
Press button 1to toggle
to the Tank Temperature
Screen (default is 200°)
From Tank Temp screen
Toggle buttons 2or 3to
select the desired
temperature
From Tank Temp screen
Press button 1to toggle
to the next selection in
General Settings or SAVE
To SAVE and EXIT
Press the STOP
button to
the “H” screen. Proceed
to screen two below
Exit Programming & Save
Control Setting Changes
From any screen-
Press
STOP button until the
EXIT (“H”) screen
appears
From the “H” screen
Press button 2to
toggle to the EXIT-YES
screen
From EXIT screen
Press button 1to
toggle to the SAVE
screen
From SAVE screen
Press button 2to
toggle to the SAVE-
YES screen
To SAVE and EXIT
Press button 1to
SAVE your changes
and EXIT to
OPERATING MODE
STOP
General Settings
B
STOP
Brew at Temp
B2 YES-
STOP
EXIT
H NO +
STOP
Programming A-H
A-H
STOP
EXIT
H YES -
STOP
SAVE
H NO +
STOP
SAVE
H YES -
STOP
Brewing
4:40[C]5:45[IT]
STOP
FETCO
Ready to Brew
MBS-1221
Ver.2.0a.201221
STOP
Batch Program
A
STOP
STOP BUTTON
↓
ON/OFF switch
is located on
lower right on
back of brewer
STOP
Tank Temperature
B1 200°F+-
STOP
Tank Temperature
B1 171° to 207°

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Programing Menu Layout
A10 to A70
B10-B40
C10-C50
D10-D90
E10-E70
F10-F120
G1-G15
H10-H11
Batch Parameters
General Settings
Service Inputs
Service Outputs
Calibration
Service Menu
Counters
Exit and Save
|
|
|
|
|
|
|
|
A11
Brew Volume
B1
Tank Temperature
C1
LLC Probe
D1
Heater SSR
E1
Ready Temp. Offset
F1
Firmware Ver.
G1
Filter Used
H1
Save Changes
|
|
|
|
|
|
|
|
A12
Brew Time
B2
Brew at Temp
C2
Basket Sensor
D2
Fill Valve
E2
LLC Sensitivity
F2
Bootloader Ver.
G2
Filter Life
H2
EXIT?
|
|
|
|
|
|
|
A13
Prewet Percent
B4
Show Tank Temp
C4
Tank Temperature
D4
Brew Valve
E3
Slow Flow Compensate
F3
Select Model
G3
Filter Reset
|
|
|
|
|
|
|
A14
Prewet Delay
B5
Units of Temp
C5
USB Drive
D8
Basket Lock
E5
Brew Flow
F5
Option BB Lock
G4
Counter Reset
|
|
|
|
|
|
|
A16
Drip Delay
B6
Units of Volume
C6
Keyboard Test
D10
Dilute Valve
E9
Dilute Flow
F8
Backup to USB
G5
Choose Counter
|
|
|
|
|
A20
Batch (2) Enabled
B7
Customer Name
D12
LCD Brightness %
F9
Restore from USB
G10
Brewer Volume [LT]
|
|
|
|
|
A31
Brew Volume
B8
Customers Name
D13
LED Brightness %
F10
Restore Defaults
G11
Brewer Volume [R]
|
|
|
|
A32
Brew Time
B9
Demo Mode
F11
Error Log
G14
Rt Brews [LT]
|
|
|
|
A33
Prewet Percent
B10
Eco Mode
F12
Erase Error Log
G15
Rt Brews [R]
|
|
|
A36
Drip Delay
B11
Eco Idle Time
F13
Service Phone#
See Page 10!
|
|
|
A37
Dilute Mode
B12
Eco Idle Temp
F15
Override Rt BBS
|
|
|
A37
Dilute Delay
B13
Filter Life
F17
Override Rt BBL
|
A37
Dilute Volume
|
A39
Batch Temp
|
A90
Copy Batch
|
A91
Copy Batch: From
|
A92
PASTE: To
The A menus [A1-3] correspond to batch buttons [1-3] on the touch panel
Access the A menus to PROGRAM & make changes to individual menu recipes. Menu settings can be copied
Menu positions A1 & A3 are permanent. Menu A2 can be removed by operator if desired
From A PRG screen
Press button 1 to go
to the A menu access
screen
From A11 screen
Press STOP to scroll to
A20. Batch A20 can
be configured to be
Tea or Coffee
(A1 is permanent)
From A20 screen
Press STOP to
scroll to the third
batch in the “A”
menus. Make any
changes as required
From A30 screen
Press STOP to scroll
through COPY and
further to remaining
programming keys.
To continue
Press STOP to scroll
through sections
See SAVE & EXIT in
previous table
.
RECIPE Location map
View and change settings for the brew recipes from the “A” screens with
the controls in PROGRAMMING.
The batch A1 position is permanent and cannot be disabled
To access programming steps A20 and A30
Batch programming steps A20 or A30 will not display from step A10
Programming for steps A20 and A30 are accessed from any step in A10
by pressing the STOP button (1x for A20;2x for A30).
DISPLAY

