Wrecked Em
Supreme [H]ardness
- Joined
- Sep 14, 2004
- Messages
- 8,169
I've been running an Aquacomputer integrated D5 pump for about 3 years. I've never paid much attention to the flow rate, but I always just assumed it was working well.
My old 7970 shit itself out of the blue though, which prompted me to overhaul the loop. Over the last few days, I've been trying to get the damn thing to prime, without much luck. So I've begun to tear it down, and it seems like the pump will just barely move water. I've pressurized the intake line from the faucet to try to flush any air out, but once I remove the inlet pressure, the pump will just barely sustain flow. About a 6" pressure head on the outlet is enough to stall it.
This one looks pretty rudimentary, with no USB control, but a pot on the back of it. I've verified it's getting 12 volts. The magnet seems to be coupled strongly, and I guess it spins fast, but I don't really have a reference to go by.
On thing that is suspect is that this thing happily runs full speed in air, nearly silently. From what I've read, the bearing surface will howl if it runs dry.
Any suggestions? From what I'm seeing on YouTube, this pump should be flowing like a garden hose.
The pump is running full tilt in all of these pics:
My old 7970 shit itself out of the blue though, which prompted me to overhaul the loop. Over the last few days, I've been trying to get the damn thing to prime, without much luck. So I've begun to tear it down, and it seems like the pump will just barely move water. I've pressurized the intake line from the faucet to try to flush any air out, but once I remove the inlet pressure, the pump will just barely sustain flow. About a 6" pressure head on the outlet is enough to stall it.
This one looks pretty rudimentary, with no USB control, but a pot on the back of it. I've verified it's getting 12 volts. The magnet seems to be coupled strongly, and I guess it spins fast, but I don't really have a reference to go by.
On thing that is suspect is that this thing happily runs full speed in air, nearly silently. From what I've read, the bearing surface will howl if it runs dry.
Any suggestions? From what I'm seeing on YouTube, this pump should be flowing like a garden hose.
The pump is running full tilt in all of these pics: