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Sticker on the pump body (the part with the basket), not on the motor. Motor labels from Century, A.O. Smith or Regal won't match parts.
Label on the side of the tank near the base. Size is in sq ft, e.g. 420 sq ft = C4030 or CCP420.
Rating plate inside the front access panel. Note the BTU and gas type (NG or LP).
Molded into the body or printed on top. Robotic cleaners: on the power supply.
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Pentair IntellipH pH Controller for Pools - 4 Gal Canister | 521377
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The Pentair IntellipH pH Controller (521377) automatically dispenses muriatic acid from a 4-gallon reservoir to help reduce pH fluctuations. It ships as the controller, an empty 4-gallon acid canister, install fittings, and 15 ft of acid-resistant tubing. Muriatic acid is not included.
- Automatically lowering pool pH by dosing muriatic acid from the included 4-gallon canister.
- Working as the companion to a Pentair IntelliChlor salt chlorine generator.
- Mounting on the equipment pad as a complete controller-and-canister unit (not a spare part).
- Part number: 521377
- Description: IntellipH canister with controller
- Canister capacity: 4 gallons (ships empty; acid is not included)
- Included: controller, 4-gallon storage canister with pump, 15 ft acid-resistant tubing, two saddle clamps (1.5 in. and 2 in.), and one injection fitting
- Pump: metering / peristaltic; Pentair recommends replacing pump tubes about every 6 months (tube kit 522480, sold separately)
- Shipping weight: 21 lb (Pool360)
- Shipping dimensions: 15 x 18 x 24 in. (Pool360)
- Certifications: UL and cUL listed
- Requires a Pentair IntelliChlor Salt Chlorine Generator, or an EasyTouch or IntelliTouch automation system with IntelliChlor support, for power
- Related parts already listed: IntellipH head pump controller 521514 and injection check valve 522513Z
- Bolt the canister to the equipment pad and plumb the injection fitting into the return line with the included saddle clamps.
- Connect power from an IntelliChlor Power Center, or from EasyTouch/IntelliTouch with IntelliChlor support, following the Pentair IntellipH installation guide. Electrical and chemical work should be done by a qualified professional.
- Fill the canister with the diluted muriatic acid mixture Pentair specifies (acid is not included). Always add acid to water; never add water to acid.
Note: Muriatic acid is not included. An IntelliChlor cell or power center is also not included. This controller requires IntelliChlor, or EasyTouch/IntelliTouch with IntelliChlor support, and will not operate on its own.