Rancilio · 2 and 3 group
Rancilio RS1 — PSSR examination & servicing
RS1 machines are used in specialty cafés chasing temperature stability across a busy bar 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 £500 + VAT with the service included.
Quick answer
Does a Rancilio RS1 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
- £500
The machine
Why the RS1 matters to the Rancilio owner
Rancilio's specialty flagship, and an unusual layout: one large steam boiler feeding an independent 0.15 litre micro-boiler at every group.
In practice you will find it in specialty cafés chasing temperature stability across a busy bar — 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
- £500
- 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. 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
- An unusual layout, but the pressure system in scope is the steam boiler and its protective devices.
- What we examine, and what we charge for, follows the vessel rather than the number of group heads on the front.
- Specialty machine: 2-group 840 mm / 95 kg, 3-group 1084 mm / 110 kg. The RS1 manual lists codes with descriptions only (E00-E20, W01-W03, W08-W09, W20-W27), so causes above follow Rancilio's engineer fault table for the same code set. No RS1 parts catalogue could be read as text in this session (Rancilio's store diagram is JavaScript-only), so part numbers are deliberately left blank rather than guessed.
Verified boiler data
What is actually inside this machine
| Configuration | Steam boiler |
|---|---|
| 2 group | 11.0 L |
| 3 group | 16.0 L |
Manufacturer's published boiler capacities. Where a maker publishes no figure we say so rather than estimate.
Service interval. Set in the technical menu (maintenance in months, cycles and pop-ups), not published as a calendar interval by Rancilio. The machine raises a maintenance pop-up (W08) when the counter expires.
Fault finder
What actually goes wrong on a Rancilio RS1
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 |
|---|---|---|
| E01 - boiler level sensor is faulty; machine will not run correctly. | The level measurement is not working: scaled or failed probe, or a break in the probe circuit. | Clean the probe, check the connector and wiring, replace the probe if the reading does not come back. |
| E02 - boiler pressure not reached; machine cold. | Heating circuit open or disabled: safety thermostat tripped, element or its fastons open, triac/board fault. | Reset the safety thermostat, test element continuity and fastons, then the triac/board. |
| E03 / E04 - short circuit / interruption on the boiler sensor circuit. | Probe or sensor lead shorted or broken - often moisture after a leak or a boiler fill. | Dry and inspect the sensor circuit, replace the probe or its lead. |
| E19 - boiler overpressure. | Heating continues past set pressure (sensor or switching fault). | Stop the machine, check the pressure sensor and the element switching before returning it to service. |
| E20 - level below the safe limit; machine stops. | Boiler level has dropped below the safety threshold - water supply lost, probe misreading, or a drain/leak. | Restore water, check for leaks, clean the probe, then reset and re-check the level. |
These are faults documented for this model, not a generic list.
Common parts
Common parts for the Rancilio RS1
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 |
|---|---|
| #29471 | Rancilio Rs1 Anti-Vac Boiler Filter |
| #29465 | Rancilio Rs1 Drain Tray/Filterholder O-Ring |
| #31944 | Rancilio Rs1 Valve Operator Kit 24v |
| #29454 | Rancilio Rs1 Flowmeter More Precise |
| #29460 | Rancilio Rs1 Specific Shower Plate |
| #31945 | Rancilio Rs1 Triple Level Probe |
| #29464 | Rancilio Rs1 O Ring 14 X 2 Fpn |
| #29473 | Rancilio Rs1 Sprayer |
| #30387 | Rancilio Rs1 Group Head Jet |
| #29451 | Rancilio Rs1 Water Button |
| #29450 | Rancilio Rs1 Coffee Keypad |
| #29462 | Rancilio Rs1 18gr Filter Basket |
Parts most often needed on this model
| Part | Number | What it fixes |
|---|---|---|
| Boiler level probe | — | E01/E03/E04 and E20 all lead back to the level circuit; Rancilio does not publish an RS1-specific probe number in the documents obtained. |
| Boiler pressure transducer | — | E19 overpressure and E10 '12 V pressure sensor missing' point at the transducer and its supply; number not published in the RS1 manual. |
| Group gasket | — | Consumable group seal - confirm the RS1 number against Rancilio's RS1 parts catalogue by serial before ordering. |
Questions
RS1 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 Rancilio RS1?
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 £500 + VAT, which is what most specialty cafés chasing temperature stability across a busy bar 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 Rancilio RS1 need examining?
The Written Scheme of Examination sets the interval, and for a commercial machine used in specialty cafés chasing temperature stability across a busy bar 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 Rancilio RS1 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 Rancilio machines covered
Call and we'll price your RS1 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.