Welbilt CREM ONE User manual

ONE
Technical Manual
TM_EN
Part No.: 1964224_02

ONE
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CONTENTS
CONTENTS 2
CONTENTS 4
MANUAL REVISIONS 5
TECHNICAL SPECIFICATIONS 6
· Explanation of descriptions 6
· Machine data 7
· Accessories 7
· Machine description 8
· External dimensions 8
ROUTINE MAINTENANCE SCHEDULE 9
· Service intervals 9
CHANGING THE GROUP GASKET 10
· All versions 10
BUTTONS AND CONTROLS 11
· 1B Version 11
· 2B Version 11
SERVICE PROGRAMMING_1B 12
· User interface 1B 12
· Factory preset 12
· Service menu – Access & browsing 12
· F.01 – Boiler lling time-out alarm 13
· F.02 – Brewing mode 13
· F.03 – Level probe sensitivity 13
· F.04 – Enabling/Disabling shot timer 13
· A.01 – Enabling/Disabling water tank alarms 14
· A.02 – Water tank lling time-out alarm 14
· A.03 – Water tank lling delay 14
· h.02 – Temperature units 15
· Kp, Kd and Ki parameters 15
· Kb – Steam boiler PID control band 15
· E – Display temperature oset 15

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CONTENTS
SERVICE PROGRAMMING_2B 16
· User interface 2B 16
· Stand-by status (OFF) 16
· Factory preset 17
· Service menu – Access & browsing 17
· Programming home screen name 18
· Enabling / Disabling ECO mode 18
· Adjusting ECO mode temperature setting 19
· Programming group boiler dispensing temperature oset 19
· Enabling / disabling Pressure Proling 20
· Adjusting GSP (Gradual Soft Preinfusion) starting pump voltage 20
· Programming lter and service/cleaning alarms 21
· Programming the boiler heating priority 21
· Enabling / disabling water tank alarms 22
· Adjusting water tank lling time-out 23
· Adjusting water tank lling delay 23
· Programming steam boiler level probe sensitivity 24
· Enabling / Disabling installation start-up program 24
· Programming service menu password 25
HYDRAULIC DIAGRAMS 26
· ONE 1B PID VP 26
· ONE 2B PID VP 27
· ONE 2B PID RP-GSP 28
· ONE 2B PID RP-LFPP 29
ELECTRICAL DIAGRAMS 30
· ONE 1B Dual - 240V 30
· ONE 2B Dual - 240V 32
· ONE 2B Dual R-GSP - 240V 34
· ONE 2B Dual R-LFPP - 240V 36
· ONE 1B Dual - 110V 38
· ONE 2B Dual - 110V 40
· ONE 2B Dual R-GSP - 110 42
· ONE 2B Dual R-LFPP - 110 44
MACHINE ALERTS 46
Thank you for choosing an ONE espresso machine. We hope you enjoy it!

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CONTENTS
· Alarms and warnings 46
TROUBLESHOOTING 47
· Machine faults 47
· Brewing faults 47
· Limescale faults 47

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MANUAL REVISIONS
Rev. # Date TSB# Description
01 July 25, 2019 none Release first draft for technical review.
02 Jan 22, 2020 none Update technical specifications and electrical diagrams
03
04
05

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TECHNICAL SPECIFICATIONS
· Explanation of descriptions
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There are ve dierent levels of notication intensity within this manual, as identied by the signal
words DANGER, WARNING, IMPORTANT, NOTE and PRO TIP. The level of risk and importance of the
notication is determined by the following denitions. Always observe the warnings to ensure safety
and prevent potential injury and product damage.
Important:
Alerts against unsafe practices. Observe Important notications to ensure food safety,
prevent possible minor personal injury, or damage to the machine.
WARNING:
Indicates a potentially hazardous situation which, if the WARNING is ignored, could result
in serious injury or even death.
DANGER:
INDICATES AN IMMINENTLY HAZARDOUS SITUATION WHICH, IF NOT AVOIDED,
WILL LIKELY RESULT IN SERIOUS INJURY AND EVEN DEATH.
Note:
Gives additional information which may be helpful during the operation, routine
maintenance, and cleaning of the machine.
Pro Tip:
Gives helpful hints and suggestions from the manufacturer that take the guesswork out of
choosing settings and care intervals.

