La San Marco 95 Series Use And Maintenance Manual

USO E MANUTENZIONE

MACCHINE CAFFÈ ESPRESSO - SERIE 95

USE AND MAINTENANCE MANUAL

ESPRESSO COFFEE MACHINES - 95 SERIES

MANUEL D’INSTRUCTIONS POUR L’EMPLOI ET L’ENTRETIEN

MACHINES À CAFÉ EXPRESS - SERIE 95

BEDIENUNGS- UND WARTUNGSANLEITUNG

ESPRESSOMASCHINEN - SERIE 95

IT

GB

FR

DE

MANUAL CODE 7770.009
Revision 04/2006

29

CONTENTS

ENGLISH

RECOMMENDATIONS (reference, use, warranty) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30

TECHNICAL CHARACTERISTICS OF DIFFERENT MODELS . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31

MACHINE CHARACTERISTICS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32

GENERAL HYDRAULIC DIAGRAM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33

WATER SUPPLY DIAGRAM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34

LEGEND . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35

FOR THE INSTALLER

INSTALLATION OF MACHINE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36

Equipment in machine kit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36

Prearrangement of water supply . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36

Installation of water system . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36

Drainage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36

Electrical connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37

Gas fired Boiler (optional) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38

Charging the boiler . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39

Calibration of pump pressure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39

Calibration of water pressure in the boiler . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39

FOR THE USER

MACHINE OPERATING INSTRUCTIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41

Heating the water in the boiler . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41

Steam collection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41

Drawing warm water (on all PRACTICAL, SPRINT and semiautomatic models) . . . . . . . . . . . . . . . . . . . . . 41

Coffee serving (on all semiautomatic models) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41

Drawing hot water (on all automatic models) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42

Serving coffee (on all automatic models) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42

Emergency operation (for 95-22 automatic models) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42

ADDITIONAL NOTES FOR 95-26 and 95-36 MODELS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 43

ADDITIONAL NOTES FOR 95-23 and 95-33 MODELS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 46

ADDITIONAL NOTES FOR 95-31, 95-32, 95-33 and 95-36 MODELS . . . . . . . . . . . . . . . . . . . . . . . . . . 49

OPTIONS: Gas heating of boiler . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 49

Electric cup warmer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 49

Water softener . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 49

ROUTINE MAINTENANCE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 50

IDLE PERIODS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 50

EMERGENCY SITUATIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 51

ALARM SIGNALS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 51

MAIN DEFECTS CAUSED BY THE INCORRECT USE OF THE EQUIPMENT . . . . . . . . . . . . . . . 54

FOR THE PROGRAMMER

PROGRAMMING THE DOSES FOR ESPRESSO COFFEE AND FOR HOT WATER . . . . . . . . . . . . . . . . . . 52

PROGRAMMING THE BOILER WORKING TEMPERATURE AND PRESSURE . . . . . . . . . . . . . . . . . . . 53

ENGLISH

RECOMMENDATIONS

30

REFERENCE

This manual provides machine users and routine maintenance personnel with all the information necessary for a safe and
efficient operation of the machine.

This manual is an integral part of the machine and contains all the information required for its operation and maintenance.

The user is urged to read this manual carefully before installing and starting the machine.
This manual must be kept for the duration of the machine and must be transferred to any other subsequent user or owner of the
machine.
The manual or a copy of the same must always be kept in a place protected from heat, moisture or corrosive agents near the
machine, where it can be consulted by the operator.

USE

This machine is designed for serving espresso coffee, for the production of hot water for beverages or for the indirect heating
of beverages.
The machine must not be charged with alcoholic substances.
Any improper use of the machine and disregard of the recommendations of this manual releases the manufacturer from any
conditions of warranty and from liability for any resulting damage or injuries.
The machine must only be operated by personnel well acquainted with its particular characteristics and instructed in the main
safety procedures.
All accident prevention procedures and any other work safety and health regulation must always be complied with.
We urge the user to contact the Manufacturer for any information, spare parts or accessories. However, the user must not carry
out any operations or procedures that are not clearly understood.

