Spa blowing bubbles when pump on high speed, in pool mode

DesertJon74

Well-known member
May 2, 2010
71
Palm Springs area, CA
#1
I had a Whisperflo 1.5 Uprated 2 speed pump installed recently to replace an older Max-e-glas 2 HP full rated.

The new pump clearly moves more water despite same total HP. What is strange is that "sometime" when it starts on high speed it will pull air from the little tube by the elevated spa (assume this is where the spa bubbles come from). This is despite the pool being in "pool mode", not "spa mode". IE the intake is coming from the pool and the returns are split between the pool and the spa.

Do I have a problem? Is the pump "too strong" for my plumbing?
 

JasonLion

TFP Expert
Platinum Supporter
LifeTime Supporter
May 7, 2007
37,879
Silver Spring, MD
#2
I expect you just need some minor fine tuning. You can stop the spa from bubbling by sending more water to the pool and less to the spa. With an automation system, that means adjusting the cams in the automatic valve actuator so it stops in a slight different position that will send a bit more water to the pool.
 

DesertJon74

Well-known member
May 2, 2010
71
Palm Springs area, CA
#3
When they changed the pump out they also changed the o rings in the automated valves. Could that have done it? Are these simple to adjust for a non-pool expert like myself? The are Jandy valves and have little knobs on top of the handles.
 

mas985

TFP Expert
LifeTime Supporter
May 3, 2007
12,128
Pleasanton, CA
#4
I had a Whisperflo 1.5 Uprated 2 speed pump installed recently to replace an older Max-e-glas 2 HP full rated.
Did you mean the opposite? A 1.5 HP uprated pump is the same as a 1 HP full rated pump, not a 2 HP full rated pump.

Also, when changing pump lines, it isn't 1:1 translation either.
 

JasonLion

TFP Expert
Platinum Supporter
LifeTime Supporter
May 7, 2007
37,879
Silver Spring, MD
#6
Adjusting the cams is mildly annoying, but not really difficult. You just need to be methodical. They talk about adjusting the cams in the manual starting on page 7. There are also a number of videos on YouTubs showing how to do it.

I expect that the actuators need a slight adjustment because the new pump doesn't exactly match the old pump. It should only require a slight teak.
 

JasonLion

TFP Expert
Platinum Supporter
LifeTime Supporter
May 7, 2007
37,879
Silver Spring, MD
#8
It is completely harmless. Well, actually it could cause the PH to go up a little more quickly than usual, assuming the PH tends to go up. But I doubt that will be very significant.