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18

EN

7. Maintenance and periodic cleaning operations

Cleaning groups and drain wells

Insert  the  blind  filter  into  portafilter 

and  put  the  correct  amount  of  espresso 

cleaning product (following the product’s 

instructions)    into  the  filter,  engage  the 

portafilter  into  the  group  you  want  to 

clean.

• Press the brewing button for said group,

as  if  you  were  making  a  regular  cup  of

coffee. Stop the water after about 15-20

seconds.

• Start and stop the group several times

until you notice clear water being released

instead of soapy water when you remove

the portafilter.

Do not remove the portafilter when

group is actually brewing water.

• Rinse  the  group  using  a  normal  filter

in  the  portafilter,  by  running  hot  water

through it several times.

Cleaning filters and filter holders

With  daily  cleaning  of  the  stainless  steel 

filters  and  portafilters  it  is  sufficient  to 

clean  them  with  water  and  a  cloth  or 

appropriate  brush.    Otherwise,  using  an 

espresso  cleaning  product,  following  the 

product’s  instructions  put  the  correct 

dose  in about 1/2 a litre of water inside a 

heat-resistant container and heat.

• If  using  stainless  steel  portafilters

with  snap-on  spouts  remove  the  spout.

Immerge filters and metallic parts of por-

tafilters (not handles) in the hot solution

and leave them submerged for about 30

minutes.

• Rinse thoroughly with clean water and

run  hot  water  through  the  group  sev-

eral  times  with  the  filter  and  portafilter

engaged.

• Make  one  cup  of  coffee  in  order  to

remove any unpleasant flavour.

Cleaning the drain collector

Remove  the  drain  tray  grill  every  night, 

pull  out  the  water  drain  collector  and 

clean it thoroughly. Also inspect and clean 

the  drain  well  (part  19)  at  least  twice  a 

week,  and  remove  any  leftover  grounds 

with a tablespoon.

Cleaning the body

Wipe  the  stainless  steel  surfaces  with 

a  soft  cloth  in  the  direction  of  the  glaz-

ing marks, if any. Do not use any alcohol 

or  solvents  whatsoever  on  painted  or 

imprinted  parts  in  order  not  to  damage 

them.

Cleaning the hot water and steam nozzles

Steam  nozzles  must  be  cleaned  immedi-

ately after use with a damp cloth and by 

producing  a  short  burst  of  steam  (being 

careful  to  avoid  burns)  so  as  to  pre-

vent the formation of deposits inside the 

nozzles  themselves,  which  may  alter  the 

flavour of other drinks to be heated. 

Cleaning the diffuser screens (infusion 

filter)

Due to filter holder discharge operations 

(subsequent to coffee brewing), a certain 

amount  of  coffee  grounds  may  slowly 

build-up  on  and  obstruct,  even  partially, 

the infusion filter. To clean, you must first 

CAUTION

NEVER REMOVE THE FILTER HOLDER WHEN 

WATER IS BEING DELIVERED. THIS OPERATION

CAN BE ExTREMELY DANGEROUS SINCE THE 

HIGH PRESSURE BUILT-UP INSIDE THE BLIND 

FILTER WOULD SPRAY OUT HOT AND 

SLIGHTLY CAUSTIC WATER, 

WHICH MAY CAUSE SEVERE BURNS.

THE COFFEE BOILER CONTAINS WATER AT

ELEVATED TEMPERATURE.  WATER

TEMPERATURE OVER 125°F / 52°C CAN 

CAUSE SEVERE BURNS INSTANTLY OR DEATH

FROM SCALDING.

THE MACHINE MUST BE INSTALLED SO THAT

qUALIFIED TECHNICAL PERSONNEL CAN 

EASILY ACCESS IT FOR MAINTENANCE.

WARNING

CAUTION

THE MACHINE MUST NOT BE DIPPED IN, NOR 

SPLASHED WITH, WATER IN ORDER TO

CLEAN IT. FOR CLEANING OPERATIONS, 

PLEASE FOLLOW THE INSTRUCTIONS LISTED 

BELOW VERY CAREFULLY.

Summary of Contents for Linea

Page 1: ...ne the industry The Linea is the classic La Marzocco machine that has long supported and helped to develop the specialty coffee industry since the 1990s It is a heavy duty workhorse that performs reli...

