ENGINEERING SPECIFICATIONS
Recirculating pump shall be Sta-Rite model no. _______ self-priming
centrifugal pump, ____ phase, 60 Hz.
General Notes
• Install pump in a cool, dry, well vented location away from pool
heaters and chemical storage.
• Pump should be firmly mounted with pipe supported, to prevent vibration
and undue operational noise.
• Allow 12" minimum clearance behind motor for servicing.
• Motor overheating may be caused by a voltage drop or excessive voltage.
Be sure that wire size and voltage input is properly regulated.
Specifications
• The recirculating pump shall be a self-priming centrifugal design with
a hair and lint strainer as shown in the plans.
• The pump body and seal plate shall be constructed of close-grained
gray iron and close-coupled to an electric motor by means of an
adaptor of the same material. The pump body shall have a single
suction port with a four-bolt flange connection to the hair and lint
strainer. A centerline discharge port of ____" NPT and a winterizing
drain port of 1/4" NPT shall be a part of the design.
• The pump shall be a back pull-out design to allow servicing without
disturbing piping. The pump shall have a cast iron diffuser to aid in
priming and it shall contain a replaceable bronze wear ring for
the impeller. The impeller shall be of the closed type and cast in red
brass, non-overloading at any point on the performance curve. The
mechanical shaft seal shall be a John Crane® type 2 or equivalent and
constructed of ceramic and carbon seal faces, with stainless steel,
brass and Buna N materials in the spring bellows portion. The
impeller shall be secured to the motor shaft by means of a stainless
steel key and locking screw into the end of the motor shaft. There
shall be a shaft slinger made of neoprene to protect motor bearings
from any seal leakage. The pump shall be capable of operating at up
to 75 psi, 200°F continuous water temperature and within a pH range
of 4 to 9.
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