Lelit PL92T Service manual

Extended guide
PL92T PL92T-AUS PL92T-AS PL92T-120
230 V
50 Hz
240 V
50 Hz
220 V
50/60 Hz
120 V
60 Hz
E+F I G B
EXTRA
content

2
Elizabeth - PL92T*
THANK YOU FOR CHOOSING
A LELIT PRODUCT
Register your product on
care.lelit.com
To get the most of your coffee machine PL92T
visit our LELIT YouTube channel for insights,
tutorials, tips and tricks.
Save the box and all
the packaging material!
LELIT has studied the external and internal
packaging of your coffee machine to help you re-use
it in case of maintenance or repair need.

3
Extended guide
Index
1. Main specications 4
2. Product overview 6
3. Factory settings 6
4. Equipment 7
5. Packing 8
6. First start-up 8
7. How to install the water softener lter 9
8. Espresso and coffee 10
9. Steam and hot water 11
10. Stand-by mode 12
11. Software features 13
12. LCC Technical menu 17
13. The art of espresso coffee 22
14. Limestone prevention 26
15. Daily cleaning 26
16. Weekly cleaning 27
17. Annual cleaning 28
18. Most common problems 29
19. Warranty terms 32

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Elizabeth - PL92T*
1. Main specifications
User Friendly
This machine allows anyone
to make a coffee as good as
it tastes at a café thanks to
the 3-button interface and the
LCC (LELIT Control Center).
Dual boiler
This machine is equipped with
two boilers: one for steam
and hot water and made in
stainless steel (316L); one for
coffee and made in brass.
Cool touch wand
This wand allows you to perfect
your technique to master the
most complex latte art.
Delivery spout
A delivery spout that can be
used for both one or two cups
and that allows the user to
see the coffee cream on its
way towards the cup.
Brushed stainless
steel
Its brushed stainless steel
appliance body and its
details make it a wonderful
piece of design even when
the machine is switched
off. The VIP line represents
the perfect union between
aesthetics and functionality,
everything in a very small
space.
Programmable
pre-infusion
To moisten the coffee for a
few seconds before the start
of the actual brewing stage.
This compacts the coffee
powder and improves the
ow of the espresso.
ATTENTION:
Read the safety notes carefully before using this
product.

5
Extended guide
PIC. 2
15
8
9
10
12
14
11
LCC (LELIT Control Center)
is the brain of our coffee machines. It allows to control
the machine functions and adjust the parameters
by means of an OLED display.
13
13
6
3
4
5
7
1
2

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Elizabeth - PL92T*
2. Product overview
3. Factory settings
1. Coffee delivery button 1 (with
pre-infusion 1)
2. Coffee delivery button 2 (with
pre-infusion 2)
3. ON/OFF main switch
4. Hot water dispensing button
5. Fixed hot water wand
6. Coffee brewing group
7. Wire grate for drip tray
8. Water tank cover
9. Water tank
10. Cup warmer
11. Back-lit manometer for coffee
extraction
12. Steam dispensing knob
13. LCC (LELIT Control Center)
14. Multidirectional, anti-burn steam
wand
15. Removable water tray
Stand by
ON
Brewing time
OFF
Water softener lter
Not inserted
1Pre-infusion coffee button 1
3 sec
Coffee temperature
95°C
2Pre-infusion coffee button 2
6 sec
Hot water temperature
95°C
Automatic purge
5 sec
Steam temperature
135°C

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Extended guide
4. Equipment
A. 1 dose lter (7-9 g)
B. 2 doses PLUS
lter (14-18 g), IMS
C. Blind lter for backushing
D. Plastic tamper
E. Cup rack
F. First cleaning kit (with 3
detergent powder single-dose
bags and 1 single-dose bottle)
G. LELIT 58 2-ways lterholder
H. LELIT 35 l water softener lter
I. Plastic spoon for coffee powder
J. Power cord
H
J
A
B
C
D
F
I
G
E
Discover all the barista tools and the necessary elements to make
an excellent coffee. Visit our website lelit.com

