Words and Their Meaning.
“Spa”; typically means same as hot tub. Often get confused with indoor jetted
bath. But spas normally are outside, require heating, and are operationally 24/7.
“Pump”; Generally only applies to “wetend” or part that moves the water.
Attaches to “motor”.
“Motor”; part that when electrical current is applied it will spin. Normal low speed
is 1725 rpm and 3450 for high. Can be one or two speeds. Some single speed
motors are dual voltage. On dual voltage motors usually the motor comes wired
for high or 240vac. But always confirm from diagram on motor’s label which you
motor is. Usually apply high voltage to a low voltage motor will permanently harm
it. Usually applying low voltage to a high voltage motor will if corrected quickly,
not permanently harm it.
“Jet”; The part of the plumbing that secures the piping to the spa shell and injects
water/air into the spa.
“Topside”; the control pad on the outside of the spa that you operate the spa from
including temperature change and jet action.
“Control Box” or “Command Center”; the box underneath that includes the pc
board and cables. Basically the “brains” of the spa.
“Power”; spas are designed for either 110-130vac or 220-240vac. There is a
certain tolerance of voltage but normally the range should be the above. Outside
the range can harm equipment include the control box and pump motors. Some
spas come designed to operate on either 115v or 230v. It this case, the difference
is efficiency of the spas heater and when it can come on. When the spa is
operated on 115v, the heater uses about 1/3 of its ability to heat. Therefore 1-2
heating per hour is normal. When the same heater has 230v applied to it, the spa
will heat 5-6 degrees per hour. On most system, when the jet pump is on high
and the spa is operating on 115v, the heater turns off. When the spa is operated
on 230v, the heater will remain on. To gain this feature usually requires an
adjustment on the board.
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