Pentair EQ SERIES Section Troubleshooting, Problems and Corrective Actions

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Section 7

Troubleshooting

Use the following troubleshooting information to resolve possible problems with your EQ Series pump.

WARNING — RISK OF ELECTRICAL SHOCK OR ELECTROCUTION.

Improperly installation will create an electrical hazard which could result in death or serious injury to pool users, installers, or others due to electrical shock, and may also cause damage to property.

1.If you are not familiar with your pool filtering system and/or heater:

a.Do NOT attempt to adjust or service without consulting your dealer, or a qualified pool technician.

b.Read the entire Installation & User’s Guide before attempting to use, service or adjust the pool filtering system or heater.

Note: Turn off power to unit prior to attempting service or repair.

Problems and Corrective Actions

Problem	CorrectiveAction
Pump Will Not Prime	No water in Strainer Pot
	Lid is not tight
	Damaged lid O-Ring
	Water level below Skimmer
	Strainer or Skimmer Basket clogged
	Closed Valve in Piping System
	Air leak in Suction Line
	Pump installed more than 10 ft. above Water Level or otherwise
	too high for Hydraulic Conditions of Pool Plumbing System
	Pump Shaft rotating in wrong direction
Low Flow- High Filter Pressure	Filter is dirty
	Restriction in Filter Line
Low Flow- Low Filter Pressure	Strainer or Skimmer Basket clogged
	Clogged Impeller
	Air leak in Suction Line
	Restriction in Suction Line
	Cavitation - NPSHA less than NPSHR
	Pump Shaft rotating in wrong direction
Motor Does Not Turn	Power Switch is off
	Circuit Breaker has tripped
	Thermal Protector has tripped
	Pump is in OFF mode of Timer
	Motor Shaft is locked by bad Bearing
	Impeller is jammed
Motor Over Heating	Electrical Supply Connections are incorrect
	Wiring to Pump is undersized
	Inadequate Voltage supplied to Site
	Ventilation is inadequate for Motor
	Voltage differential between legs of 3 Phase Circuit >5%
	Pump Shaft rotating in wrong direction
High Pitch OR Growling Noise	Air Leak in Suction Line
coming from WET END of Pump	Cavitation - NPSHA less than NPSHR
	A Valve, Elbow or Tee is located too close to the Suction Inlet of the Pump
	Pump Shaft rotating in wrong direction

EQ Series Pump Installation and User’s Guide