Screwfix Concrete Mixer Electrical Repair

Came to use my mixer after a year in storage and everything seemed ok, the motor ran when turned on but after a few moments the motor stopped and it took a few presses of the button to get it started again.

Tipping the mixer to empty it, the mixer yet again stopped but would not restart until it was tilted back.

This random stopping was really frustrating, so off came the wiring enclosure cover to see if any cables have come loose, but nothing obvious other than signs of water ingress which must have happed when the mixer was in storage.

Fortunately I managed to repair it for under £10!

Rusted screws and slight discoloration around the switch connections, but apart from that nothing really immediately obvious as to why it keeps cutting out, so I ordered a new ‘No Volt Release’, Start/Stop module from Amazon, the one selected was a Dacvgog CK21 Electromagnetic switch for concrete cement mixers 240V:

Once arrived, switch removal was very easy by depressing the internal wings on either side and popping out, I made the connections to the new switch before pushing into the hole with a reassuring click.

Power on and everything works as it should with no intermittent stopping irrespective of being tilted or not, to check it wasn’t a fault with the motors thermal fuse internal connections, I took the old starter switch apart to check its condition:

As you can see there is extensive water damage to the Start/Stop switch internally, but only minor signs on the outside, hopefully everything will be fine now 🙂

Rough wiring drawing HERE.

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