Author Topic: Weller WRS3000 - Want to test pump control  (Read 622 times)

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Offline CyclotronTopic starter

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Weller WRS3000 - Want to test pump control
« on: May 25, 2024, 09:36:13 pm »
Does anyone know the other Pin paired with pin 6 for turning on the air/vacuum?


I picked up a WRS3000 base and iron reasonably, but I'm considering purchasing a desoldering setup. As I'd never used the air/vacuum side, I took the pump out and directly tested it. That works great.
I understand that pin 6 is for the wand switch to turn on the pump, but I need clarification on what it should be shorted to when closed. There may be a resistor between pin 6 and its partner inside the wand when the switch is open and near zero ohm for close.
« Last Edit: May 26, 2024, 04:03:06 pm by Cyclotron »
 

Offline CyclotronTopic starter

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Re: WRS3000 - Want to test pump control
« Reply #1 on: May 26, 2024, 01:03:42 am »
If anyone wants to know, PIN 1 to PIN 6 or blue to violet serve two purposes.
When an appropriate wand/handle is connected, a 44-45k ohm resistor will be across these two, signaling that the wand is 80 Watts.
Upon pressing the switch, the circuit is completed, initiating the activation of the air/vacuum pump.

 


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