This has just recently started and I wanted to see if anyone has had similar issues? I am contacting the company later today or tomorrow, just wanted to see if anyone had any positive or negative feedback first.
I run a Delta Separations RFD27. We recently (1 month run time) put a Beaker and Wrench pump on and have made the adjustments to keep good vacuum. A week ago and this morning, I have had an overheating wanting and the pump shut down. It immediately starts back up, but this is obviously not acceptable. I am going to include a few pictures for those that need them.
Besides calling and asking questions over the phone, is there something I am missing about this pump? There is no chatter, no fluids to check, no adjustments that a lay person could make to gear mesh that could be causing excessive heat. Temps are within their recommended settings and the material is clean. I’m just scratching my head as what is missing on such a simple set up.
Might be a PID problem. I’d say the temperature sensor might be malfunctioning —This would explain the immediate start up after it keeps shutting down.
yeah, have you double-checked the actual temperature of the pump head/element itself, with an IR gun or something? as stated above if the thermoprobe or temp sensor is compromised, the controller could be getting an incorrectly low heat reading, and so keeps heating and keeps heating.
that being said, we have two of these pumps on a 6in Pope WFE and just last week had BOTH pumps give this same issue–cutting off due to overheating. we turned them off and back on and they were fine, and haven’t seen the same issue since. super curious that they would hit the same issue within a few minutes of each other, in our case it seemed to be an anomaly and not any actual heat level above normal or set temp parameters
Temp gun shows within 5 degrees both times and not outside of the parameters. Both at the same time, would have made my mind explode.
We wanted to run one first, before adding a second to the refuse side. Secondary question…do you like the second pump on the refuse side? Anything you’d have done differently?
yes we absolutely love the pump on the refuse(/residue/retentate) side. do i assume right that you still have a flask on that side?
simply put, one cannot beat continual input of feed material and continual output of both yields. combine that with a valve manifold to allow you to isolate vacuum, vent to break vac when you need to, then rough pump back to diffusion vac level, then back to diffusion level. downtime is our nemesis lol
Yes on everything you posted. Breaking vacuum from both sides was a want before the second pump goes in. Real estate is a premium on this skid and I definitely want to put more thought into the refuse side to keep it a mobile skid with minimal effort. We are growing and each purchase becomes more thought out as we go.
if you need any help with that lmk, I’ve built out and modded a few WFEs, one of them specifically to maintain as small a footprint as possible. DM me a photo and i’ll give you what advice i have if you want it, and you can take it or leave it
I’ve seen static electricity cause an overheating error on one of those. Happened every time the operator stood up from his chair, started right back up without issue
I don’t know how sensitive your sensor and communications are - but I noticed that your wires are not shielded at all, which means other things in the room could be causing issues that might be getting picked up (happens when things are really sensitive, you know?)
Looks like someone else has had issues with static electricity and this pump - so its possible that is what has happened here.
Through some cable shielding on your wires and see if that helps.
I’ve had other sensors and communications on the low voltage side throw these kinds of things at me. Almost always adding in shielding OR conditioning the electricity helped with random faults that seems to be different than reality. -shrug-