Any arbitrary change on the machine and failure to carry out the scheduled maintenance will release the Manufacturer from
any liability for any resulting damages.

To ensure the correct use of the machine, the user is urged to follow some basic rules of behavior, such as:
the operation and use of the machine is reserved exclusively for authorized personnel, who must have read this manual and
become acquainted with its contents;
operating personnel must wear suitable clothing, as required by the safety legislation of the Country where the machine is use;
the machine must not be installed in places where cleaning is carried out with jets of water;
make sure that the workplace is clean and in order and that all keys and accessories are in their proper place. Do not carry out
any cleaning or maintenance while the machine is connected to the power supply.
The machine must never be used with the fixed and/or mobile guards removed or with the safety devices cut off.
The safety devices must absolutely never be removed or tampered with.
Any servicing on the water system must only be carried out by qualified service personnel and only after having released the

pressure in the boiler (see ROUTINE MAINTENANCE).

Close compliance with the scheduled maintenance procedures indicated in this manual is necessary both to work safely and to
maintain the efficiency of the machine.
Any repairs on the machine must only be carried out by the manufacturer or by an authorized LA SAN MARCO service center.
For your safety, always request original LA SAN MARCO spare parts. The use of any other than original spare parts voids the
guarantee and the conformity certifications provided with the machine.

For a better product quality, we recommend that the water in the boiler and in the tubing be flushed daily when
starting the machine.
The water should also be changed if the machine remains idle for several hours during the day by flushing it out
through the hot water valve and the coffee serving units.

For a proper disposal of the machine when it is to be discarded, contact the firms specialized in the sorted collection and dis­posal of solid waste.

WARRANTY

The warranty is voided if:

- the instructions in this manual are not complied with

- the scheduled maintenance procedures are not followed

- repairs are carried out by unauthorized personnel

- the machine is used for any other than its intended purposes

- the original parts are replaced with parts from different manufacturers.
Inspect the machine upon delivery to check for any damage suffered during transportation.
Any complaints must be sent to LA SAN MARCO in writing within 8 days following the reception of the machine.

IMPORTANT
The user is urged to keep all the technical documentation, including the wiring diagram, enclosed with this manual.
LA SAN MARCO reserves the right to apply any technical changes it may consider necessary on the machine, without
advance notice.

ENGLISH

TECHNICAL CHARACTERISTICS

OF DIFFERENT MODELS

31

• The machines are prearranged for the
following voltages:
400V - 3N three-phase ( elements)
230V - 3 three-phase ( elements)
230V single-phase

• Only PRACTICAL models
110/230V single phase.

• Pump incorporated in PRACTICAL
and SPRINT models.
External pump on other models.

Optional:

• Electrical cup warmer for all models
(except for PRACTICAL and
SPRINT).

• Water softener for all models.

• Gas heating system only for 95-21
95-22 95-31 95-32 models.

SEMIAUTOMATICAUTOMATIC

MODEL

NO.

OF UNITS

BOILER

CAPACITY

(liters)

MONO. THREE PH.

PUMP

CUP
WARMER
(Optional)

WEIGHT

(kg)

DIMENS.

A

(mm)

FUNCTIONAL CHARACTERISTICSPOWER CONNECTION

POWER INPUT (W)

95-PRACT-S 1 2,5 2000 – 275 – 41 360

95-PRACT-E 1 2,5 2000 – 275 – 42 360

95-SPRINT-E 2 4,9 3000 4500 275 – 56 605

95-23 2 12

3500

4500

3500

4500

300 100 60 695

95-33 3 19

5500

7000

5500

7000

300 125 74 935

95-SPRINT-S 2 4,9 3000 4500 275 – 56 605

2 12

3500

4500

3500

4500

300 100 56 695

95-21

3 19

5500

7000

5500

7000

300 125 70 935

95-31

4 25 7000

7000

9000

300 150 90 1170

2 12

3500

4500

3500

4500

300 100 60 695

95-22

3 19

5500

7000

5500

7000

300 125 74 935

95-32

4 25 7000

7000

9000

300 150 94 1170

2 12

3500

4500

3500

4500

300 100 60 695

95-26

3 19

5500

7000

5500

7000

300 125 74 935

95-36

4 25 7000

7000

9000

300 150 94 1170

1 • Coffee served with push button start and

stop.

