La Marzocco · 2 and 3 group
La Marzocco Linea Classic S — PSSR examination & servicing
Linea Classic S machines are used in high-volume specialty cafés, roasteries and multi-site groups nationwide. The engineer carries out the statutory PSSR examination, the front-end service and the water treatment on this model — a standalone examination is £295 + VAT, or £695 + VAT with the service included.
Quick answer
Does a La Marzocco Linea Classic S need a PSSR examination?
Yes, if it operates in a workplace. It carries a single steam boiler with its own protective devices, which is the pressure system in scope. Steam is a relevant fluid under PSSR 2000 and steam systems are covered at any pressure and any volume, so the boiler must have a Written Scheme of Examination and be examined periodically by a competent person.
- Examination only
- £295
- With service
- £695
The machine
Why the Linea Classic S matters to the La Marzocco owner
The definitive workhorse of London's specialty coffee scene.
In practice you will find it in high-volume specialty cafés, roasteries and multi-site groups — which shapes what the examination looks like on site: how the machine is accessed, how long it can be offline, and how much scale it has accumulated.
On the day
- The steam boiler is drained and inspected internally with an endoscope for scale, corrosion and weld condition.
- The safety valve, anti-vac valve and fittings are checked and tested.
- The pressure gauge is verified against our calibrated test gauge, not against itself.
- A 3 group boiler holds more water than a 2 group, so the drain, refill and heat-up all take longer — allow the full appointment window.
- The Written Scheme of Examination names the vessel and the protective devices it covers.
Typical rates for this model
- Standalone PSSR examination
- £295
- Service + PSSR bundle
- £695
- Certified safety valve, if it fails
- £55 + VAT
- Water filter, fitted on a visit
- from £107
- Grinder calibration & deep clean
- £89
- If it does not pass
- Explained in writing
All prices exclude VAT. The additional drain and heat-up time a 3 group boiler needs. We confirm the exact figure on the call.
Filters are fitted on site by an engineer and are not posted out. The filter price applies when ordered with a PSSR examination, service, call-out or water test; booked alone it is charged at the standard call-out.
What we see on this model
- A conventional steam boiler with one set of protective devices, which is the pressure system in scope and what the certificate covers.
- Genuine La Marzocco parts cost roughly double the generic equivalent — the certified boiler valve alone is about £36 before fitting — so parts are quoted at OEM cost rather than the standard rate.
- Released June 2022, replacing the Linea Classic (discontinued June 2022). Saturated groups, dual PID; 1gr 3.5 L steam / 1.8 L brew; 2gr 7 L / 3.4 L; 3gr 11 L / 5 L. Serial breakpoints: LS009190/008928/009774/009823 (drain tray), LS009700 (knob), LS013921/013923/014953 (tall cups), LS017511 (Parker valves).
- A one-off annual service on a traditional La Marzocco runs £350–£650 including the manufacturer kit — the engineer fee alone is £200–£350, and a 2-group front-end kit is around £120. Dealers sell annual support at £800–£1,100 for a Linea PB or Classic S and £1,200–£1,650 for a KB90 or Strada. Our published bundle covers labour and the examination; the kit is charged at cost with the visit.
Verified boiler data
What is actually inside this machine
| Configuration | Steam boiler |
|---|---|
| 1 group | 3.5 L |
| 2 group | 7.0 L |
| 3 group | 11.0 L |
Manufacturer's published boiler capacities. Where a maker publishes no figure we say so rather than estimate.
Service interval. LM USA checklists: 3/9 months (LCS.3.x) group gaskets and diffuser screws; 6 months (LCS.6.x) plus steam-valve rebuild; 12 months (LCS.12.x) plus vacuum breaker, pressure safety valve and steam-wand vacuum breakers. Same water spec as the r
What a service covers
- ›Group heads overhauled — gaskets, diffusers and shower screens replaced
- ›Steam and water valves rebuilt, anti-suction valves cleaned and internal O-rings changed
- ›Water tested for total dissolved solids and the inline filter treatment renewed
- ›Level probes descaled, safety switches tested and boiler temperatures logged
Fault finder
What actually goes wrong on a La Marzocco Linea Classic S
Owners usually call us with a symptom, not a diagnosis. This is what that symptom most often turns out to be on this machine, and what putting it right involves.