STOP
BATCH
A1
(permanent)
BATCH
A2
(selectable)
BATCH
A3
STOP
Batch Program
A
STOP
BREW VOLUME
A1.1 2.20L +/-
STOP
Brew Volume
A3.1 2.30L -
STOP
General Settings
B-
STOP
Batch Enabled
A20 NO+
STOP
Batch Program
A

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A PROGRAM
Menu Features: Batch Parameters
The settings below are shown for the first batch and third bottons on the brewer. Second batch is user optional.
See how to access all A menus on the previous page. Below are the brew settings for default A1 & A3batches
POSITION Program Items Factory set Default Programming Range Increments Notes
A11
[Coffee]
Batch Volume
2.20liters
0.58gal
0.95 to 4.0L
0.25 to 1.06 gal
0.05L
0.01G
Unit software is in liters;
Can convert to gallon
A12
Brew Time
(MIN:SEC)
3:30 minutes 2:00 – 12:00 15 sec
Default total brew time is
5:00 minutes
A13 Prewet Perc. 0% 0.00 – 25.0% 1%
Percentage of total brew
volume
A14
Prewet Delay
(Pause after prewet
completes)
0% [1:00 Min] [0:10 – 5:00] 10 sec
The time between
prewetting and start of
brew cycle.
This feature appears
ONLY if Prewet >0:00
A16 Drip Delay 1:30 mm:ss 0:30 – 6:00 min. 10 sec
Time brew basket should
remain in place during final
drip-out
Drip delay remains “ON”
for 2:00 minutes if STOP is
pressed during brew †
A20
[User Set]
Batch Enabled
A20 NO +
NO OFF/Coffee/or Tea Select Batch presets below
A20 Batch Type
Appears only
when enabled
OFF/Coffee/Tea See below
Selectable by user to be
an additional batch setting
“COFFEE"
Will set brewer to COFFEE presets as in A10-A20 (above) Middle button will activate and illuminate.
“TEA”
Will set brewer to TEA presets as in A30-A39 (below) Middle button will activate and illuminate.
“OFF”
Middle button will be inactive and will be unlit.
A30
[Iced Tea]
Batch Enabled
A30 YES -
NO +
YES
(Active)
Middle and Bottom
batches A2,A3
Batch on
or off
Batches may be
individually enabled,
rewritten or deactivated
A31 Batch Volume
2.30liters
0.58gal
0.95 to 4.0L
0.25 to 1.06 gal
0.05L
0.01G
Unit software is in liters;
converts to gallon
A32 Brew Time 3:00 minutes 2:00 – 12:00 15 sec
Default total brew time is
5:00 minutes
A33 Prewet Percent 0% 0.00 – 25.0% 1%
Percentage of total brew
volume
A34
Prewet Delay
(see A14 above)
0% [1:00 Min] [0:10 – 5:00] 10 sec
Time between prewetting
and start of brew cycle.
A36
Drip Delay
1:30 mm:ss
0:30 – 6:00 min.
10 sec

See Note A16
A37 Dilution Mode Normal Normal/Fast
NORMAL: Dilution after
the brew is completed
FAST: Dilution is during
the brew cycle
A37 Dilution Delay 0.10 0:00 –12:00 min 10 sec
Pause after brew to begin
dilution. Often used to
add sweetener
A37 Dilution Volume
9.1 liters
2.4 gallons
0:00 –15:15 liters
0:00 –4:0 gallons
0.05L
0.01G
Unit software is in liters;
converts to gallon
A39 Batch Temp
204°F
95.6°C
200°F-207°F
93°-96°C
1°F
1°C
Activates only wen brewer
is in Tea Brewer mode
A90
Copy Batch
A91
Copy From
Copy From Batch 1 + A91 1 (1-6) Select recipe to copy
A92
(PASTE TO)
Paste To Batch? 1 + A92.1 (1-6) Select where to paste
A10 (Left Batch COFFEE) and A30 (Right Batch TEA) cannot be disabled.
A20 middle batch may be set for coffee or tea or disabled.
† DRIP DELAY will not activate when STOP is pressed within 5 seconds of starting a brew time
.

