Before you start
An internal repair for an experienced repairer. The filmed machine has an Oracle-style grinder layout; use it to identify the operation, not as proof that every model has the same access.
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
Phillips screwdriver and T20 driver shown in the source
13 mm and 17 mm spanners for the demonstrated valve
Matched valve or plunger/service components and seals
A record of original wiring and hose positions
The footage shows a particular coffee-solenoid repair. It does not establish one universal seal, coil orientation or access procedure for every solenoid fitted to the Dual Boiler and Oracle range.
Part 1 of 3
Assess and prepare
01
Try the normal cleaning cycle first
If the assembled machine is otherwise safe to use, try its normal cleaning cycle before opening it. A sticking valve may improve after cleaning.
If the buzzing remains, inspect the valve rather than treating the sound alone as proof that its coil has failed.
View this section in the original video0:22 Reference: Video 0:22 · Guide checks
Part 2 of 3
Workshop walkthrough
02
Isolate, cool and expose the coffee valve
Unplug at the outlet, allow the machine to cool and establish safe pressure conditions. Remove the top cover by the correct model procedure.
Identify the coffee solenoid and document the original hose and wiring positions before disconnecting anything.
View this section in the original video0:41 Reference: Video 0:41 · Guide checks
03
Disconnect the valve and remove its mount
Remove the waste hose and the three spade connections shown in the video, preserving the identity of every connection, including protective earth.
Remove the four valve mounting screws shown in the demonstration and lift the assembly clear.
Restore the exact documented wiring. The video’s advice that AC connections need not be remembered is not a substitute for correct earth and terminal identification.
View this section in the original video1:18 Reference: Video 1:18 · Guide checks
04
Inspect contamination and the plunger assembly
Inspect the valve before buying parts. The source shows a contaminated valve worth cleaning, followed by an opened plunger assembly.
Check the plunger’s end seals and spring. Worn or sticking internal parts are the fault demonstrated; repair or replace with parts matched to this valve.
View this section in the original video1:55 Reference: Video 1:55 · Guide checks
05
Choose a complete valve or matched internals
The video demonstrates both refitting a replacement valve and exchanging the worn internals while retaining the original body. Choose one route after checking the actual valve.
Keep the seals and small locating parts in their original arrangement. The separate current solenoid-service guide provides a fuller photo reference for that kit.
View this section in the original video3:13 Reference: Video 3:13 · Guide checks
06
Refit the locating pins and seals
The demonstrator fits the locating pins into the seals, then places these into the machine before seating the valve. This helps keep the small parts from falling out.
Check every seal is present and correctly seated before tightening the mount and restoring the connections.
The archive mentions a BS10 silicone substitute for a missing original seal. This guide requires a verified matching seal rather than treating that suggestion as universal.
View this section in the original video2:57 Reference: Video 2:57 · Guide checks
Part 3 of 3
Finish and verify
07
Reassemble and confirm the original fault
Restore the documented hoses, wiring, earth and covers. Have the repairer complete the appropriate electrical and leak checks.
Check coffee flow and whether the original buzzing remains with the machine fully reassembled. Stop if it leaks or behaves abnormally.
View this section in the original video4:11 Reference: Video 4:11 · Guide checks
The original workshop film
Watch the repair in context
Use the original video to check the order and component positions. Its edited footage is not proof of isolation, electrical safety or a complete test of your machine.
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 repaired valve is the coffee valve actually diagnosed.
The plunger, spring and seals match the original assembly.
All locating pins, connections and protective earth are restored.
The machine is closed before functional testing; flow, leaks and buzzing are checked.
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 .
