Casadio · 1 and 2 group
Casadio Undici (A2 / S2) — PSSR examination & servicing
Undici (A2 / S2) machines are used in delis, pubs, small restaurants and sandwich bars nationwide. The engineer carries out the statutory PSSR examination, the front-end service and the water treatment on this model — a standalone examination is £265 + VAT, or £440 + VAT with the service included.
Quick answer
Does a Casadio Undici (A2 / S2) 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
- £265
- With service
- £440
The machine
Why the Undici (A2 / S2) matters to the Casadio owner
One of London's most widely distributed entry-level models for small delis and pubs.
In practice you will find it in delis, pubs, small restaurants and sandwich bars — 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 single compact boiler drains and refills quickly, which makes this the shortest appointment we book.
- The Written Scheme of Examination names the vessel and the protective devices it covers.
Typical rates for this model
- Standalone PSSR examination
- £265
- Service + PSSR bundle
- £440
- Certified safety valve, if it fails
- £35 + 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. A single steam boiler with one set of protective devices to examine. 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 very large installed base means parts are cheap and familiar — service and examination in one visit is almost always the cheapest route.
- If the machine has never been on a scheme, the first visit covers the Written Scheme as well as the examination.
- Undici A is the volumetric model with a 5-key touch panel, S is the manual version; same brewing group and copper boiler. The no-fill probe fault and the switch 1/2 fill-heat sequence are the two genuinely useful owner-level items.
Verified boiler data
What is actually inside this machine
| Configuration | Steam boiler |
|---|---|
| A1 / A1 Coffee To Go / S1 (1 group) | 5.0 L |
| A2 (2 group, automatic) | 10.5 L |
| A2 Compact (2 group compact) | 7.0 L |
| A3 / A3 Coffee To Go / S3 (3 group) | 15.0 L |
Manufacturer's published boiler capacities. Where a maker publishes no figure we say so rather than estimate. Gruppo Cimbali's own UNDICI manual carries the pressure vessel table for this machine: boiler Pmax 2 bar at 133 °C, heat exchanger Pmax 12 bar, and an operating pressure of approximately 1.2 bar. Those are the manufacturer's vessel ratings, and they are the same figures our examiners record across the rest of the estate — which is why the stored-energy arithmetic on every page here is read at a 2 bar vessel rating.
Service interval. Cimbali/Casadio use-and-installation manual: first safety-device inspection within three years of purchase, then annually.
Fault finder
What actually goes wrong on a Casadio Undici (A2 / S2)
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 pours out as soon as the water is turned on, before the machine is even powered | Leak at the bypass / expansion valve block — a pinched gasket. | Replace the gasket in the bypass/expansion block. |
| Water coming out of the pressure gauge itself | Cracked internal copper Bourdon pipe in the dual gauge (pump-pressure side). | Replace the gauge. |
| Water leaking at the group head, drip tray filling while idle | Three-way group solenoid (Parker ZB09) leaking by. | Replace the three-way valve. |
| Machine powers up, beeps, relay clicks — but the pump never runs and the boiler never fills | Level probe corroded and reporting a false ready state. | Clean or replace the level probe; this is the documented ‘NO FILL’ cause on the Undici. |
| Pump runs but the boiler will not fill, or pump pressure is intermittent | Air leaks on the suction line. | Check and reseat the suction line joints. |
| Machine powers up, beeps and the relay clicks, but the pump never runs and the boiler does not fill. | Corroded/fouled level probe shorting and giving a false 'ready' signal, so the fill logic never starts the pump (Home-Barista, Undici A1). | Remove the probe and clean it to bare metal (SOS/Brillo pad), re-tension the connector. |
| Water pouring from the bypass valve block just after the pump. | Pinched gasket in the bypass/inlet block (documented strip-down). | Reassemble with the gasket correctly seated or replace it. |
| Water coming out of the pressure gauge. | Cracked copper Bourdon tube inside the dual pump/boiler gauge (documented strip-down). | Replace the gauge; capping the pump-pressure side is only a temporary fix. |
| Brew valve leaking by the group head. | Worn/leaking Parker ZB09 three-way brew valve. | Replace the three-way valve. |
| Boiler element burns out after installation or a long power-off. | Machine switched straight to position 2 (heat) before the boiler is filled; position 1 is fill, position 2 heat (Home-Barista + manual switch logic). | Always fill in position 1 until the autofill stops, then switch to 2; check the probe if fill does not stop. |
These are faults documented for this model, not a generic list.
Common parts
Common parts for the Casadio Undici (A2 / S2)
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 |
|---|---|
| #30775 | Casadio Undici Element 2700w L= 195mm |
| #19251 | Ptfe Element Gasket 58 X 50 X 2 Mm (For Jag30775 & Jag15876) |
| #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 |
| #15876 | Casadio 2grp Element 5400w - Original |
| #23615 | Faema / Casadio Double Shower Plate 58 X 19mm |
| #18141 | Group Seal 74 X 58 X 8MM |
Parts most often needed on this model
| Part | Number | What it fixes |
|---|---|---|
| Boiler level probe | — | No-fill / false ready; no number published in the sources read |
| Parker ZB09 three-way brew solenoid valve | ZB09 | Leaking brew valve at the group |
| Steam/water valve gasket set (FKM gasket + PTFE joint) | 400274020 / 485078010 | Dripping steam or hot-water tap |
| Heating-element flange gasket | 401194010 | Weep at the boiler face |
Questions
Undici (A2 / S2) 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 Casadio Undici (A2 / S2)?
A standalone examination is £265 + VAT, because a single steam boiler with one set of protective devices to examine. Combined with a front-end service it is £440 + VAT, which is what most delis, pubs, small restaurants and sandwich bars choose, since the boiler has to be drained for the examination either way. We confirm the exact figure on the call.
How often does a Casadio Undici (A2 / S2) need examining?
The Written Scheme of Examination sets the interval, and for a commercial machine used in delis, pubs, small restaurants and sandwich bars it is typically 12 to 14 months. A single boiler on this duty normally sits at the middle of that range unless the water is hard, which we test on the day and report with the certificate.
How long does a Casadio Undici (A2 / S2) examination take, and what happens on the day?
A single compact boiler drains and refills quickly, which makes this the shortest appointment we book. 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 Casadio machines covered
Call and we'll price your Undici (A2 / S2) 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.