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Elizabeth - PL92T*
5. Packing
The packaging of your LELIT coffee machine has been studied and produced
to be re-used. Use the original box and all the packaging elements in case you
need to send the machine back to your reseller or to an authorized service
centre, for ordinary or extraordinary maintenance. To ensure the integrity of the
product, use also a rigid over-packing box because only the box containing the
product is not enough to protect it from eventual transport damages.
6. First start-up
6.1 6.2 6.3
ON
Place the machine on a solid, at and dry surface and make sure the appliance
is stable.
Remove the carton protections and the equipment box placed under the brew-
ing group. Extract the power cord (J) and the cup rack raiser (E) from inside the
water drip tray (15).
Fill the water tank (9) with room temperature water up to the indicated maximum
level and insert it in its seating (Pic 6.1).
Use the power cord (J) to connect the machine to the electrical mains and turn
ON the machine by pressing the ON/OFF (3) switch (Pic 6.2). The LCC display
(13) shows the LELIT logo and the software version, the 3 buttons (1-2-4) and
the manometer light up for a few seconds.
If the water tank (9), full of water, is correctly inserted in its seating, the machine
proceeds with the lling of the hydraulic circuit. If the water tank (9) is not correctly
inserted in its seating, the LCC display shows the "empty tank" symbol (Pic. 6.3).

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Extended guide
Note. Only for the rst start-up, the machine will automatically ll the boiler
with water; during this operation some water will ow from the brewing group for
nearly 1 minute and the LELIT logo will ash on the LCC display. Let the system
nish the operation.
The hydraulic circuit needs maximum 4 minutes from the 1st turn on to get lled
with water.
Now the hydraulic circuit is lled up. The machine can start heating the water to reach
the pre-set values. The LCC display (13) ashes the value of the water temperature
in the coffee boiler that increases up to reach the set temperature value.
The machine is ready for use when the bar with the temperature on the LCC
display (13) is complete and "OK" appears.
7. How to install the water softener
filter
7.1 7.2 7.3
min
3
Before installing the softener lter (H) in the water tank (9), immerse the softener
lter in a jug full of water for about 3 minutes, to eliminate the air inside the lter
that may cause a machine malfunction (Pic 7.1).
Take out the water charge tube from the water tank (9) and remove the small
plastic lter. Insert the softener lter (H) instead of the small plastic lter and x
the softener lter well (Pic. 7.2).
Insert the softener lter (H) xed at the end of the water charge tube into the
water tank (9) (Pic 7.3).

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Elizabeth - PL92T*
8. Espresso and coffee
8.1 8.2 8.3
1
2
O
K
8
12
Choose your coffee lter, insert it into the lterholder (G) and ll it with the
adequate quantity of ground coffee. Use the tamper (D) to press the coffee powder
in the lterholder (G). Fix the lterholder (G) into the brewing group (6) and make
sure the handle is aligned with the padlock symbol present on the group (Pic 8.1).
Note. With a new machine, it is recommended to moisten the edge of the
lter with some water to help reaching the correct position. After a short use, this
position can be reached without effort.
Place the cup/s under the lterholder and press the coffee button (1 or 2) to start
the extraction. During the extraction phase, the LCC display shows the coffee
icon and the chronometer that indicates the extraction time (Pic. 8.2). For an
optimal result, during the extraction the manometer (11) should reach the green
zone (Pic 8.3). Push the previously pressed button (1 or 2) to stop the extraction.
Remember to take out the lterholder (G) and empty the lter after every coffee
extraction.
Note. If the coffee extraction time has been programmed by entering the
machine parameters menu for the coffee buttons (1 or 2), the coffee delivery stops
when the set time is reached automatically. To change the parameters read Chapter 11.
Note. A short purge cycle can be performed before each coffee extraction
by pressing the coffee buttons (1 and 2) at the same time.
Attention. Do not remove or loosen the lterholder (G) from the brewing
group (6) during the coffee extraction to avoid burn risks caused by hot water leaks.