| Symptom | Usual cause | What fixes it |
|---|---|---|
| Water under the machine or in the drain area, worst case a wet electronics box | documented production change: LM modified the drain tray to stop water dripping out of the drain box and to protect the electronics box from splashes - raised rear wall, more slope, reshaped drain hole, two copper washers per fitting | retrofit the new drain tray and sealed fittings, treat a damp electronics box as this fault until proven otherwise. |
| A group under-delivers or a replacement valve behaves differently from the others | LM moved the Linea Classic S to Parker valves alongside ODE (from serial LS017511), the Parker 3-way brew valve has an integrated 0.8 mm restrictor replacing the one in the copper tube, so mixing brands without swapping the restrictor and rotating the coil 180 degrees changes flow | match brand to brand and swap the gicleur when converting. |
| Steam wand drips when closed, or vacuum breaker passing | steam valve internals and vacuum breakers are 12-month PM items, not fit-and-forget | 12-month kit rebuilds steam valves and replaces safety valve and both vacuum breakers. |
| Portafilter leaks at the group, diffuser screw seized | gasket wear plus diffuser screws - the LCS 12-month kit replaces the screws as well as gaskets | gaskets and screens at 3/9 months, screws annually. |
| After a valve rebuild the group flow is wrong and the coil plug will not sit. | ODE and Parker 3-way valves are interchangeable but not identical: Parker has an integrated 0.8 mm restrictor where ODE used an inline gicleur, and the electrical connection is 180 degrees round. | Match brands. ODE to Parker: remove the inline gicleur and rotate the connection 180 degrees. Parker to ODE: fit the gicleur and rotate 180 degrees (TB 198). |
| Water drips from the drain box, splashing the electronics box. | First-generation drain tray has a shallow slope and no rear upstand; fittings seal with single washers. | New tray with raised back wall from LS009823 (1gr), LS009190 plus LS008627-LS008979 (2gr), LS008928 (3gr), LS009774 (4gr); fit two copper washers L100/1A per drain-box fitting (TB 190). |
| Steam knob and its metal plate get too hot to hold. | Heat conducts from the brass insert straight into knob and cap. | Revised knob with a wider internal air cavity and a cap that only touches the plate on a thin rim, from LS009700; knob F.1.295, cap F.1.208 (TB 190). |
| Tall cups will not fit under the group. | Pre-2024 drain-tray height. | 'Tall cups' build lowers the tray 11 mm; from LS013923 (2gr), LS013921 (3gr), LS014953 (4gr). Retrofit needs every high-cup component, so LM advises against it; grids are interchangeable (TB 195). |
| Pro app loses access to the machine; no quick-rinse option on the continuous button. | Firmware older than v1.35. | Update to v1.35+ (app access is blocked on older firmware); v1.35 adds 0-5 s programmable rinse on T3, v1.36 raises the brew timeout to 120 s (TB 194/197). |
These are faults documented for this model, not a generic list.
Common parts
Common parts for the La Marzocco Linea Classic S
The components most often replaced on this machine, listed by reference number, as a reference for engineers and owners identifying a part.
| Part no. | Description |
|---|---|
| #2102 | Parker 3 Way Grp Solenoid Valve 24v (Plus 3 housings in) |
| #2841 | Element Protection Thermostat - Original |
| #0398 | Lucifer 3 Way Grp Solenoid Valve 230v (Ruby) |
| #18281 | Parker 3 Way Solenoid Valve 24v |
| #0450 | PARKER 3 WAY GRP SOLENOID VALVE 230V (RUBY) |
| #23371 | PARKER 2 WAY INLET SOLENOID VALVE 230V |
| #29950 | PARKER 3 WAY SOLENOID VALVE 24V |
| #0020 | Pump Head Rotoflow |
| #0093 | Sirai Pressure Switch |
| #1497 | Parker Pressure Switch |
| #1578 | Solenoid O Rings Bag Of 100 |
| #1586 | Shower Plate 52 X 5mm |
Parts most often needed on this model
| Part | Number | What it fixes |
|---|---|---|
| Group gasket | H.3.004 | Standard 3/9-month item; silicone H.3.007 also listed. |
| Coffee shower screen, logo, H6.5 | F.3.040.01 | Wear/blockage item. |
| Diffuser screw M6x10 stainless | A.5.110 | Replaces L106/V. |
| Parker 3-way brew valve, 0.8 mm | B.3.017 | Fitted from LS017511; do not mix with ODE. |
| Parker 2-way hot water valve, 2.5 mm | B.3.019 | Same generation as B.3.017. |
| Parker 2-way autofill valve, 1.5 mm | B.3.021 | Steam-boiler fill; scale-prone. |
Questions
Linea Classic S questions, answered
How a boiler of this size is examined, how often, and who carries the duty — see the complete PSSR guide.
0208 037 9340
How much does a PSSR examination cost on a La Marzocco Linea Classic S?
A standalone examination is £295 + VAT, because the additional drain and heat-up time a 3 group boiler needs. Combined with a front-end service it is £695 + VAT, which is what most high-volume specialty cafés, roasteries and multi-site groups choose, since the boiler has to be drained for the examination either way. The bundle on this range is higher than our standard ladder because its service parts are proprietary: a manufacturer service kit and an OEM safety valve cost several times the generic equivalents, and on some models there is no generic equivalent at all. We confirm the exact figure on the call.
How often does a La Marzocco Linea Classic S need examining?
The Written Scheme of Examination sets the interval, and for a commercial machine used in high-volume specialty cafés, roasteries and multi-site groups it is typically 12 to 14 months. A 3 group boiler holds a larger volume of water, so scale accumulates faster than in a smaller machine on the same duty and the scheme usually sets the shorter interval.
How long does a La Marzocco Linea Classic S examination take, and what happens on the day?
A 3 group boiler holds more water than a 2 group, so the drain, refill and heat-up all take longer — allow the full appointment window. The visit runs: the steam boiler is drained and inspected internally with an endoscope for scale, corrosion and weld condition. the safety valve, anti-vac valve and fittings are checked and tested. The gauge is then verified against our calibrated test gauge, the system is pressure tested and held, and the machine is re-assembled, refilled, heated and function tested. The Written Scheme of Examination, signed report and asset record follow within 48 hours.
Other La Marzocco machines covered
Call and we'll price your Linea Classic S on the spot.
Same-week appointments nationwide, the Written Scheme of Examination issued within 48 hours of the visit, and a fixed price agreed before we travel.