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TECHNICAL SPECIFICATIONS
· Machine data
· Accessories
ONE 1B Dual ONE 2B Dual ONE 2B Dual
R-GSP
ONE 2B Dual
R-LFPP
EU Compliance codes: EAEB-I91F-13AP EEEB-I91F-13AP EEEB-I91G-13AP EEEB-I94G-13AP
US Compliance codes: EAJB-K91F-13BP EEJB-K91F-13BP EEJB-K91G-13BP EEJB-K94G-13BP
Temperature control: PID control PID control PID control PID control
Dispensing
control system: Manual Group lever Manual Group lever Manual Group lever + GSP
Manual Group lever
+ GSP + LFPP
Steam wand: 1 unit 1 unit 1 unit 1 unit
Hot water outlet: 1 unit 1 unit 1 unit 1 unit
Boiler system: 1 steam boiler
Dual boiler:
1 steam boiler
+ 1 group boiler
Dual boiler:
1 steam boiler
+ 1 group boiler
Dual boiler:
1 steam boiler
+ 1 group boiler
Boiler operating pres-
sure:
0.8 to 1.2 bar /
12-17 psi
0.8 to 1.2 bar /
12-17 psi
0.8 to 1.2 bar /
12-17 psi
0.8 to 1.2 bar /
12-17 psi
Steam boiler volume: 1.7L / 0.45 gal. 1.7L / 0.45 gal. 1.7L / 0.45 gal. 1.7L / 0.45 gal.
Group boiler volume: N/A 1.5L / 0.40 gal. 1.5L / 0.40 gal. 1.5L / 0.40 gal.
EU Power rating: 220-240V~ 50-
60Hz 1800W
220-240V~ 50-
60Hz 1800W
220-240V~ 50-
60Hz 1800W
220-240V~ 50-
60Hz 1800W
US Power rating: 110-127V~ 50-
60Hz 1300W
110-127V~ 50-
60Hz 1300W
110-127V~ 50-
60Hz 1300W
110-127V~ 50-
60Hz 1300W
Water connection: 3/8” Internal thread 3/8” Internal thread 3/8” Internal thread 3/8” Internal thread
Height, width, depth: 420, 300, 458mm /
17, 12, 18in.
420, 300, 458mm /
17, 12, 18in.
420, 300, 458mm /
17, 12, 18in.
420, 311, 458mm /
17, 12, 18in.
Machine weight: 30kg / 66 lb 35kg / 77 lb 35kg / 77 lb 35kg / 77 lb
Ambient noise: < 70 db < 70 db < 70 db < 70 db
For 1B
versions
2-spouts
portalter Filter basket Filter blind Tamper Brush Cleaning tablets
Units 1 unit 1 of each 1 unit 1 unit 1 unit 1 unit
14 gr.
7 gr.
For 2B
versions
2-spouts
portalter
Filter
basket
Filter
blind Tamper Nozzle Steam tap Brush Milk Jar Cleaning tablets
Units 1 unit 1 of each 1 unit 1 unit 1 unit 1 unit 1 unit 1 unit
14 gr.
18 gr.
7 gr.

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TECHNICAL SPECIFICATIONS
· Machine description
· External dimensions
1. Water tank lid
2. Steam knob
3. Power switch
4. Steam wand
5. Brewing group
6. Double pressure gauge
7. Drip tray
8. Drain connection
9. Brewing lever
10. Hot water tap
11. Hot water knob
12. Digital display
(1B version)
13. OLED display
(2B versions)
14. Water connection selector
15. Pressure proling knob
(2B PID R-LFPP)
1 1
11 11
14
13
15
2 2
3 3
4 4
5 5
6 6
7 7
8 8
9 9
10 10
12
1B version 2B version
B1 C
A
D1 / D2*
Dimensions A B1 / B2 C D1 / D2
Length 420mm / 17in. 300mm / 311mm
12in. / 12in.
458mm /
18in.
88mm / 102mm
3in. / 4in,
B2
C
2B PID R-LFPP
1B/2B PID
2B PID R-GSP All models
* Measurement without the middle grid.

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ROUTINE MAINTENANCE SCHEDULE
· Service intervals
Main components Part No.
Months (Cycles)
12 (12500) 24 (25000) 36 (37500) 48 (50000)
Boiler
Vaccum valve 65000210 Check Check Check Replace
Boiler lling solenoid
valve
60000126
(230V)
60000127
(115V)
Replace
Boiler upper raccord 30000200 Check Check
Boiler lower raccord 30000203 Check Check
Safety Valve 65000115 Check Check
Brewing group
Shower 75000010 Replace Replace Replace Replace
Group head gasket 75000081
75000083 Replace Replace Replace Replace
Taps
Steam tap 15000401 Clean Replace
Water tap 15000411 Replace
Motor-pump
Vibration Pump
10036421
(230V)
60000047
(110V)
Replace
Rotary Pump 60000021 Replace
Non return valve 65000011 Replace
Pump Bypass Condor 30400055 Check
Important:
Always conduct the 6 month service intervals without delay to ensure excellent performance
of the machine and to ensure full warranty coverage.

