USE ONLY HAYWARD GENUINE REPLACEMENT PARTS
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EcoStar Variable Speed Pump
IS3400VSP Rev-B
When determining the speed(s) to operate your pump, you must also take into account the minimum
requirements for proper sanitation and equipment/water feature functionality.
It is recommended you filter (“turnover”) all the water in the pool at least once every 24 hours. Check with local
requirements for the minimum turnover rate. Running the pump at a lower speed may require running the pump for a
longer period of time in order to meet the turnover requirements for proper sanitation.
Equipment such as heaters, skimmers, and chlorinators require minimum flows to operate correctly. Refer to individual
equipment manuals for specific requirements for low flow operation.
After setting the pump speed(s), it is recommended you check all other equipment/water features are functioning as
intended. For example, when running at a low speed for daily filtration, verify water is adequately flowing over the
skimmer weirs. Operate the pump at higher speeds for the shorter periods of time needed to operate a heater, water
feature, etc.
11. Troubleshooting
11.1. General Problems
•
Motor Will NOT Start:
1. Make sure the terminal board connections agree with the wiring diagram on the pump data plate label.
2. Be sure the pump is wired for the available field supply voltage (230VAC).
3. Check for and correct any improper or loose wiring connections; open switches or relays; tripped circuit
breakers, or blown fuses.
4. Manually check the rotation of the motor shaft for free movement and lack of obstruction. Correct if
necessary.
•
Motor Shuts OFF:
1. Check for low voltage or power drop at the motor (frequently caused by undersized wiring). Contact a
qualified professional to verify the electrical connections.
•
Motor Hums, But Does NOT Start:
1. Impeller jammed with debris. Have a qualified repair professional open the pump and remove the debris.
•
Pump Won't Prime:
1. Empty pump/strainer housing. Make sure the pump/strainer housing is filled with water and the cover o-
ring is clean. Ensure the o-ring is properly seated in the cover o-ring groove. Ensure the o-ring sealing
surface is lubricated with “Jack’s 327” and that the strainer cover is locked firmly in position. Lubricant will
help to create a tighter seal.
2. Loose connections on the suction side. Tighten the pipe/union connections.
NOTE - Any self-priming pump will not prime if there are suction air leaks. Leaks will result in bubbles
emanating from the return fittings on the pool wall.
3. Leaking O-ring or packing glands on valves. Tighten, repair, or replace the valves.
4. Strainer basket or skimmer basket loaded with debris. Remove the strainer housing cover or the skimmer
cover. Clean the basket, and refill the strainer housing with water. Tighten the cover.
