Hi - so earlier this year I got the IntelliFlo VS installed and it worked perfectly, quiet, etc...
But about 3 weeks ago I've noticed a 'whistling' noise coming from it. Nothing too loud, just kind of a consistent whistle especially audible when it's on a low or medium speed. At high speed the motor noise overwhelms it.
Any ideas or things I should look for? Around this same time (so in my mind it might be related, but maybe not) I had an air issue (loose lid on pump) that blew out my vacuum cleaner hose a few times and popped out my acid injector tubes as well, so I'm wondering if the backpressure knocked something loose.
But about 3 weeks ago I've noticed a 'whistling' noise coming from it. Nothing too loud, just kind of a consistent whistle especially audible when it's on a low or medium speed. At high speed the motor noise overwhelms it.
Any ideas or things I should look for? Around this same time (so in my mind it might be related, but maybe not) I had an air issue (loose lid on pump) that blew out my vacuum cleaner hose a few times and popped out my acid injector tubes as well, so I'm wondering if the backpressure knocked something loose.