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CHANGING THE GROUP GASKET
· All versions
1. To remove the porta-lter, use
a straight-blade screwdriver to
release the shower by prying
down with medium force.
4. Remove the lter basket(A),
then place the new gasket
and shower(B) into the porta-
lter(C).
2. Remove the shower and
gasket.
5. Preheat the gasket to soften the rubber. A - heat the gasket
for 15 seconds using the water from the hot water outlet, or
B - place the gasket, shower, and porta-lter in hot water for 30
seconds.
3. Remove and discard the old
gasket. Insert the new gasket
(chamfer and EXPOBAR logo
facing up) into the shower.
15s
30s
99OC
> 65 OC
A
A
B B
C
WARNING!
The water from the water tap is very hot! Handle with care to
prevent scalding or burns.

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BUTTONS AND CONTROLS
· 1B Version
· 2B Version
ONE 1B Dual is controlled by a combination of manual control knobs, buttons and a brewing lever
for dispensing.
2 buttons
Digital display
Shot timer
Temperature
This machine features a group display for
monitoring o:
1. Tank empty/rell signal
2. Heating signal
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All ONE 2B verions is controlled by a combination of manual control knobs, buttons and a brewing
lever for dispensing. 2B LFPP is also equiped with a pressure proling knob.
4 buttons
OLED display
Shot timer
Temperature
Volume (2B LFPP)
Heating
Tank empty/rell
This machine features a OLED display for
monitoring o:
Pressure proling knob
(Only 2B LFPP)
Several alarms
1. Eco / 2. Standby mode
3. Barista menu
(Advanced settings)
1
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SERVICE PROGRAMMING_1B
· User interface 1B
· Service menu – Access & browsing
To restore the machine to factory default programming settings, follow the steps below:
1. Turn the machine o at the main power switch.
2. Press and hold K2 + K3 simultaneously while turning the main power switch back on. The
display will show “PrS” and all previously customized settings will be erased and replaced with
the factory settings.
3. Cycle the machine o and on once more at the main power switch.
To access the service programming settings, follow the steps below:
1. Turn the machine o at the main power switch.
2. Press and hold K2 while turning the main power switch back on. The display will show “F.01”
3. Browse through the menu by pressing K2. Access to each setting by pressing K3 and within 5s,
modify the setting by pressing K2 or K3.
4. Cycle the machine o and on to exit from the technical menu.
Note:
After a preset is done, F.02 Brewing mode setting is turned ‘On’ by default. For ONE 1B
models, access to the technical menu and set this setting into ‘O’ to enable the group
switch again.
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· Factory preset
The machine is equipped a programmable interface that allows users to set or adjust the following
features and parameters with guidance from the digital display.
K3K2
L1 L2
Selection buttons K2 - K3

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SERVICE PROGRAMMING_1B
· F.01 – Boiler lling time-out alarm
· F.04 – Enabling/Disabling shot timer
· F.03 – Level probe sensitivity
To change the brewing mode, follow the steps below:
1. Enter the service programming and browse through the menu (see previous instructions).
2. When ‘F.02’ is shown on the display, enter by pressing K3.
3. Within 5s, select with K2 and K3 the brewing mode:
To change the machine’s level probe sensitivity, follow the steps below:
1. Enter the service programming and browse through the menu (see previous instructions).
2. When ‘F.03’ is shown on the display, enter by pressing K3.
3. Within 5s, select with K2 and K3 the level probe sensitivity between ‘MAX’, ‘MED’ and ‘MIN’. ‘MED’
is set by default.
4. After 5s the display will go back the service programming menu.
To enable or disable the brewing shot timer on the group display, follow the steps below:
1. Enter the service programming and browse through the menu (see previous instructions).
2. When ‘F.04’ is shown on the display, enter by pressing K3.
3. Within 5s, select with K2 and K3 the select between ‘On’ or ‘O’.
4. After 5s the display will go back the service programming menu.
a. On (Control mode): For machines with control pad installed.
b. O (Lever mode): For machines with manual group lever.
4. After 5s the display will go back the service programming menu.
Note:
For ONE 1B models, access to the technical menu and set this setting into ‘O’.
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· F.02 – Brewing mode
To change the machine’s steam boiler lling time-out alarm, follow the steps below:
1. Enter the service programming and browse through the menu (see previous instructions).
2. When ‘F.01’ is shown on the display, enter by pressing K3.
3. Within 5s, select with K2 and K3 the boiler lling time out. 120s is set by default.
4. After 5s the display will go back the service programming menu.

