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Q. I understand the purge cycle, however my tub is now purging in the middle of the
night. How can I stop this from happening?
A. Small, barely detectable power fluctuations may have disrupted the purge cycle. Turn the
breaker off (or unplug the blower), wait for ten seconds, then plug back in. The blower should
now follow the normal purge cycle.
Q: The air bubbles seem cool. How do I check that the blower is warming the air?
A: To verify, turn the air system on high for 4-5 minutes (you do not need to have water in the
tub). Carefully feel the grey air hose where it exits the blower. It should be warm to the touch.
If it is cold, please contact MTI for service. Please note that some skin sensitive people might
experience the so-called “cold air effect”, which is caused by the actual sensation of air bubbles
running along the skin, giving the bather a “shivering” sensation. Note: Even if the air entering the
tub was hot enough to burn the skin, this shivering effect would still persist. The heated blower is not
designed to heat your bath water, just to preheat the incoming air.
If your tub is installed against an outside wall(s), it is recommended to adequately insulate the
wall(s) to minimize heat loss. Do not insulate the blower itself; the blower needs sufficient air
space surrounding it for proper circulation and operation.
Q: Several of the air jets in my tub are not working. What could be the problem?
A: Some of the air jets may be clogged from normal construction debris, possibly sheet rock dust.
To correct: Fill the tub with several inches of warm water. Add 3-4 ounces of CLR. Use only the
CLR in the yellow bottle, not the gray bottle. Allow to work for 30 minutes. Using a small brush,
such as an old toothbrush, gently brush around each non-functioning jet. Caution! Do not turn the
air system on while you have cleaning solution in the tub! Drain and rinse tub. Repeat if necessary.
Q. Can I relocate the pump and/or blower?
A. The whirlpool pump cannot be relocated once the tub is built. The air blower can be
relocated on-site up to eight feet away from the bath.
Q. Is it safe to use bath salts or bath oils in my whirlpool?
A. Water soluble products such as bath salts are fine to use, however, MTI does not recom-
mend the use of heavy bath oils. If bath oil is used, refer to the cleaning section of your manual
for proper after care and cleaning instructions. Products containing strong natural or chemical
dyes may discolor the jets and/or controls on your tub. Check the label to ensure the products
are safe for acrylic or plastics, and always use according to the product recommendations.
Q. How can I get scratches out of my acrylic tub?
A. Most scratches can be buffed out using an automotive polish. Any polish suitable for use on
"clear coated" automobile paint is fine. Deeper scratches and chips may require the services of
a professional acrylic repair technician.
Q. My bath's hydrotherapy system has been working great for years, and now has
stopped working. What should I check first?
A. The problem is most likely the breaker or the GFCI outlet under the tub. Check your breaker
box first, and then use a hairdryer to test the outlet under your bath where the equipment is
plugged in. This should identify the problem. If both these items check out fine, please have
your registration number available and contact our technical service department.
Q. How do I find the serial or registration number on my bath?
A. The registration number can be found on a silver sticker attached to the outside wall of your
bath. It is typically placed 3-4 inches over the pump and /or air blower.