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B GENERAL
Brewer Operation Control Settings, Adjust Brew Flow Rate
POSITION Program Items Factory set Default Programming Range Increments Notes
B1 Tank Temp.
200°F-or-93°C
NOTE:
Units are Celsius by
default
170° to 207°F
77° to 97°C
1.0°F
0.5°C
Chart to correct for high
altitude below
B2
Brew at Temp.
“YES”
ON/OFF
YES/NO
SEE NOTE BELOW
B3
Batch Temp
OFF
ON/OFF
ON/OFF
For tea brew menu
B4
Show Tank
Temperature
YES YES/NO
To display HW tank
temperature on screen
B5
Units of Measure
TEMPERATURE
° Fahrenheit Fahrenheit/Celsius C/F
NOTE: Overwrites user
settings (see page 9)
B6
Units of Measure
VOLUME
L LITERS Liters/Gals/Ounces L/Gal/Oz
NOTE: Overwrites user
settings
(see page 9)
B7 Customer Name Off NO or YES For name on screen
B7 Customer Name (only if above is “ON)
Scroll with batch
keys
A-Z;a-z;0-9 16 characters total
B9 Demo Mode OFF DEMO ON/OFF
Demonstrates the controls for
training. Disables all
components in demo mode
B10 Eco Mode Off ON/OFF YES/NO
If Selected: Lowers hot water
tank temperature after preset
time of inactivity
B11 Eco Idle Time
(turns on if B10 active) 1Hr 1-6 hours 1 hour Time of inactivity to go into
ECO Mode
B12 Eco Idle Temp
(turns on if B10 active) 169°F 158-176°F 1 degree Temperature that hot water
tank is lowered to
B13 Filter Life OFF ON/OFF YES/NO
Water filter life is accessed in
G-Counters. This is user set
and will display indicator to
change water filter
BREW AT TEMPERATURE DEFINITIONS
DEFAULT: BREW AT TEMP: “ON”
(FACTORY DEFAULT FOR BREWER)
“BREW at TEMP:
-Batch will not start if tank temperature
is below set point.
-Display will show “HEATING”
and hot water tank temperature
The “BREW START” entry buttons will not
illuminate until the hot water tank reaches the
selected temperature.
Notifications shown on screen:
TEXT: HEATINGTank above 87°C/189°F-
will allow brew at low temperature.
Extracted tea flavor may be affected
TEXT: L. HEATTank above 76°C/169°F-
will allow brew at low temperature.
Tea flavor will be noticeably affected
Tank temp
STOP is not lit 
& BREW START
buttons not lit.
and are disabled.
Batch menu
button(s ) will
illuminate and
“READY”
will display
on screen when hot
water tank
temperature is at
setpoint
Hot water tank not at
brew temp setpoint.
HEATING
160°F
FETCO
Ready to Brew
USER SELECTABLE OPTION: BREW AT TEMP: OFF
(Not recommended) Unit will operate at reduced temperature
Allows brewing at any temperature above 169°F/76°C
Chart to correct for altitude for boiling point
in tank water temperature.
[ft] [m] Suggested
Setting[°F]
Boiling
point[°F]
Suggested
Setting[°C]
Boiling
point [°C]
0
0
205
212.0
96
100.0
500
152
205
211.0
96
99.5
1000
305
200
210.1
93
98.9
2000
610
200
208.1
93
97.8
2500
762
200
207.2
93
97.3
3000
914
200
206.2
93
96.8
3500
1067
197
205.3
92
96.3
4000
1219
195
204.3
91
95.7
4500
1372
194
203.4
90
95.2
5000
1524
194
202.4
90
94.7
5500
1676
193
201.5
89
94.2
6000
1829
192
200.6
89
93.6
6500
1981
191
199.6
88
93.1
7000
2134
190
198.7
87
92.6
7500
2286
188
197.8
86
92.1
8000
2438
187
196.9
86
91.6
8500
2591
185
196.0
85
91.1
STOP
STOP