Page 2: ...39 055 849 1990 page 2 page 4 page 7 page 11 page 16 page 18 page 19 page 21 page 22 1 General Warnings and Safety Specifications 2 Definition of Available Models 3 Installation 4 Machine Operation a...

Page 3: ...nit very carefully Make sure grounding has been done correctly as it represents a fundamental safety requirement and in case of doubt do not hesitate to have qualified personnel check such connection...

Page 4: ...the cup warmer tray with cloths or other items 13 The machine s power supply cable must not be replaced by users as also specified on the rating plate located near the outlet of such cable on the bod...

Page 5: ...ig 2 Front panel of PADDLE model available with 1 2 3 and 4 groups 1 Main Switch 2 Water level sight glass 3 Pressure gauge 4 Coffee groups 5 Coffee brewing control switch 6 Cup warmer switch non UL m...

Page 6: ...3groups 5 0litres 1600or1900Watts 4groups 3 4 3 4litres 1400 1400Watts 2boilersinstalled It consists of a cylindrical tank of varying length according to the number of coffee groups which is made of s...

Page 7: ...quantity of water for one normal espresso coffee a quantity of water for one tall coffee a quantity of water for two normal coffees a quantity of water for two tall coffees The fifth button is used t...

Page 8: ...nsion valve 20 Group cover 21 Bleed screw 22 PID Temperature Controller 23 Switch not provided 24 Plug not provided 25 Connectors Fig 4 THE COFFEE MACHINE MUST BE PLACED IN A HORIZONTAL POSITION ON A...

Page 9: ...ould be placed on a flat counter and must be placed in settings with the following temperatures Minimum room temperature 5 C 41 F Maximum room temperature 32 C 89 F If the machine has been temporarily...

Page 10: ...ter pump motor power cord This is the power supply for the water pump motor The internal electronics will switch the pump motor on when needed 3 core cable with 1 5 mm2 cross section or 3 core AWG 16...

Page 11: ...l be necessary in order to completely saturate the boiler groups assembly to remove the group cover plate part 20 Fig 4 and unscrew the small bolt part 21 called bleed screws a little way so as to all...

Page 12: ...he first installation procedures are finished before proceeding with brewing coffee hot water and steam please follow these steps Engage the portafilters by inserting them into each group brew water t...

Page 13: ...d valve diffuser diffuser coffee brewing spout The wheel is designed in such a way as to rotate freely when water is flowing by it sends 2 signals every complete rotation to the electronic module whic...

Page 14: ...ater flow within the factory set time of the electronic module 2 insufficient water flow through the groups i e onto the coffee powder probably due to a combination of one or more of the following occ...

Page 15: ...ting elements in order to bring the water contained in such boiler up to operating temperature However in this case it is necessary to adjust the expansion valve marked 19A in fig 4 in such a way that...

Page 16: ...value or SV setting value When set ting a parameter its name or its value appears 3 SEL key Used to switch the PV display to from the SV display and select a parameter block and a parameter and regis...

Page 17: ...e press to decrease the value by 1 Press and hold this key to decrease to desired value then wait a few seconds to automatically exit programming function For more detailed information on the potentia...

Page 18: ...u will end up with a fresh cappuccino In order to prevent part of the liquid to be heated from being sucked back into the boiler due to a possible temporary decompression inside the boiler tank which...

Page 19: ...drain collector Remove the drain tray grill every night pull out the water drain collector and clean it thoroughly Also inspect and clean the drain well part 19 at least twice a week and remove any l...

Page 20: ...lve part 19A should start working by discharging a few drops of water in order to prevent such pressure from exceeding 12 bar If the pressure exceeds 12 bar you must adjust the valve by unscrewing the...

Page 21: ...sed in advance Proceed to remove the drain well piping part 19 At this point the machine may be removed from the bar being very careful not to drop it The machine is made out of various mate rials and...

Page 22: ...tallation otherwise warranty is voided If AV Model Check shot volumes Test flowmeter s ohm value ohm value is acceptable if greater than 1 8 K ohm and less than 2 2 K ohm If MP Model Rebuild MP valve...

Page 23: ...EN...

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