View Full Version : DOS Won't Maintain Prime

07/07/2017, 02:26 PM
My new DOS refuses to maintain the prime on pump one. I've tried reseating the tube in the DOR but it keeps losing prime. Any suggestions?

The DOR is a really expensive reservoir and if it can't maintain prime, it's basically garbage and I'm more than a little miffed. I can't understand why they wouldn't use rigid refrigerator line tubing instead of the soft airline tubing.

07/10/2017, 04:46 AM
Try reseating all the connections, if that fails open a support ticket with Neptune. I believe there were some early production model DOS that shipped with faulty heads, you might have one of those and be due a replacement.