Hey I use zalman reserator xt cooling system but when I begin the system, the reserator begins in auto mode and then stops later sometime through giving plenty of beeps!i have tested reset it but it did not changing anything! When I switch it to the manual mode and if the volume so low it will too stop, but when I turn it to the highest velocity then it stays functioning! The flow rate is ever 0.5 and never exceeds it. I have substituted the one reserator because of this trouble before too! Please assist me?