La San Marco New 105 Touch SEries User Manual (English)

Questions and Answers:

A
Andre BakerAug 22, 2025
Why is there no water flowing from a serving unit on my La San Marco Coffee Maker?
- R
  Renee WalkerAug 22, 2025
  There could be several reasons: * The coffee ground may be too fine or the quantity excessive for the filter used. In this case, adjust the grinding coarseness and/or the quantity of ground coffee. * The water circuit might be clogged. Check the injector, upper circulation pipe, the valve of the group, the water dispenser, and the solenoid valve of the group to ensure they are not clogged. * The solenoid may be defective. Check the solenoid of the unit, its wiring, and the fuse in the electronic control unit.
S
Sabrina LawrenceSep 2, 2025
What causes the autolevel alarm on my La San Marco Coffee Maker?
- S
  smithchristineSep 2, 2025
  An autolevel alarm can be triggered by: * A water circuit of automatic level without water. Check the hydraulic circuit of the autolevel. * The main water supply valve being closed. Check if the on-off valve on the water supply is open. * A faulty autolevel solenoid. Replace the autolevel solenoid.
P
Phillip DaughertyAug 31, 2025
Why is there dark cream in my coffee from La San Marco Coffee Maker?
- G
  Gregory FrostAug 31, 2025
  Dark cream can result from: * Fine grinding: Use coarser grinding. * High pressing pressure: Reduce the pressure. * Large quantity of ground coffee: Decrease the quantity of ground coffee. * Excessive temperature: Adjust valve of the group to a lower number or decrease boiler pressure. * Pump pressure below 9 bar: Increase the pump pressure. * Sprinkler filter on unit clogged: Check and clean with blind filter or replace. * Filter holes clogged: Check and replace filter.
C
Chris MaddoxAug 30, 2025
Why is there light cream in my coffee from La San Marco Coffee Maker?
- T
  Thomas WatersAug 30, 2025
  Light cream can result from: * Coarse grinding: Use finer grinding. * Low pressing pressure: Increase the pressure. * Small quantity of ground coffee: Increase the quantity of ground coffee. * Water temperature below 90°C: Adjust valve of the group to a higher number or increase boiler pressure. * Pump pressure above 9 bar: Decrease the pump pressure. * Sprinkler filter on unit clogged: Check and clean with blind filter or replace. * Filter holes widened: Check and replace filter.
E
Edward HayesAug 28, 2025
What to do if the La San Marco Coffee Maker was started but the water in the boiler does not warm up?
- A
  Ashley TrevinoAug 29, 2025
  If the water isn't heating up, it could be because: * The electric heating element is defective or not connected. Check if the heating element is connected to the power supply. * The main switch is turned to position 1. Ensure the main switch is turned to position 2.
C
Courtney BentleyAug 27, 2025
Why does the La San Marco Coffee Maker machine emit a whistle after serving coffee?
- B
  Becky FinleyAug 27, 2025
  A whistling sound after serving coffee can be caused by: * Faulty operation of the expansion valve. Check the expansion valve and replace it if necessary. Calibrate the valve at 12 bar. * High pump pressure. Check the pump operating pressure and calibrate the pump at 9 bar.
D
Denise CantrellAug 27, 2025
What to do if La San Marco Coffee Maker boiler is full of water and water flows out of the safety valve?
- N
  nholmesAug 27, 2025
  If the boiler is overflowing, it is likely that one of the outflow lines from the boiler or a circuit of the unit has a leak. Check the autolevel circuit, the manual charging button, and the boiler heat exchangers. Replace any worn or damaged parts to stop the leak.
J
Juan WhitneyAug 25, 2025
Why are the programmed servings of espresso coffee not constant on La San Marco Coffee Maker?
- E
  Eric SuttonAug 26, 2025
  Inconsistent espresso servings can occur due to: * Abnormal operation of the electronic control unit or displacement counters. Program the serving doses separately on each dispensing unit. If the problem persists, replace the volumetric meter of the affected dispensing unit. * A leak from the serving unit solenoid valve. If so, replace the solenoid valve of the serving group. * Clogged water dispensers. Check the water dispenser.
K
Kelly HayesAug 23, 2025
What to do if the safety valve tips to release steam on La San Marco Coffee Maker?
- S
  Shannon HebertAug 25, 2025
  The safety valve may release steam due to: * A malfunction in the electrical system where the heating element is always connected. * Pressure increase in the boiler. The safety valve trips at 2 to 2.5 bar. In both cases, check the wiring that feeds the heating element and the pressure switch.

La San Marco New 105 Touch SEries Specifications

General

Brand	La San Marco
Model	New 105 Touch SEries
Category	Coffee Maker
Language	English

Summary

Introduction and Machine Overview

Using the Manual

Instructions for installation, use, and maintenance of the coffee machine.

Warnings

Important safety guidelines and prohibitions for operating the coffee machine.

Starting the Coffee Machine

Basic requirements and steps to start the coffee machine for the first time.

Technical Characteristics

Specifications and power input details for the coffee machine models.

Machine Description and Diagrams

Machine Components Overview

Identifies and illustrates the key parts of the New 105 Touch coffee machine.

General Water System Diagram (New 105 Models)

Illustrates the water flow and components for the New 105 models.

