Rainbow 300 off-line feeder R171016 is a freestanding, off-line chlorine/bromine feeder for pool and spa circulation systems. It is not the different 320-series in-line feeder.
Holds up to eleven 3-inch or ninety-eight 1-inch tablets. Pentair lists approximately 12,000–48,000 gallons, depending on demand and feed conditions.
Use only the manufacturer-approved slow-dissolving trichlor or bromine tablets. Do not mix chemicals or use calcium hypochlorite. Maximum operating pressure is 50 PSI. Follow the exact model’s plumbing and recharging instructions; the feeder outlet must return downstream of the heater, or downstream of the filter where no heater is installed.
The enclosed system requires no special venting during operation. Fumes can be released when opened, so follow the manual’s shutdown, draining and handling precautions.
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Frequently asked questions
What is the maximum capacity of the Pentair Rainbow 300 Offline Chlorine Feeder?
The Rainbow 300 Offline Chlorine Feeder can hold 11 large or 98 small tablets.
What type of pools or spas can the 300 series feeder be installed in?
The 300 series feeder is designed for retrofitting into existing pools or spas.
Does the Rainbow 300 Offline Chlorine Feeder require special venting for installation?
No special venting is required during operation, but opening or servicing can release fumes. Follow the manufacturer’s shutdown, draining and chemical-handling instructions.
What is the recommended water capacity that the Rainbow 300 can treat?
The feeder can treat water volumes ranging from 12,000 to 48,000 gallons.
What type of chemical tablets can be used in the Rainbow 300 Offline Chlorine Feeder?
The feeder is compatible with slow dissolving trichlor or bromine tablets only.
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