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SERVICE PROGRAMMING_1B
· A.01 – Enabling/Disabling water tank alarms
· A.03 – Water tank lling delay
· A.02 – Water tank lling time-out alarm
To enable or disable the water tank alarms, follow the steps below:
1. Enter the service programming and browse through the menu (see previous instructions).
2. When ‘A.01’ is shown on the display, enter by pressing K3.
3. Within 5s, select with K2 and K3 the select between ‘On’ or ‘O’.
4. After 5s the display will go back the service programming menu.
Important: This setting must remain always on and could be disabled for the following working
conditions only:
Machines plumbed to the water mains and with the water inlet selector tap working on ‘TAP’ position.
Water supply selector
TANK
TAP
Note:
If A.01 is disabled, A.02 an A.03 will be disabled as well
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To change the machine’s water tank lling time-out alarm, follow the steps below:
1. Enter the service programming and browse through the menu (see previous instructions).
2. When ‘A.02’ is shown on the display, enter by pressing K3.
3. Within 5s, select with K2 and K3 the water tank lling time out. 20s is set by default.
4. After 5s the display will go back the service programming menu.
Note:
This setting allows the user to nish the current shot when the tank sensor detects that
the levels is lower than the ‘Min’.
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To change the machine’s water tank lling delay, follow the steps below:
1. Enter the service programming and browse through the menu (see previous instructions).
2. When ‘A.03’ is shown on the display, enter by pressing K3.
3. Within 5s, select with K2 and K3 the water tank lling delay. 15s is set by default.
4. After 5s the display will go back the service programming menu.
Note:
This setting allows to rell the tank extra Xs since the tank level sensor detects that the
‘Min’ level has been reached.
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Note:
If A.01 is disabled, A.02 an A.03 will be disabled as well
SERVICE PROGRAMMING_1B
· h.02 – Temperature units
· Kp, Kd and Ki parameters
To adjust the machine’s temperature units, follow the steps below:
1. Enter the service programming and browse through the menu (see previous instructions).
2. When ‘h.02’ is shown on the display, enter by pressing K3.
3. Within 5s, select with K2 and K3 the temperature units: ºC or ºF. ºC is set by default.
4. After 5s the display will go back the service programming menu.
If it is ever necessary to adjust the steam boiler heating algorithm follow the steps below:
1. Enter the service programming and browse through the menu (see previous instructions).
2. When ‘Kp’, ‘Kd’ or ‘Ki’ is shown on the display, enter by pressing K3.
3. Within 5s, select with K2 and K3 to adjust settings up or down.
4. After 5s the display will go back the service programming menu.
· Kb – Steam boiler PID control band
If it is ever necessary to adjust the steam boiler PID control band, follow the steps below:
1. Enter the service programming and browse through the menu (see previous instructions).
2. When ‘Kb’ is shown on the display, enter by pressing K3.
3. Within 5s, select with K2 and K3 to adjust the setting up or down. 5ºC set by default.
4. After 5s the display will go back the service programming menu.
· E – Display temperature oset
To adjust the machine’s display temperature oset, follow the steps below:
1. Enter the service programming and browse through the menu (see previous instructions).
2. When ‘E’ is shown on the display, enter by pressing K3.
3. Within 5s, select with K2 and K3 the oset units.
4. After 5s the display will go back the service programming menu.
Note:
This parameter will aect only the temperature shown on the display. It will be subtracted
from the actual temperature of the steam boiler: Temp. Display = Temp. Boiler - Oset. This
will allow the user to display an approximate extraction temperature on the screen. For
example: Temp. Boiler = 120ºC and Oset = 24ºC, then Temp. Display = 120 - 24 = 96 ° C.
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SERVICE PROGRAMMING_2B
· User interface 2B
The ONE 2B machines are equipped with a programmable ’Barista’ interface that allows users to set
or adjust the following features and parameters with guidance from the digital display:
ECO & Stand-by mode settings (set up energy saving mode timers).
Adjust the steam and group boiler temperatures.
Clock settings (adjust current time and date).
Power o/on (without using the main switch).
GSP (Gradual Soft Preinfusion) settings. (Rotary Pump versions only).
Shot screen time.
Counters (volume of water cycled, service intervals, and number of coees dispensed, etc.).
Temperature units
Date format
USB interface (LFPP version only)
Barista knob resolution (LFPP version only)
K2
K4
Selection buttons K1 - K2 - K3 - K4
K1
K3
· Stand-by status (OFF)
To put the machine on electronic Stand-by mode (OFF), just press (K1) for 5s until message ‘OFF’ is
shown on the display.
On this mode, the heating elements will remain disconnected.
To exit from the Stand by mode, just press (K1) to come back to the main screen.

