3 Phase Power Unit Supplemental GuidePage 1 of 5

Endless Pools Inc. 4/22/2011

DescriptionThe power unit is the heart of the Endless Pool system. It pumps high-grade vegetable oil to the underwaterhydraulic motor to create the swim current. It requires minimal maintenance. The hydraulic fluid should bechanged every 5 years depending on ambient temperature and pool use. The in-tank oil filter, located at the returnline/fill port, only needs to be replaced when the hydraulic fluid is changed. Both of these maintenance issueswill be described in more detail in the scheduled maintenance procedure. The Customer Service Department willcontact you approximately four years from the date you fill your pool to notify you that the maintenance is due.

Placement ConsiderationsPlacement of the power unit should take into consideration a few factors. The noise generated by the power unitcan make a remote location desirable. It can be installed on a rubber mat or piece of rigid foam insulation on topof a concrete pad to lessen vibration transfer noise. The power unit must be protected from rain and needs tohave ample ventilation if a soundproofing cover is constructed.

Installation InstructionsThe hydraulic hoses are connected to the power unit. The low pressure line connects to the port at the oilfill/element and the high pressure line connects to the port on the high pressure manifold(blue box). Themaximum pressure of the power unit is 1500 psi.

A 208-440 volt, 14-7 amp GFCI (RCD) supply is required to power the system. The receiver in the power unitwill also require a 220 volt 5 amp single phase power supply. Use the chart below to ensure that the motor iswired properly based on the input voltage. If Endless Pools is made aware of the system voltage, the power unitwill arrive with the controller already attached and the motor will be pre-wired into the controller. The controllerwill also come with a 6' electrical whip that will get directly wired to a shut off.

3 Phase Power Unit Supplemental GuidePage 2 of 5

Endless Pools Inc. 4/22/2011

Guidelines for soundproofing or protecting a power unit from waterA suitable material should be used to cover or enclose the power unit that will be complementary to thesurrounding area. The power unit motor must be protected from direct rain or water from another source such asa sprinkler. If only a cover or roof is being provided, it should overhang the power unit 12 inches on all sides thatare open. A slight pitch to the roof is recommended for water runoff.

If desired, the power unit can be fully enclosed for soundproofing purposes. There must be a minimum of 12inches air space on all sides of the motor. The inside of the enclosure can be insulated as long as the minimum airspace requirement is kept. Two louvered vents must be installed in the enclosure, each must be a minimum of 18square inches. One vent must be installed within 6 inches of the ceiling of the enclosure. The other vent must beinstalled within 6 inches of the floor of the enclosure.

The power unit needs to be accessed periodically for maintenance. Therefore, it is recommended that anyenclosure or cover is removable or has a door for servicing the unit.

Three Phase Power Unit Wiring InstructionsLocate the 18 gauge black and red wires in the end of the electrical whip that supply power to the receiver(circuit board). The receiver will only operate on a nominal 220V single phase power supply.Note 1: The Circuit Saver feature described in Technical Bulletin #19 of the Endless Pool owner’s manual or theRemote Water Quality System Supplemental Guide cannot be used with three phase power supplies.Note 2: Excess voltage supplied to the receiver will cause damage. Review the following 3 options for wiring thecontroller and choose the version that is most suited in your application.Note 3: If necessary, the input voltage of the power unit can be modified using the wiring schematic providedwith the motor.

For color version of this Supplemental Guide visit: http://www.myendlesspool.com/custserv/episupplementalguides.html

3 Phase Power Unit Supplemental GuidePage 3 of 5

Endless Pools Inc. 4/22/2011

Option 1: Common wiring in the United States and countries with 60Hz applications.1) Use wire nuts to connect the 3 lines of 3 phase power to the wires in the end of the supplied electrical

whip. Include the 18 gauge black and red wires that supply power to the receiver under two of theincoming power lines.

2) Measure 220V(nominal) between the two wire connections where the receiver wires are attached.3) If 220V is not read, then switch 2 of the input lines until 220V is read.

Line SideFrom Breaker

Line SideTo Motor

Junction Box Connections

Receiver WiresMust Read 220V

For color version of this Supplemental Guide visit: http://www.myendlesspool.com/custserv/episupplementalguides.html

3 Phase Power Unit Supplemental GuidePage 4 of 5

Endless Pools Inc. 4/22/2011

Option 2: Supply single phase power directly to receiver. Commonly used in 50Hz applications. 1) Supply independent 220V single phase power to the 18 gauge black and red wires that provide power directly

to the receiver. Black receives the hot and red receives the neutral. 2) Connect the 3 lines of 3 phase power to the wires in the end of the supplied electrical whip.

Line SideFrom Breaker

Line SideTo Motor

Junction Box Connections

Receiver WiresMust Read 220V

Receiver WiresMust Read 220V

For color version of this Supplemental Guide visit: http://www.myendlesspool.com/custserv/episupplementalguides.html

3 Phase Power Unit Supplemental GuidePage 5 of 5

Endless Pools Inc. 4/22/2011

Option 3: Use one phase of incoming power and an independent neutral to supply power to the receiver.Commonly used in 50Hz applications.1) Use wire nuts to connect the 3 lines of 3 phase power to the wires in the end of the supplied electrical whip.

Include the 18 gauge black wire that supplies power to the receiver under one of the incoming power lines.Note: you must be able to read 220V between this wire and neutral.

2) Run an independent neutral wire to the junction box and attach to the 18 gauge red wire.

Line SideFrom Breaker

Line SideTo Motor

Junction Box Connections

Receiver WiresMust Read 220V

220V Hot (Live)

IndependentNeutral

For color version of this Supplemental Guide visit: http://www.myendlesspool.com/custserv/episupplementalguides.html