Your old pump may have these numbers:
XP2-902513 M 93546590 No. 244802260507 A452X582A6100, XP2-802513, 93556590 (2.5HP). Spa Industries APUM42152A is 2.5HP 1-Speed
Pump Mod: 07040001-6, 07130002-6
- Supercedes all XP2 Pumps with the Century LASAR Pool/Spa Motor with AO Smith motors.
Specifications:
- Flo-master XP2
- 2.5HP – 1.9kW / 4.8BHP
- 50mm Std Fine Thread Unions
- EMG Elettromeccanica
- Length: 380mm / Width: 200mm / Height: 197-235mm
- 2″/50mm FBT Thread – measures ~78-79mm OD on pump
Horsepower Notes:
- Some Spa Manufacturers use a complicated & misleading form of Horsepower measurement that is more commonly used in the USA called hydraulic horsepower (HP=PSI*GPM/1714). It gives a more impressive appearance. Even the USA is stopping this method.
- Australian HP ratings are calculated purely on input power in Watts, which are then converted to HP. (1HP=745.7Watts).
- Balboa & Aquaflo have both released pumps to spa manufacturers that use these misleading power ratings.
- You can always look at the input ratings and convert back to HP.
- Rough HP measurement can also be calculated using Ohm’s Law (V=IR). These pumps also have an Amperage rating that can be roughly converted back to Watts, and then to Horsepower.
Examples: Some Balboa Pumps marked “4HP” is actually a 2HP pump in Australian terms. Some Aquaflo Pumps labelled as 4.8BHP are 2.5HP in Australian terms.