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SERVICE PROGRAMMING_2B
· Factory preset
To restore the machine to factory default programming settings, follow the steps below:
1. Turn the machine o at the main power switch.
2. Press and hold K1+K2+K3+K4 simultaneously while turning the main power switch back on
a wait 10s. The display will show “Preset done” and all previously customized settings will be
erased and replaced with the factory settings.
3. Cycle the machine o and on once more at the main power switch.
Note for LFPP models: After a preset is done, Barista and Recipe pressure proling modes are
disabled by default. Pressure proling settings must be enabled on the service programming menu.
· Service menu – Access & browsing
To access the service programming settings, follow the steps below:
1. Put the machine on Stand-by (OFF) (see previous instructions).
2. Press K2 (‘T’ icon) to access to the service menu. The password is: 111.
3. Browse through the menu by pressing K2 (->). Access and adjust each setting by pressing K3
and/or K4.
4. Press K1 (home icon) to come back to Stand-by mode (OFF)

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SERVICE PROGRAMMING_2B
· Programming home screen name
To change the machine’s home screen name, follow the steps below:
1. Enter the service programming and browse through the menu (see previous instructions).
2. When home screen name icon (X) is shown on the display, select with K3 and K4 each single
letter and use K2 to accept and pass to the next one.
3. Press K1 (home icon) to come back to Stand-by mode (OFF)
· Enabling / Disabling ECO mode
To change the machine’s home screen name, follow the steps below:
1. Enter the service programming and browse through the menu (see previous instructions).
2. When ECO mode icon (X) is shown on the display, select with K3 and K4 buttons to scroll
between enabled or disabled. Accept with K2.
3. Press K1 (home icon) to come back to Stand-by mode (OFF)
Note:
If ECO mode is disabled, ECO mode temperatures settings on service menu and ECO
mode timers on Barista menu will be disabled.
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SERVICE PROGRAMMING_2B
· Adjusting ECO mode temperature setting
To change the machine’s steam and group boilers ECO mode temperatures setting, follow the steps
below:
1. Enter the service programming and browse through the menu (see previous instructions).
2. When ECO temperature mode icon (X) is shown on the display, select with K3 and K4 buttons
to choose submenus Group boiler or Steam boiler.
3. Adjust the ECO temperature values with K3 and K4 and accept with K2.
4. Press K1 (home icon) to come back to Stand-by mode (OFF)
Note:
The ECO mode allows the machine to reduce its electrical demand by lowing the boilers
temperatures to: 65ºC(149ºF) the group boiler and 105ºC(221ºF) the steam boiler.
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· Programming group boiler dispensing temperature oset
To change the machine’s group boiler temperature oset (the dierence in temperature between the
group boiler and group brewing head), follow the steps below:
1. Enter the service programming and browse through the menu (see previous instructions).
2. When group boiler oset icon (X) is shown on the display, enter with K3.
3. Select with K3 and K4 buttons to adjust the setting up or down. Accept with K2.
4. Press K1 (home icon) to come back to Stand-by mode (OFF)

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SERVICE PROGRAMMING_2B
· Enabling / disabling Pressure Proling
To enable or disable the Pressure Proling menus, follow the steps below:
1. Enter the service programming and browse through the menu (see previous instructions).
2. When Pressure Proling icon (X) is shown on the display, select with K3 and K4 buttons to scroll
between enabled or disabled. Accept with K2.
3. Press K1 (home icon) to come back to Stand-by mode (OFF)
Note:
If Pressure Proling mode is disabled, Pressure Proling setting on Barista menu and
Barista and Recipe modes will be disabled.
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· Adjusting GSP (Gradual Soft Preinfusion) starting pump voltage
To adjust the initial pump voltage of the GSP function, follow the steps below:
1. Enter the service programming and browse through the menu (see previous instructions).
2. When GSP icon (X) is shown on the display, select with K3 and K4 buttons to adjust the initial
pump voltage value. Accept with K2. Default setting: 12V.
3. Press K1 (home icon) to come back to Stand-by mode (OFF)