Before you start
Internal seal replacement is for an experienced repairer. The source’s powered, open-lid leak search is not a user procedure in this written guide.
Before you work
Unplug at the outlet and prevent reconnection before internal work. The front-panel power button does not isolate the machine.
Allow the machine to cool and release stored pressure by the correct service procedure before opening any boiler connection.
Mains wiring and electrical safety checks belong to a suitably qualified repairer. Refit all protective parts before a powered check.
Tools and supplies
Model-appropriate casing drivers
Correct seals, washers and retaining clips for each fitting
Suitable seal-removal tools that do not damage the seat
Any lubricant must be suitable for the actual food-contact seal and service temperature
The guide preserves fitting-specific seal counts and treats the narrator’s material guesses as unverified. Check each actual connection rather than choosing seals by colour.
Part 1 of 3
Assess and prepare
01
Recognise the symptoms and stop a damaging leak
The film describes hissing near the steam-boiler area, water on the bench and persistent gurgling as reasons to investigate. A small leak may also leave corrosion before it becomes obvious externally.
If water is escaping inside the machine or the electrical protection trips, disconnect the supply and arrange repair rather than continuing to run it.
View this section in the original video0:58 Reference: Video 0:58 · Guide checks
Part 2 of 3
Workshop walkthrough
02
Identify the fitting before choosing seals
The source discusses BS007-type small seals and larger BS010-type probe seals, but it also shows newer compression-style boiler ports. Match each actual connection before selecting a kit.
Do not infer seal material from its colour. The narrator explicitly guesses the identity of the blue seals; that is not a verified material specification.
View this section in the original video2:13 Reference: Video 2:13 · Guide checks
03
Open only after isolation, cooling and pressure checks
Unplug and prevent reconnection. Allow the machine to cool and make the boiler system pressure-safe before opening the casing or releasing a connection.
Inspect for water staining, deposits, damaged seals and corrosion. Have a technician perform any live leak diagnosis under an appropriate procedure.
The source’s hot, powered spoon/condensation test is not a step in this written workflow.
View this section in the original video4:12 Reference: Video 4:12 · Guide checks
04
Release and reseal one connection at a time
On the illustrated O-ring hose connections, remove the retaining clip, withdraw the hose and remove the old seal. Keep the hose identity and retaining parts together.
Fit the verified replacement and restore the original assembly before moving to the next port. Do not stretch a different seal onto a fitting merely because its colour looks similar.
View this section in the original video5:16 Reference: Video 5:16 · Guide checks
05
Preserve paired seals and support washers
The source specifically shows two O-rings plus a washer on each illustrated heat-exchanger hose, and one O-ring plus a washer at the illustrated bypass-valve connection.
Confirm those arrangements on the actual fitting and restore all required washers. The archive’s suggestion that missing washers can be tolerated is not a replacement-parts specification.
View this section in the original video5:38 Reference: Video 5:38 · Guide checks
The inset and callouts show connections that use paired seals and washers. 5:50 in the video A brass hose fitting with paired red O-rings being handled during seal service. 6:10 in the video
Part 3 of 3
Finish and verify
06
Inspect the probe ports and finish the service
Inspect probe tips and seals where the job requires their removal. Cleaning a metal probe tip does not establish the electrical health of the complete probe.
Restore the probes, clips, wiring, hoses and covers. A repairer must check leaks and electrical safety before the machine returns to use.
View this section in the original video6:02 Reference: Video 6:02 · Guide checks
The remaining boiler-port seals being serviced; this is general port-service context. 6:50 in the video The original workshop film
Watch the repair in context
The original includes powered open-case inspection and hot components. These stills document locations and seal arrangements; they do not show or certify safe isolation.
Final checks
Use this checklist to review the work and the evidence. It does not claim that these checks were completed on your machine.
The source of the leak has been identified.
Every serviced fitting has the correct seal size, material, count and washers.
No port has been confused with a different compression-fitting design.
All clips, connections and covers are restored; required leak and safety checks are complete.
Sources and model notes
Written from the original BrevTech footage and its current description. Every screenshot links to the matching video time. The film may omit service detail; model and procedure limits are stated above.
Use the procedure and parts that match the actual machine. Stop if the fault, connections or required safety checks cannot be established. Read the BrevTech repair disclaimer .