• Hot water and steam supplied on all models.

• Automatic level control (automatic water
charging into boiler) on all models.

2 • 95-21: Normal version.

• 95-31: Version with stabilized temperature.

3 • Electronic metering of coffee servings with

possibility of memorizing 6 different doses
for each unit.

• Hot water and steam serving on all models,
with possibility (except on PRACT ICAL
an d SP RI NT m ode ls ) of mem or izi ng 2
different hot water doses.

• Automatic level control (automatic charging
of water into boiler) on all models.

• Semiautomatic operation (up to a max. of 2
units) in case of failure of electronic system
(except for PRACTICAL/SPRINT models).

4 • 95-22: Normal version.

• 95-32: Version with stabilized temperature.

5 • Same as point 3, but with prearrangement

fo r co nne cti on w it h ce ntr ali ze d wa i te r
management system (Walla, Hartwall).

6 • 95-23: Normal version.

• 95-33: Version with stabilized temperature.

7 • Same as point 3, plus display with indication

of boiler pressure/temperature and number
of coffees served for each individual dose.

• External programming of operating tempera­tures.

• Po ssi bil ity of pro gra mmi ng au to m at i c
starting and stopping of machine.

• Display with indication of: time of day and
day of week. Alarm with light bar (green,
ye llo w, red ) for r eg e ne rat ion of wate r
softener.

8 • 95-26: Normal version.

• 95-36: Version with stabilized temperature.

MACHINE CHARACTERISTICS

32

AUTOMATIC MOD.

.

SEMIAUTOMATIC MOD.

ENGLISH

GENERAL HYDRAULIC DIAGRAM

33

ENGLISH

Version with stabilized temperature

Normal version

WATER SUPPLY DIAGRAM

34

ENGLISH

Connection for models with

internal pump

Connection for models with

external pump

LEGEND

35

ENGLISH

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

17a

18

19

20

21

22

23

24

25

26

27

28

29

30

31

32

33

34

35

36

37

38

39

40

41

42

43

44a

44b

Grounds collecting plate with grill

Automatic level control valve

Automatic level control valve

Boiler discharge valve

Displacement meter valve

Displacement meter valve

Displacement meters

Grounds collecting tray

Non-return valve

Non-return and safety valve

Solenoid for aut. level control with filter

3/8” nipple (machine water supply)

3/8” nipple (mains water tap)

3/8” nut

Mains water supply valve

Mains water supply tube

3/8” nipple (pump suction)

Nipple 3/8” (pump delivery)

Machine feeding tube

Water softener feeding tube

Water drainage tube

Pump

Pump pressure adjusting screw

Upper water softener valve

Lower water softener valve

Pump feeding tube

Water softener

Button valve

Button for valve

Steam valve

Main switch

Visual level indicator

Manual serving push button

Continuous serving push button

Selection button for single strong coffee

Selection button for single normal coffee

Selection button for single weak coffee

Selection button for double strong coffee

Selection button for double normal coffee

Selection button for double weak coffee

Continuous water serving button

Automatic water serving button

Automatic water serving button

Push button (beside display)

