Before you start
This follows the replacement route in the video. Removing the front assembly disturbs boiler connections and protective earth; it is an internal service job.
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
7 mm spanner
Correct replacement gauge and matched disturbed seals
A record of all connections, including protective earth
The source offers replacement first, then an improvised drying experiment. This guide keeps the replacement procedure separate from that experiment and does not imply that cosmetic drying calibrates a gauge.
Part 1 of 3
Assess and prepare
01
Check the gauge and the source of moisture
A fogged or water-marked gauge is a reason to investigate moisture inside the casing as well as the gauge itself.
Find and repair the underlying leak. A clear replacement face alone does not establish that the machine is dry or the pressure reading is accurate.
View this section in the original video0:16 Reference: Video 0:16 · Guide checks
Part 2 of 3
Workshop walkthrough
02
Isolate and open the machine
Unplug, allow the machine to cool and make its pressure system safe before removing the top cover.
The video shows front-underside and rear access fasteners. Use the complete casing procedure for the actual revision rather than assuming the brief montage shows every screw.
View this section in the original video1:09 Reference: Video 1:09 · Guide checks
03
Release the front assembly carefully
The filmed access includes releasing the front panel, removing the obstructing level probes and disconnecting an earth strap. Document every connection before moving it.
Protect open boiler ports and avoid straining the gauge tube or wiring as the panel is brought forward.
The earth strap is a protective connection and must be restored. Do not treat it as an optional mounting wire.
View this section in the original video1:51 Reference: Video 1:51 · Guide checks
04
Remove the gauge mounting and pressure connection
Use the 7 mm spanner shown to remove the two gauge mounting nuts. Release the pressure connection without bending or damaging its tube.
Remove the old gauge and compare the replacement’s mounting, connection and scale with it before fitting.
View this section in the original video3:07 Reference: Video 3:07 · Guide checks
05
Fit the replacement and renew disturbed seals
Fit the matched replacement gauge and restore its pressure connection and mounting. Renew the disturbed O-rings with the correct parts.
The video later replaces the probe seals as well. Preserve the original fitting arrangements and verify each seal against the actual port.
View this section in the original video3:31 Reference: Video 3:31 · Guide checks
06
Restore earth, probes, panel and covers
Refit the probes, retaining clips, electrical connections and protective earth in their documented positions.
Check the pressure tube routing and every disturbed seal before closing the front assembly and casing.
View this section in the original video5:15 Reference: Video 5:15 · Guide checks
Part 3 of 3
Finish and verify
07
Check for leaks and plausible gauge operation
Have the repairer complete the appropriate safety and pressure-system checks. With the machine fully reassembled, confirm the original moisture fault and gauge behaviour have been addressed.
The last section of the film experiments with drying an old gauge. It is not a calibration procedure and is not the repair route used here.
Drilling, heating, compressed-air drying and taping the old gauge are archive experiments. They do not certify its accuracy or pressure integrity.
View this section in the original video7:00 Reference: Video 7:00 · 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 moisture source has been repaired.
Gauge mounting, pressure connection and tube routing are correct.
Probes, retaining clips and protective earth are restored.
The machine is fully closed and appropriate leak, safety and functional 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 .