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Extended guide
9. Steam and hot water
9.1 Open the steam dispensing knob (12) by turning it
anticlockwise, with the steam wand (14) pointed on
the drip tray, to drain the small quantity of water.
When the steam comes out close the knob.
Place the milk jug (code PLA301S-M-L, not included),
lled up to the beginning of the spout, under the
steam wand (14) and open again the steam knob
(12) (Pic 9.1).
Once you have obtained the desired result, turn the
knob (12) clockwise to stop the function. Let the
steam out for few seconds to clean the tip.
9.2 To activate the xed wand (5) and dispense hot
water press the hot water button (4). Press the
button (4) again to stop the function (Pic 9.2).
Note. The steam wand has a 2-holes tip, suitable
for daily and normal usage. A 4-holes tip is available
as spare, please contact your reseller for more details.

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Elizabeth - PL92T*
10. Stand-by mode
10.1 10.2 10.3
30
min
OFF
1
After 30 minutes of inactivity, the machine will go automatically in stand-by
mode. The LCC display (13) and the heating elements are disabled and the
coffee delivery button (1) ashes each 3 seconds (Pic 10.1).
To re-start the machine, press the coffee button (1) (Pic 10.2).
Wait until the LCC display (13) shows "OK" before using the machine again
(Pic 10.3).
The Stand-by is normed by EU directives for this type of coffee machine, but if
you want, you can disable this function.
Disable or enable Stand-by function
1Turn off the machine
2
Switch the machine on while
holding in: coffee delivery
button 1, coffee delivery button
2 and the water button.
3
If the water button LED is
ashing the stand-by function is
enabled otherwise is disabled.

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Extended guide
11. Software features
Economy mode
1
You can easily enable and disable the steam boiler by
pressing just one button. The LCC display shows that the
machine is ready for use.
2
Push for more than 3 seconds. The (E) on the LCC
display conrms that the machine is in "economy mode".
Repeat the procedure and the LCC display shows that
the machine is using the steam boiler again.
Reserve mode
1
The reserve mode is in action if the water ends during
the shot. This mode allows to complete the extraction,
avoiding the waste of coffee. The LCC display shows a
tap icon next to the number of the brewing time.
2
The machine is programmed to nish the brewing
process. When the supply ends, the LCC display shows
the icon meaning "lack of water".
Dispensing time
1
At the end of the supply, shot time will be visible on the
LCC display for 20 seconds.
Maximum dispensing time: 99s
Steam temperature
1
Steam temperature can be set between 115°C and
145°C. For advanced users, there is the opportunity of
decreasing steam temperature to 115 degrees for pre-
infusion with low pressure.

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Elizabeth - PL92T*
The automatic purge is a cooling ush that allows to have the right extraction
temperature. This function could be used before the brewing phase after having
activated it.
Automatic purge
1To use this function press together both coffee
dispensing buttons.
2The LCC display shows a drop icon and from the group
you will see water coming out for the programmed time.

15
Extended guide
The LELIT Elizabeth can have shot times programmed to either of the two
buttons. This allows the coffee shot to end when the programmed time has been
reached.
Automatic shot time
1Press 3 times for button 1.
1a Press 4 times for button 2.
2
Press once to edit the state
of programmed dose (activate or
deactivate).
3Press again and the LCC
starts ashing.
4Use and to increase or
decrease shot timer.
5
Wait till it stops ashing and
return to home screen.
Any pre-infusion times are
included in this time.

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Elizabeth - PL92T*
Pre-infusion
1Press 5 times for pre-inf 1.
1a Press 6 times for pre-inf 2.
2Press once to edit the state of
pre-infusion
3Press again and the LCC
starts ashing
4Use and to increase or
decrease pre-infusion timer.
5Wait till it stops ashing and
return to home screen.
The LELIT Elizabeth can have the pre-infusion programmed for each of the two
coffee dispensing buttons. It is the act of pre-wetting the bed of ground coffee
inside a lterholder before starting the brewing process.

