Recent content by jrhAR

Thanks, guys. :) I let the pump run at low speed (1150 rpm) 2 hrs last night and 2 hrs this morning, and then measured FC a few hours later. The level had risen to the predicted level!

I didn't close my vinyl pool over winter, and I ran my pump a couple of hours every morning to try to keep it clean. Last week, I ran the robot bottom cleaner three days to remove 3 months of dirt on the bottom. However, the IC40 showed Low Salt (water temp is 62), and no Status LED lit up. I...

Great! Thanks again, Mark!

A few questions, Mark: I downloaded your "Pool Heat Transfer Tools" spreadsheet. Let's say I input my parameters on the Pipe Freeze worksheet, and it gives a "Total Freeze Time" of 24 hours; if my Pentair VS pump's Anti-Freeze mode comes on and runs periodically during the night, does that...

Gotcha! :) Thanks again. I much appreciate all the posts by you (and others) on this site. I've found a LOT of answers to my questions by searches.

Ok. Thanks again, Mark. :) And I'm assuming that if I do keep the pump running all night, it should prevent freezing even at those low temps.

Thanks, Mark. :) I didn't have a feel for how thick the walls of the valves are. I saw that your tables go down to 20°F; sometimes it gets down into the single digits here. Would it be advisable to go ahead and run the pump when the temp goes below 20°F? BTW, my lines come up out of the ground...

I appreciate the info on when pipes freeze, but what about the check/diverter valves? I have a 3-way combining two supply 1.5" PVC lines just before going into my pump, and another after the SWCG splitting the return into two 1.5" PVC return lines. Last night (actually, early this morning), it...

My Intermatic T104R unexpectedly shipped early, and I got it and installed it yesterday. Physically replacing the deeper Tork box with it was more trouble than the wiring, thanks to your help. This morning, the pump and SWCG both turned on and off as scheduled. :) Many thanks, Dave!!!

Dave, I checked and did find a bare wire running from the bottom of the IC40 Control Panel case to the ground, where it was covered by earth and runs around the corner of the house toward the pool, so it must be going to the pool bonding grid. I found another label on the pump that mentions...

Thanks very much for your reply, Dave. Yes, I just want the timer to start and stop both the pump and SWCG simultaneously. Today, I took the cover off the SWCG Power Center to see if I could determine whether it's wired for 120v or 240v. Although there was a strip of paper printed "Wired for...

Mayorb, thanks for your reply. I think the model I have is before they put the timer in it. The label on the pump says: D/N: 176L8083 P/N: 350521. If there was ever a label that had the pump model number (VS-3050, etc.) on it, it's no longer there. Its control panel only has buttons for...

I just bought a house with my first pool. It has a Pentair VS3050 variable speed pump and an IC40 SWG. They are currently wired from a Tork 1103 timer, which appears to be used only as a junction box, since no wires except grounds are connected to any of the timer's terminals, and the timer's...

I'm buying a house that has a Fox 14x28 inground pool (vinyl liner) with buddy seat. It was built in 2000, converted to salt in 2015. At age 72, this will be my first pool ownership (I can't believe I'm taking this on now). I'm trying to get up to speed before I move in, so I've been reading...