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C SERVICE INPUTS
Brewer Sensors and Keypad
POSITION Program Items Factory set Default Programming Range Increments Notes
C1
LLC Probe
continuity
Direct read
TDS tank reading
(water resistance)
≈850- LOW
≈1600-HIGH
Nominal values
C2
Brew Basket
Sensor
Direct read YES or NO
C4
Tank
Temperature
Direct read
Hot water tank
temperature
Actual values
C5
USB Drive
NO
C6 Keyboard Test Calibrate
Checks buttons
under membrane
YES/NO
Follow directions on
the screen
D SERVICE OUTPUTS
Test Valves and Heaters; Set screen brightness
POSITION Program Items Factory set Default
Programming
Range
Increments Notes
D1 Heater SSR
Test
Press button 2 to test
(button 1 stops test)
Activates heater
Default is 10 sec..
Toggle +/-
OFF or ON
Energizes Heater(s)
WARNING!
Service use only.
D2 Fill Valve Test
Press button 2 to test
(button 1 stops test)
Activates valve
Default is 10 sec.
Toggle +/-
OFF or ON
Press To Test
D4 Brew Valve Test (Press to test) Activates valve
Default is 10 sec.
Toggle +/-
OFF or ON
Runs valve to verify flow.
NOTE: Have container
under brew basket.
D8 Basket Lock (Press to test)
Toggle +/-
OFF or ON
Press To Test
D10 Dilute Valve (Press to test)
Toggle +/-
OFF or ON
Press To Test
Single series displays right side only Left Valve display is only for twin side brewer.
D12 LCD Brightness Brightness=90% 20-100% 5%
Adjust LCD screen
brightness only-Not for
LEDs under buttons
D13 LED Brightness Brightness=60% 20-100% 5%
Adjust LED button
brightness only-Not for
the screen display LCD
.

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E CALIBRATION
Brewer Sensors and Keypad
POSITION Program Items Factory set Default Programming Range Increments Notes
E1 Ready Temp. Offset
-3°F
-2°C
-2° to -10°F
-1° to -5° C
1°F
1°C
Compensates output to
measured temperature
E2 LLC Sensitivity
NORMAL
(“NORMAL” for
most water)
HIGH
(Biased for reverse
osmosis water or
very pure water)
NORMAL
HIGH
Liquid level control
sensitivity.
High,1300Ω is for reverse
osmosis water or very
pure water.
E3
Slow flow rate
from supply
OFF OFF/ON
Toggle +/-
YES or NO
Trims fill system for low
supply or Flojet use
E5 Brew valve flow rate: 1.60L/54oz/0.42G
1.30-1.90Liter
0.34-0.52G
0.05L
0.013G
Adjusts flow rate
E9 Dilute valve flow 2.55L/0.67G
1.75-3.30Liter
0.46-0.86G
0.05L
0.013G
Adjusts flow rate
Use this formula to compensate for minor discrepancies in actual volume versus programmed volume.
See “PROGRAM” E5 For valve settings and calibration. Factory set brew valve flow rates are in liter/min
Default Brew Valve Flow Rate—MBS-1221 Brewers
MBS-1220
Oz/L/G/minute
Range
ACTUAL VOLUME
X
CURRENT
SETTING
=
NEW
SETTING
Brew Valve FR
54/160/0.42
45oz-64oz
Dilute Valve FR
86oz/2.55L/0.67G
38oz-112oz
PROGRAMMED
VOLUME
Set FR lower to increase volume, set higher to decrease volume.
Use the formula above to determine the correct setting

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F SERVICE MENU
Software & Code View and Settings
POSITION
Program Items
Factory set Default
Programming Range
Increments
Notes
F1 Display Firmware 2.1.210323
Displays current
version [4/2021]
F2 Display Bootloader 2.0.210317
Displays current
version [4/2021]
F3 Select Model MBS-1221
Will need reboot
Scroll to brewer
model Save & Exit
CBS
-1221
CBS
-1231, CBS-1232
CBS
-1241, CBS-1242
CBS
-1251, CBS-1252
CBS
-1261, CBS-1262
M
BS-1221, MBS-1251
TBS
-1221, TBS-1222
NOTE: Overwrites
all user settings
(See below)
F5 Option BB Lock NO NO or YES
Enables brew
basket lock
F8 Backup to USB Follow prompts
Saves
settings
Insert blank USB
F9 Restore From USB
Applies settings
from USB
Insert USB
Will need reboot
F10 Restore Defaults NO NO/YES Reset to factory
F11 Error Log Lists up to six
codes, in order
1: ; 2: ;3:;4: ;5: ;6:
1=Newest/6=Oldest
LAST six errors only
Newest=first
Oldest=last
See Error Code
Chart for references
F12 Erase Error Log NO +
Toggle +/-
YES or NO
FACTORY USE ONLY.
DO NOT RESET
F13 Service Phone # Service
F15 Override Rt BBS NO NO/YES
Toggle +/-
YES or NO
Disables brew
basket sensor
F17 Override Rt BBL NO NO/YES
Toggle +/-
YES or NO
Disables brew
basket lock