Installation guide

6 7

Operation

imPower motors are congured with Constant Speed, meaning they simply maintain

the speed (RPM) they are congured for in each application. This reduces the eect

lter cleanliness and product load have on the operation of the motor, unlike

traditional induction motors. The motor only uses the power (current) necessary to

operate at its programmed speed, and has the ability to automatically increase or

decrease power to maintain that speed.

imPower motors turn on and o with application of line voltage. This is critical to its

eectiveness with all existing line-power cuto timers and automation controllers.

Start up

During start up, motor current is slowly applied to motor windings. This provides a

controlled smooth start up. The motor/pump will accelerate to the high speed level

of 3450 rpm in approximately 6-8 seconds. Once started, the motor is programmed to

operate on high speed for two minutes to assure a proper prime is achieved, during

which time no attempt to change speeds will be recognized. Only after this two-min-

ute cycle will a change speed signal be accepted.

If no speed change signal is received by the motor after the two-minute prime cycle,

the motor will remain on high speed for a total of two hours, then automatically turn

down to one of the two reduced speeds. The factory default reduced speed setting

is “low” (1725 rpm), though this can be modied to “medium” (2600 rpm) if the ow/

pressure at low is deemed insucient for operation of certain poolside equipment/

features. The modication of the reduced speed automatic turn-down is found on

page 20 of this guide, titled “Automatic Reduced Speed Selection”.

Stall Detect (Locked Rotor Protection)

This feature protects the motor from external obstructions in the event it does not

achieve high speed operation within 15 seconds of applying voltage or if the RPM

drops below 500 RPM during operation. The imPower is programmed with a hard

fault feature such that the motor will automatically shut down if a stall detect fault

is registered. Power at the timer or automation controller must be removed and

reapplied after one minute of “dwell” time to restart the motor.

Overload Protection (Over-Current or Over-Temperature)

The imPower motor is specied with a series of sensors that continuously monitor the

temperature of critical internal components as well as the current owing through the

electronics. The motor will automatically shutdown if either limit is exceeded. Like the

stall detection, the timer or controller power must be removed, though it is recom-

mended that the motor power stay removed for at least 15 minutes to allow the motor

to cool and/or to determine the cause of the overload condition.