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Swiftech MCP655 dial won't work

post #1 of 5
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I think I broke the dial on my Swiftech MCP655. The dial wouldn't turn past setting 2 and finally I applied a little more pressure and it snapped and now its loose and goes to any setting. I tried turning it up when it was off and on and still wouldn't go past setting 2. I finally applied a little more force and it snapped. Now when I turn the setting down to 1 it stays at that speed and wont go to anything else now. I tried 2, 3, 4, and 5 and still runs at setting 1. The flow meter doesn't spin faster.

What do I do now?
post #2 of 5
Did you turn it in the right direction? When I received mine I thought it was set at 2 so I tried turn it towards 5. It wouldn't. Then I saw that one end of the screw slit has a small arrow on it. It was set at 5 and could be turned in the other direction easily.

Inside the pump is a small potentiometer. It has a smal cross in it. The red dial is in fact a stick that is pushed into this cross at the end. What has happened is most likely that the red dial has snapped where it enters the pot-meter.

You can open the pump by gently prying the bottom off with a screw driver or similar. Then check see if the red stick/dial has broken. If that is the case you might be able to super glue it back together (glue it together outside the pump so you do not get glue into the pot meter or anywhere else inside the pump).

Else you can alway turn the pot meter with a small screw driver or see if you can buy a new dial.


/Nordar
Edited by Nordar - 2/13/11 at 2:09pm
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post #3 of 5
See image below. These pumps are set at 5 (not 2):




Chances are that yours are now at 5.

/Nordar
Edited by Nordar - 2/13/11 at 2:10pm
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post #4 of 5
sounds like you snap the pot off

its easy to get the notch backward sometimes and in your case that what it sounds like you did

2 was probably 5 and a little more preasure just ended it all
sorry
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post #5 of 5
Open up the back, should look something similar to the one on the right here:


If the pot is broke off, you might be able to wire one using jumper leads, but you can't remove the PCB without desoldering the motor wires all the way around.

Maybe add the RPM wire mod and check RPM before messing with it. The basic model is stuck at setting 4, so chances are it might be stuck higher than you think.

Approximate RPM setting values:
Setting 1 = 1800RPM
Setting 2 = 2600RPM
Setting 3 = 3300RPM
Setting 4 = 3800RPM
Setting 5+ = 4800RPM
    
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