General Water System Diagram (New 105 DTC Models)

Illustrates the water flow and components for the New 105 DTC models.

Water System Components Key

Provides a detailed list and explanation of numbered components in the water system diagrams.

Installation and Setup

Equipment Provided

Lists the items included in the machine's packaging kit.

Water Mains Setup

Instructions for connecting the water supply and drain lines to the machine.

Water Softener (Optional)

Information and precautions regarding the optional water softening system.

Installation of Water System

Steps for connecting the water system with internal or external pumps.

Drain Connection

Instructions for connecting the drainage tube.

Electrical Connection

Guidelines for safely connecting the coffee machine to the electrical mains.

Start-up and Adjustments

Filling the Boiler with Water

Detailed procedure for filling the coffee machine's boiler with water.

Boiler Water Level Probe Adjustment

How to adjust the water level probe in the boiler for water amount control.

Pump Dispensing Pressure Adjustment

Steps to calibrate or adjust the pump's dispensing pressure to 9 bar.

Steam Pressure in Boiler Adjustment

Explanation of how steam pressure is displayed and adjusted via temperature.

Temperature Adjustment of Dispensing Units

How to adjust coffee dispensing temperature using a flow variator.

Notes for NEW 105 DTC Models

Explanation of the cooling system for thermal stability in DTC models.

Hot Water Temperature Adjustment

Procedure to adjust the hot water temperature using a mixer adjustment screw.

Operating Instructions and Programming

Dispensing Espresso Coffee

Step-by-step guide on how to dispense espresso coffee.

Drawing Steam

Instructions on how to use the steam spout for frothing milk or heating liquids.

Drawing Hot Water

How to draw hot water for infusions, tea, and other uses.

Cup Heater (Optional)

How to use the optional cup heater to warm cups.

Programming the New 105 Touch Models

Overview of the control panel keys used for programming.

Dispensing Operations

Detailed process of dispensing coffee using dosage keys and volumetric meters.

Stopping Coffee Dispensing

How to interrupt coffee dispensing while it is in progress.

Prebrewing Function

Explanation of the prebrewing function and its configuration.

Continuous Dispensing Mode

How to dispense coffee continuously using the dedicated key.

Tea Cycle Operation

Procedure for dispensing tea using the dedicated key.

Stopping Tea Dispensing

How to interrupt tea dispensing before completion.

Steam Dispensing

Instructions for dispensing steam and its control.

Level Probe Operation

How the level probe manages boiler water filling.

Boiler Heating and Dose Programming

Coffee Boiler Heating Modes

Explanation of ON/OFF and PID temperature control methods.

PID Adjustment Constants

Details on PID temperature control algorithm and constants.

Programming Coffee Doses

Steps to modify and store volumetric coffee dose quantities.

Programming Tea Doses

Steps to modify and store timed tea dose quantities.

Steam Temperature Simulation Programming

How to modify and store steam temperature for simulation.

Programming the Clock

Procedure to set the current time and day of the week.

Automatic Operation and Technical Settings

Automatic Start/Stop Times Setting

How to program automatic machine starting and stopping times.

Defining a Day Off

How to set a weekly day off for the machine's operation.

Viewing Consumption Counters

How to read machine consumption data like litres, service cycles, and total coffees.

Technical Level Programming Access

Accessing advanced programming parameters and functions.

Language and User Settings

Selecting language, setting user name, and service phone number.

Technical Parameter Configuration

Enabling/disabling doses, continuous dispensing, and other functions.

Advanced Parameter Tuning

Setting prebrewing times, level sensitivity, service cycles, and boiler temperature.

PID Control Parameters

Adjusting PID constants, adjustment range, and boiler filling time-out.

Water Filter Settings

Setting the parameter for water filter litre counting.

Alarms and Safety Devices

Boiler Filling Level Time-Out Alarm

Signalling the alarm when boiler water filling exceeds the set time-out.

Boiler Temperature Alarms

Alarms for boiler temperature probe issues or overheating.

Flow Meter and Filter Alarms

Alarms for volumetric meter issues, filter usage, and maintenance.

Manual Reset Safety Thermostat

Explanation of the safety thermostat and when to call service.

Safety Valve Operation

Explanation of the safety valve's function and activation.

Maintenance and Troubleshooting

Default Preset Data and Factory Reset

Restoring factory default settings and clearing memory.

Power Failure Procedures

How the machine behaves and data is stored during power interruptions.

Routine Maintenance Procedures

Cleaning dispensing units, tray, steam spout, and replacing boiler water.

Idle Periods Precautions

Precautions to take when the machine is to remain idle for extended periods.

Display of Alarms

Information on volumetric meter, automatic level, and maximum water level alarms.

Troubleshooting Common Problems

Solutions for issues like boiler problems, water flow, and pressure.

Troubleshooting Operation and Leaks

Solutions for overfill, control unit issues, leaks, and gasket problems.

Troubleshooting Coffee Quality

Solutions for issues related to coffee creaminess and grounds.

User Information and Guarantee

User Information on Waste Disposal

Information on proper waste disposal and environmental compliance.

Guarantee Conditions

Conditions under which the machine's guarantee becomes void.

Declaration of Conformity (CE)

Manufacturer's declaration of conformity with relevant CE directives.

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