Pentair STA-RITE - User Manual

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Summary

Safety

Important Safety Instructions

Details safety alert symbols (DANGER, WARNING, CAUTION, NOTICE) and general safety advice.

Electrical Safety

Provides guidelines for safe electrical connections, wiring, and grounding.

General Safety

Covers risks of explosion, heavy parts, burns, freezing, and general work area safety.

California Proposition 65 Warning

Informs about chemicals known to cause cancer or reproductive harm in California.

Warranty

Limited Warranty

Outlines the terms, conditions, and periods of the product warranty.

Installation

Motor;Pump Lifting Procedure

Instructions on safely lifting the motor and pump assembly using appropriate equipment.

Location

Guidance on selecting an optimal and accessible installation site for the pump.

Pump Foundation

Requirements for a stable and substantial concrete foundation to support the pump.

Piping

Recommendations for system piping size, velocity, and alignment with pump connections.

Suction Lift Applications

Specific recommendations for suction piping and lift installations, including NPSHA.

Discharge Connection

Guidelines for proper discharge piping, including pipe sizing and check valve selection.

Electrical Connection

Detailed steps for safely connecting the pump motor to the power supply.

Before Start-Up

Essential checks, including rotational direction, before initial pump operation.

Installation • Operation

Priming the Pump

Procedures for filling the pump and suction line with water before operation.

Starting

Steps for safely starting the pump after it has been primed.

Stopping

Instructions on how to safely shut down the pump.

Operation

General precautions and advice during normal pump operation.

Re-priming the Pump

Steps to take if the pump loses its prime and needs to be re-primed.

Maintenance

Lubrication

Information on lubricating motor bearings and the liquid end's lubrication needs.

Performance Check

Guidance on periodically verifying pump output and performance.

Observational Maintenance

Monitoring vibration, noise, and temperature for operational health.

Pump Protection-Cold Weather; Wet Weather Installations

Advice on protecting the pump from environmental conditions like freezing and moisture.

Pump Nomenclature

Identification and description of the various parts of the pump assembly.

Mechanical Shaft Seal Removal

Step-by-step instructions for safely removing the mechanical shaft seal.

Mechanical Shaft Seal Installation

Step-by-step instructions for correctly installing the mechanical shaft seal.

Ordering Replacement Parts

Information on how to locate the pump nameplate and order correct replacement parts.

Troubleshooting

Electrical

Identifies common electrical problems, their probable causes, and corrective actions.

Mechanical

Identifies common mechanical problems, their probable causes, and corrective actions.

System

Identifies common system issues, their probable causes, and corrective actions.

Summary

Safety

Important Safety Instructions

Details safety alert symbols (DANGER, WARNING, CAUTION, NOTICE) and general safety advice.

Electrical Safety

Provides guidelines for safe electrical connections, wiring, and grounding.

General Safety

Covers risks of explosion, heavy parts, burns, freezing, and general work area safety.

California Proposition 65 Warning

Informs about chemicals known to cause cancer or reproductive harm in California.

Warranty

Limited Warranty

Outlines the terms, conditions, and periods of the product warranty.

Installation

Motor;Pump Lifting Procedure

Instructions on safely lifting the motor and pump assembly using appropriate equipment.

Location

Guidance on selecting an optimal and accessible installation site for the pump.

Pump Foundation

Requirements for a stable and substantial concrete foundation to support the pump.

Piping

Recommendations for system piping size, velocity, and alignment with pump connections.

Suction Lift Applications

Specific recommendations for suction piping and lift installations, including NPSHA.

Discharge Connection

Guidelines for proper discharge piping, including pipe sizing and check valve selection.

Electrical Connection

Detailed steps for safely connecting the pump motor to the power supply.

Before Start-Up

Essential checks, including rotational direction, before initial pump operation.

Installation • Operation

Priming the Pump

Procedures for filling the pump and suction line with water before operation.

Starting

Steps for safely starting the pump after it has been primed.

Stopping

Instructions on how to safely shut down the pump.

Operation

General precautions and advice during normal pump operation.

Re-priming the Pump

Steps to take if the pump loses its prime and needs to be re-primed.

Maintenance

Lubrication

Information on lubricating motor bearings and the liquid end's lubrication needs.

Performance Check

Guidance on periodically verifying pump output and performance.

Observational Maintenance

Monitoring vibration, noise, and temperature for operational health.

Pump Protection-Cold Weather; Wet Weather Installations

Advice on protecting the pump from environmental conditions like freezing and moisture.

Pump Nomenclature

Identification and description of the various parts of the pump assembly.

Mechanical Shaft Seal Removal

Step-by-step instructions for safely removing the mechanical shaft seal.

Mechanical Shaft Seal Installation

Step-by-step instructions for correctly installing the mechanical shaft seal.

Ordering Replacement Parts

Information on how to locate the pump nameplate and order correct replacement parts.

Troubleshooting

Electrical

Identifies common electrical problems, their probable causes, and corrective actions.

Mechanical

Identifies common mechanical problems, their probable causes, and corrective actions.

