Power Unit Technical Bulletin No. 22


Nov 25, 2006 - ...

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Power Unit

Technical Bulletin

No.

22 Page 1 of 2

22.1 Description The 5HP power unit is the heart of the Endless Pool system. It pumps high-grade vegetable oil to the underwater hydraulic motor to create the swim current. It requires minimal maintenance. The hydraulic fluid should be changed every 3 to 5 years depending on ambient temperature and pool use. The in-tank oil filter, located at the return line/fuel port, only needs to be replaced when the hydraulic fluid is changed. Both of these maintenance issues will be described in more detail in the scheduled maintenance procedure. The Customer Service Department will contact you approximately three years from the date you fill your pool to notify you that the maintenance is due.

22.2 Placement Considerations Placement of the power unit should take into consideration a few factors. The noise generated by the power unit can make a remote location desirable. It can be installed on a rubber mat or piece of rigid foam insulation on top of a concrete pad to lessen vibration transfer noise. The power unit must be protected from rain and needs to have ample ventilation if a soundproofing cover is constructed. The power unit must be placed within 5 feet of the AS-5TD controller in order to attach the float level cord. The float level cord attaches to the float level switch, a safety device that senses a low fluid level in the reservoir as the result of a leak of fluid

22.3 Installation Instructions The hydraulic hoses are connected to the power unit. The low pressure line connects to the port at the oil filter and the high pressure line connects to the port close to the pressure gauge. The maximum pressure of the power unit is 1500 psi. The black knob on the manifold close to the high pressure line acts as a bypass valve. This knob can be used to set the maximum speed available from the current. Turning the knob counter-clockwise decreases the available pressure and consequently the top speed at the pool. Electrical power is drawn from the AS-5TD controller to operate the power unit. The power unit needs to be wired for "opposite hand rotation” by using the appropriate wiring instructions below. See the rating plate on the motor’s casing to determine which type of motor you have. For power units with Baldor motors: #4—Line A #1 and #5—Line B J and #8 remain capped together For power units with Leeson motors: P1—Line A T4 and T8 (pigtailed)—Line B T5, T1, and P3 remain capped together For foreign (50Hz) power units only: Connect live or neutral to either wire at the power unit

22.4 Guidelines for soundproofing or protecting a power unit from water A suitable material should be used to cover or enclose the power unit that will be complementary to the surrounding area. The power unit motor must be protected from direct rain or water from another source such as a sprinkler. If only a cover or roof is being provided, it should overhang the power unit 12 inches on all sides that are 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 12 inches air space on all sides of the motor. The inside of the enclosure can be insulated as long as the minimum air space requirement is kept. Two louvered vents must be installed in the enclosure, each must be a minimum of 18 square inches. One vent must be installed within 6 inches of the ceiling of the enclosure.

Endless Pools Inc.

11/25/06

Power Unit

Technical Bulletin

No.

22 Page 2 of 2

The other vent must be installed within 6 inches of the floor of the enclosure.  The power unit needs to be accessed periodically for maintenance. Therefore, it is recommended that any enclosure or cover is removable or has a door for servicing the unit.

Endless Pools Inc.

11/25/06