20 Most Recent Shop Vac Shop-Vac& Mini Hang Up Wet/Dry Vac Vacuum - Page 2 Questions & Answers

If the motor housing is all plastic and there is no metal the user could contact and potentially receive an electric shock from should a fault occur, the ground conductor if fitted, would be connected to the frame of the motor.

Most likely full or clogged. Turning off to protect the motor.

there is a float inside vacuum that will prevent the vacuum from sucking water if tank is full.

Are you sure your vac CAN safely suck up water? It's not something you want to do if it can't.

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If the motor is turning on then the issue is one of three things blocked exhaust, blocked intake or the fan that moves the air is loose on the motor . The last doesn't happen as much but can. First thing is to make sure the safety ball hasn't become stuck in the intake line. ( this ball stops water from reaching the motor when using it in a wet environment.. If the machine was knocked over while running or was used to suck up water the ball may be stuck) to fix this , remove the wheels from the bottom of the canister , with the machine off raise it and bang it on the floor several times . If you hear a ball drop then that was your issue. If not Disconnect the hose and see if you have suction at the intake. If you do the problem is a blocked hose. Reverse the hose and try sucking the other direction. If the exhaust is blocked the Vac will come on but the machine will sound like it's under load. Try running it without the filters ( do not use in dirt until filter is cleaned and replaced.,). To check the suction fan requires unplugging the Vac from the wall and opening the motor shroud . Locate the fan , see if it is damaged or loose.

Clean the ball and wipe down the thing that holds down the ball. Take a little bit of WD40 and spray a little on the ball and holder. Try that.

if you are using vac to suck water the ball is a safety device. you must shut vac down and wait you should hear ball drop, if the vac is not in upright position he ball will close shut vac down and wait

Not likely.The on-off switches are cheap plastic, and you will likely find the switch, the plug, the wire, or the motor has died. Sorry.

what vac ?

Some models have a fuse that blows but it is not replacable.

You can do that but you absolutely shouldn't. The filter is what prevent particles from entering the motor and what creates a break for incoming water. That way a solid stream of vacuumed water doesn't go directly up the motor.

Unlike the old days few vacs today have a blower facility. In the old days many vacs used a single exhaust port the hose could fit into for blowing and in particular using some of the supplied accessories - such as the famous spray gun loved and hated by everyone in equal measure. Modern vacs tend to have a diffused exhaust usually through several ports, perhaps because of imagined safety concerns. I suggest you check the operator instructions.

The best thing for a basement that is vulnerable to flooding is a small sump with a permanently wired automatic submersible pump in it. Such pumps are relatively cheap and available in many qualities. While such an installation will not keep a basement dry it will ensure the water level rises only enough for the majority to flow into the sump and be pumped away without you needing to do anything. Wet vacs of my experience either have a float valve to prevent water ingress into the motor or a switch to cut off the power if the level rises too high. Many such vacs have a powerful motor generating much heat and are only suitable for fairly short duty cycles. When used continuously the internal heat build up can distort plastic and melt thermal safety fuses. It is impossible to guess what the trouble might be and that will only be revealed by checking. With vacs the first suspect is the power cord and the second is the switch...

It would be a good idea since the points inside the switch are welded together and produce heat.

Needs a filter bag for dry stuff or a mesh filter for wet.