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Extended guide
12. LCC Technical menu
The technical menu offers extra customization settings for the more expert users.
Please remember that these settings require time before seeing results in the
cup of coffee, however if you think that you changed your machines values too
much, all the settings can be restored with the following procedure:
1. With the machine turned OFF
Hold pressed both and buttons
2. Switch the machine ON
3. Wait until the LCC shows KPc value
Note. Keep pressed both buttons until KPc value is shown on the display
to be sure that you have entered the technical menu and not resetting your
machine.
Note. If you do not press the button, you have a factory reset of the LCC
and will have to re-enter and/or check all parameters.

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Elizabeth - PL92T*
12.1. PID
PID stands for Proportional-Integral-Derivative.
Temperature is extremely important to brewing coffee. While different brew
methods and roasts demand different temperature, stability is key.
PID controllers help maintaining stability. All in all, a machine with PID control
monitors itself to ensure temperature stability and control.
Atraditional thermostat tends to hit a desired temperature, then turn off the heating
element as the temperature rises above its target. Then it will kick back on as
the temperature falls below the set value. These results in uneven temperatures
can lead in inconsistent shot quality in a coffee machine, like Elizabeth. PID
controllers use the PID algorithm to keep your machine at the proper brew
temperature. This also means you can directly control the temperature of the
machine. The temperature detected inside the boilers is the one visible on the
display and it is subjected to all the variations happening inside the boilers.
Note. PID is an algorithm that regulates the boiler temperature according to
the temperature detected by the probe (NTC) located inside the boiler. PL92T
having two boilers has therefore two working PID: the letter c at the end of
the parameter (e.g. KPc) refers to coffee boiler; the letter s at the end of the
parameter (e.g. KPs) refers to steam boiler.

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Extended guide
12.1.1. Functions of the PID values
T
time
The default regulation of the temperature is managed according to an algorithm
called PID. The constants that determine the thermoregulation are called:
• Kp: proportional constant
• Ki: integrative constant
• Kd: derivative constant
• The proportional range is the range, within which the temperature is set by
PID. Outside it, the heating element is regulated by ON/OFF.
The three constants and the proportional range have to be adapted to the coffee
machine, depending on the heating element power, the boiler dimensions, the
uidic and its dispersion.
Note. This regulation usually requires a bit of expertise and time to get the
best possible result. Let the machine adjust to the new settings for a few days
before changing them again.
Note. If you want to go back to factory settings, reset your machine.
Note. After a reset procedure, when the machine is switched back on,
you have to repeat the customization of the coffee and steam boiler. Remember
that after resetting your machine, water will ush out of the group head for nearly
1 minute.

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Elizabeth - PL92T*
12.2. Steam or Bloom Pre-Infusion
For more advanced user, pre-infusion can be done with the pump (bloom
pre-infusion) or in combination with the boiler (steam pre-infusion).
This means that LELIT Elizabeth can perform steam pressure pre-infusion by
setting BLS1 and BLS2 and bloom pre-infusion by setting BLP1 and BLP2. Each
setting works on a specic coffee button in order to achieve the best possible
result; hence, if BLS1 and BLP1 are changed, the results will be visible only
when coffee button 1 is pressed. Same goes for BLS2 and BLP2.
Please mind that if the solenoid valve is enabled (EVS ON), then both types of
pre-infusion are available.
• If the solenoid valve is set to 0, the machine will automatically disable steam
pre-infusion. Additionally, regardless of the ON/OFF state or temperature of the
steam boiler, the machine will only perform bloom pre-infusion.
• If the solenoid valve is set to 1 and the steam boiler is ON and above 115°C,
the machine will automatically select steam pre-infusion.
To reach the rst technical pre-infusion value, you need to press the button 14
times. To start editing the technical pre-infusion values, press the button and
then edit them as usual.
PUMP
3s
BOILER
4s BREWING
BOILER
7s BREWING
PUMP
3s BREWING
BREWINGPRE-INF
Note. The values in the chart are only for example purposes.
SCENARIO 1