Question

[gobucks145]

My hot tub has four intake suction drains on the bottom sides of it. Only 3 of them are taking water in. I talked to the manufacturer and he said that may be normal as if one may be blocked, the others will take water in. It just didn't sound right to me. I don't want to burn up a pump or a motor because the other 3 drains are trying to compensate for the one that is not taking in any water.

[Dr. Spa™ Ret.]

"My car makes a funny noise........ What is it?"

HEY! At least give us the brand and model of spa  

[J._McD]

My hot tub has four intake suction drains on the bottom sides of it. Only 3 of them are taking water in. I talked to the manufacturer and he said that may be normal as if one may be blocked, the others will take water in. It just didn't sound right to me. I don't want to burn up a pump or a motor because the other 3 drains are trying to compensate for the one that is not taking in any water.

You probably have a check valve on that particular suction fitting.  If the filter is clogged it will probably open the 5# check valve and allow water intake rather than burn the pump out.  It might help to give us some details.  Manufacturer, year etc.

[blizzard]

The way I see it, if it has four intakes then all four need to be suckin. If only three are suckin, that ain't normal. There has to be a reason for it and it needs to be fixed!

[NJDave]

With four suctions, I would guess that you have 2 pumps, which would require 4 suctions, 2 per pump. So, you should have some suction coming from all four. Like Doc said, knowing the brand, could shed some light.

[gobucks145]

Hydrospa   Z50     The hydro spa guy said that the 4th one in line will not use suction unless the others are blocked or clogged.