So I have a Whisperflo 1 HP pump and the motor finally gave out after more than 10 years of service running 6-8 hours a day. I need to either replace the motor or replace the entire pump and I wonder if someone could advise me. I'm an electronic and software engineer, and know almost nothing about pool hydrodynamics.
With all this variable speed motor hype (and laws) I'm concerned that my particular pool setup would not benefit at all from a variable speed motor that might have to always be running at max speed anyway (i.e. functioning as a single speed motor). And therefore the higher cost of a variable speed motor and pump *might* be a supreme waste of money or at least provide so little benefit that it is not financially sound (i.e. cost $1,000 more but saves only $50 a year). I have a limited time (until July 18 IIRC) in order to be able to buy single speed motors and/or pumps before federal law forbids it.
My setup below has run perfectly fine for over 10 years.
Equipment:
- Approx 14,000 gallon oval shaped pool with attached spa and Pebble Tec (not polished) surface
- Whisperflo WFE-4 (1 HP 3450 RPM)
- Pentair Sta-Rite System:3, model S7M120, Modular cartridge
- 2" inlet & outlet
- Max pressure 50psi
- Flow rate 50-100gpm
- Pentair Sta-Rite Max-E-Therm heater, model SR400NA, 2" inlet & outlet
- AquaRite salt chlorinating system, 2", T-15 cell
- Zodiac Caretaker 5-port valve and in-floor pop-up cleaning heads
- 2" inlet, 1.5" x5 outlets
- Optimum pressure rating 15-22psi
Notes:
- The pop-up cleaning heads for the in-floor Caretaker system are the normal ones. Apparently the screw in mounts are designed for 2" PVC. But the Caretaker 5 port valve outlets are 1.5". At some point under the pool the 1.5" PVC is sized up to 2". I think it is likely that the pipe was upsized right at the pop-up head mounting.
- All pool equipment is within 10 feet from the pool skimmer and within about 1 foot from the water surface.
- Since the Pebble Tec is not the smooth polished surface variety, it requires higher water flow for the in floor cleaning system to work and with the current a 1 HP Whisperflo there are a few spots where the water flow is just a little too weak to pick up sand that blows into the pool (I live in a desert).
Water flow:
value (from pool or spa) -> pump -> filter -> heater -> chlorinator -> value (to spa jets or pool)
-> If to spa, then to tee with air blower and on to 3 spa jets
-> If to pool, then to another value (bypass or Caretaker)
-> If to 5-port value then 1 zone to 1-way check value and to pool wall, the other 4 zones to popup heads
-> If to bypass then to it goes into a tee on the other side of the 1-way check value to prevent back pressure into the Caretaker.
With all this variable speed motor hype (and laws) I'm concerned that my particular pool setup would not benefit at all from a variable speed motor that might have to always be running at max speed anyway (i.e. functioning as a single speed motor). And therefore the higher cost of a variable speed motor and pump *might* be a supreme waste of money or at least provide so little benefit that it is not financially sound (i.e. cost $1,000 more but saves only $50 a year). I have a limited time (until July 18 IIRC) in order to be able to buy single speed motors and/or pumps before federal law forbids it.
My setup below has run perfectly fine for over 10 years.
Equipment:
- Approx 14,000 gallon oval shaped pool with attached spa and Pebble Tec (not polished) surface
- Whisperflo WFE-4 (1 HP 3450 RPM)
- Pentair Sta-Rite System:3, model S7M120, Modular cartridge
- 2" inlet & outlet
- Max pressure 50psi
- Flow rate 50-100gpm
- Pentair Sta-Rite Max-E-Therm heater, model SR400NA, 2" inlet & outlet
- AquaRite salt chlorinating system, 2", T-15 cell
- Zodiac Caretaker 5-port valve and in-floor pop-up cleaning heads
- 2" inlet, 1.5" x5 outlets
- Optimum pressure rating 15-22psi
Notes:
- The pop-up cleaning heads for the in-floor Caretaker system are the normal ones. Apparently the screw in mounts are designed for 2" PVC. But the Caretaker 5 port valve outlets are 1.5". At some point under the pool the 1.5" PVC is sized up to 2". I think it is likely that the pipe was upsized right at the pop-up head mounting.
- All pool equipment is within 10 feet from the pool skimmer and within about 1 foot from the water surface.
- Since the Pebble Tec is not the smooth polished surface variety, it requires higher water flow for the in floor cleaning system to work and with the current a 1 HP Whisperflo there are a few spots where the water flow is just a little too weak to pick up sand that blows into the pool (I live in a desert).
Water flow:
value (from pool or spa) -> pump -> filter -> heater -> chlorinator -> value (to spa jets or pool)
-> If to spa, then to tee with air blower and on to 3 spa jets
-> If to pool, then to another value (bypass or Caretaker)
-> If to 5-port value then 1 zone to 1-way check value and to pool wall, the other 4 zones to popup heads
-> If to bypass then to it goes into a tee on the other side of the 1-way check value to prevent back pressure into the Caretaker.