Gazz292
Member
- Messages
- 208
- Location
- Scarborough
Not sure if anyone's interested, but here's a few photo's of the inside of my cheap cooler.
I added the transformer and relays on the DIN rail bolted to the motor top, and the flow sensor ... which has the right angle brass fitting in the top hose going around the tank.
The other side, pretty basic stuff, a 370 watt cheap induction motor, branded 'ZANIJ'!! the pump head is the same brand, so some far eastern cheapie, but it does the job just fine from what i can tell, and this is only for occasional hobby use for me.
And a photo of the bits that I added for the flow alarm and a trigger switch / foot pedal 'interlock' with the messy wiring to make it all work.
i also added 2 panel mount fuse holders, one for the motor and another for the transformer that runs the relays, and a welding trigger switch / foot pedal pass through.
A piece if DIN rail is fastened to the top of the motor's terminal cover using longer bolts down the existing holes, on the left is a 24 volt AC 'doorbell' transformer, as i preferred the control stuff to be low voltage.
Next to the transformer is a 24 v AC coil 2 pole relay, this inverts the signal from the flow switch to turn the alarm off when there is flow,
If that relay is triggered by there being enough coolant flow, then it also triggers the 4 pole relay on the right, again 24v AC coil in it, that relay has one of the tig torches switch wires going through it, and the 3 wires from the foot pedal, so if the low flow alarm sounds it drops the relays out and interrupts the welding switch signal.
But also, if the power to the cooler is interrupted but not the welder, then the relays drop out... the alarm can't sound due to no power, but welding will be interrupted to alert me of a problem and not burn the torch up.
And finally, a photo of the cooler set up for use on the general workbench (i haven't made my welding cart yet, still waiting for the steel),
The cooler just had a main switch on the top left of the front panel and the 2 rectus 21 stop fittings on the right when i got it
The low flow alarm sounder next to the main switch, the tig switch / pedal socket, 2 fuse holders and the pass through cable to the welders switch socket are the bits i added.
I added the transformer and relays on the DIN rail bolted to the motor top, and the flow sensor ... which has the right angle brass fitting in the top hose going around the tank.
The other side, pretty basic stuff, a 370 watt cheap induction motor, branded 'ZANIJ'!! the pump head is the same brand, so some far eastern cheapie, but it does the job just fine from what i can tell, and this is only for occasional hobby use for me.
And a photo of the bits that I added for the flow alarm and a trigger switch / foot pedal 'interlock' with the messy wiring to make it all work.
i also added 2 panel mount fuse holders, one for the motor and another for the transformer that runs the relays, and a welding trigger switch / foot pedal pass through.
A piece if DIN rail is fastened to the top of the motor's terminal cover using longer bolts down the existing holes, on the left is a 24 volt AC 'doorbell' transformer, as i preferred the control stuff to be low voltage.
Next to the transformer is a 24 v AC coil 2 pole relay, this inverts the signal from the flow switch to turn the alarm off when there is flow,
If that relay is triggered by there being enough coolant flow, then it also triggers the 4 pole relay on the right, again 24v AC coil in it, that relay has one of the tig torches switch wires going through it, and the 3 wires from the foot pedal, so if the low flow alarm sounds it drops the relays out and interrupts the welding switch signal.
But also, if the power to the cooler is interrupted but not the welder, then the relays drop out... the alarm can't sound due to no power, but welding will be interrupted to alert me of a problem and not burn the torch up.
And finally, a photo of the cooler set up for use on the general workbench (i haven't made my welding cart yet, still waiting for the steel),
The cooler just had a main switch on the top left of the front panel and the 2 rectus 21 stop fittings on the right when i got it
The low flow alarm sounder next to the main switch, the tig switch / pedal socket, 2 fuse holders and the pass through cable to the welders switch socket are the bits i added.