Boiler pressure gauge

Pump pressure gauge

45

46

47

48

49

50

51

52

53

54

55

56

57

58

59

60

61

62

63

64

65

73

74

75

76

77

78

79

80

81

82

83

84

85

86

87

88

91

92

A

B

C

D

E

Pressure switch

Pressure adjusting screw

Side

Display

Gas valve

Gas burner

Gas safety push button

Gas thermal probe

Automatic gas ignition button

Flame inspection hole

Air-gas mixture valve

Gas nozzle

Flame adjusting screw

Flame adjusting screw

Hot water serving valve

Electric cup-warmer button

Hot water serving tube

Automatic serving off switch

1st unit manual serving switch

2nd unit manual serving switch

Displacement meters indicator

Fuses

Electronic control unit

Safety thermostat

Boiler

Electric heating elements

Heat exchanger

Vacuum valve

Safety valve

Water temperature probe

Water level probe

Thermostat probe

Hot water serving solenoid

Coffee serving solenoid

Filter cup

Drops collecting tray

Infusing device

Push-button and display panel

Cooling tube

Lever for valve 23

Drain tube

Lever for valve 24

Drain tube

Water softener lid opening knob

36

ENGLISH

INSTALLATION OF MACHINE

F O R T H E I N S T A L L E R

The machine is delivered packed. After having removed the packing, make sure that the machine is complete and in good
condition. If in doubt, contact the qualified and authorized La San Marco S.p.A. personnel.
Dispose the packing material through the relative waste collecting centers, separating wood from styrofoam and nylon, as required
by the relative laws in the country where the machine is to be used. This material may be hazardous and must be kept out of reach
of children. The machine must be installed on a perfectly horizontal plane that is sufficiently sturdy to support the weight of the
machine; a sufficient clearance should be allowed around the machine to dissipate the heat generated during its operation.

EQUIPMENT IN MACHINE KIT

The machine packing contains the equipment kit, which is made up of:

- filter cups with filter retaining ring;

- filters and spouts for single and double doses;

- blind filter;

- coffee press;

- rubber drain hose and steel coil;

- rubber feeding hoses made of food-friendly materials, with stainless-steel plaiting;

- 3/8” nipples for hose connection to mains water supply:

- brush for cleaning under the cups

The standard machine includes the pump motor, which is supplied in a separate packing. On request, the manual or automatic
water softener is provided as an optional.

Before connecting the water softener to the machine, the user is urged to wash the resins contained in the water softener as
follows:

1. Using the 900 mm stainless-steel plaited hose 19, connect the main valve 15 to the valve 23 feeding the water softener 26.

2. Connect the valve 24 of the water softener 26 to the clean water drain.

3. Open the valves 23 and 24 and let water run through the water softener for about 15 minutes.
The water softener is considered an essential item of equipment for the proper operation of the machine. If the user has not
provided any water softening system, he should provide one to guarantee the efficiency of the machine.

PREARRANGEMENT OF WATER SUPPLY

Water supply

Lead the water supply tube, with a minimum diameter of 3/8”, to the machine and install a check valve, preferably of ball type
of 3/8” diameter, which allows a fast opening and closing operation.

Drainage

Provide for an inspectable drainage pit on the floor, connected with the sink drainage line and suitable for receiving the
machine gravity drainage tube.
The drainage tube must be placed so as to have a free flow, without the possibility of clogging due to buildup of grounds
during the operation of the machine.

INSTALLATION OF WATER SYSTEM

a) Install the 3/8” nipple 13 on the main water supply valve 15.
b) Using the 900-mm-long stainless-steel plaited rubber hose 19, connect the main valve 15 to the valve 23 feeding the water

softener 26.

c) Using the 600-mm-long stainless-steel plaited rubber hose 25, connect the nipple 17 (pump suction 21) to the valve 24

feeding the water softener 26.

d) Using the 1200-mm-long stainless-steel plaited rubber hose 18, connect the nipple 17a (pump delivery 21) to the hose

holder 12 on the machine supply line.

Note: in the Practical and Sprint models, the rubber hose 18 (2500 mm long) connects the water softener valve 24 directly with
the pump suction 21 inside the machine. To install the water softener, follow also the instructions provided with the softener.

DRAINAGE

Join the drain tube 20 to the grounds collecting tray 8, and connect it to the water drainage system.