System

Identifies common system issues, their probable causes, and corrective actions.

This document is an owner's manual for a Pentair Sta-Rite Close Coupled Motor Drive Centrifugal Pump, providing essential information for its installation, operation, and maintenance.

Function Description

The Pentair Sta-Rite Close Coupled Motor Drive Centrifugal Pump is designed to move liquids, primarily water, within a system. As a centrifugal pump, it operates by converting rotational kinetic energy into the hydrodynamic energy of the fluid flow. The "close coupled" design indicates that the pump impeller is directly mounted on the motor shaft, resulting in a compact unit that minimizes alignment issues and simplifies installation compared to flexibly coupled pump and motor assemblies. This type of pump is suitable for various applications where reliable fluid transfer and pressure boosting are required. The manual emphasizes that the pump is intended for pumping water only and warns against using it with salt water, flammable liquids, or chemicals, which could lead to fire or explosion hazards.

Usage Features

The manual outlines several key usage features and considerations for the pump:

Installation: Proper installation is crucial for optimal performance and longevity. The pump should be located as near the water source as practical, in a clean, dry, and drained area with ample ventilation, and readily accessible for inspection and maintenance. A substantial concrete foundation is recommended to absorb vibration and provide rigid support. Piping should be at least one commercial pipe size larger than pump connections, with flow velocity not exceeding 8 ft./sec. Careful alignment of piping is critical to prevent distortion of pump components.
Suction Lift Applications: For suction lift, reinforced hose or pipe with sufficient strength to resist collapse is necessary. The suction pipe size should be larger than the pump inlet, and a suction screen is mandatory to prevent debris from clogging the impeller and to mitigate suction entrapment hazards. The suction screen area should be at least four times the suction pipe area. Continuous upward slope of suction piping (1/4 inch per foot minimum) is recommended.
Discharge Connection: Discharge piping should be sized for flow velocity below 8 ft./sec. Non-slamming check valves are recommended to prevent hydraulic shock (water hammer), and a gate, ball, or butterfly valve should be used for isolation, kept full open during operation. A pressure gauge should be installed after the reducer to check operating pressure.
Electrical Connection: All wiring must be performed by a qualified electrician, ensuring proper voltage and phase match the motor nameplate. The motor must be grounded, and all wiring must comply with National Electrical Code and local codes. Minimum recommended pumping panel components, including a contactor, lightning arrestor, loss of prime protection, fuseable disconnect, and starter, are detailed for safeguarding the pump.
Start-Up and Rotation Check: Before initial operation, the direction of pump rotation must be verified. For three-phase motors, if the pump runs backward, any two incoming power leads (L1, L2, L3) should be reversed. Centrifugal pumps running backward will still pump liquids but at a fraction of their published performance.
Priming: The pump must be primed before start-up to prevent running dry, which can overheat and damage internal parts. Procedures for priming with flooded suction, suction lift with a foot valve, and suction lift with a priming pump (e.g., Han-Dee Primer) are provided.
Operation: Users are cautioned to never run the pump dry and to wear safety glasses when working on it. Preventing freezing of pump and system components is essential, as freezing will void the warranty.
Stopping: The pump can be stopped automatically when the pilot device de-energizes the motor starter, or manually by turning the "Hand-Off-Auto" selector switch to "Off."

Maintenance Features

The manual emphasizes several maintenance aspects to ensure continuous and satisfactory operation:

Lubrication: The liquid end of the pump requires no lubrication. Motor bearings are factory-lubricated, but re-lubrication intervals should be consistent with usage to maximize bearing life, referring to the motor instruction manual for specific guidelines.
Performance Check: Periodic checks of pump output are recommended. If performance noticeably declines, troubleshooting steps should be followed.
Observational Maintenance: Regular observation of the pump's operation is advised.
- Vibration: Excessive vibration can reduce unit life; if observed, operation should be discontinued, and the cause identified and corrected.
- Noise: Unusual sounds during operation may indicate distress, requiring investigation and correction.
- Operating Temperature: While the pump bracket and driver may become quite warm (up to 150°F) during operation, excessive surface temperature indicates a problem that needs to be addressed.
Mechanical Seal: The mechanical seal is enclosed, self-adjusting, and cooled/lubricated by the pumped liquid, typically requiring no adjustment or maintenance. However, running the pump dry will damage the seal. Detailed instructions for removal and installation of the mechanical shaft seal are provided, including steps for unfastening hardware, removing the volute and impeller, using a gear puller, and carefully reassembling components with new gaskets/O-rings and thread adhesives where applicable.
Cold Weather/Wet Weather Protection:
- System Drains: Drain valves should be provided to empty the system, including the pump case, to prevent freezing damage.
- Shelter: If possible, the pump unit should be sheltered from weather (rain, dust, sun) with adequate space for service. Proper ventilation is crucial, and the shelter should be located to avoid flooding.
- Condensation: In moist environments where metal parts fall below the dew point, condensation can cause corrosion. A space heater may be considered in severe situations to warm the unit.
Replacement Parts: To ensure correct replacement parts are ordered, users should locate the Sta-Rite nameplate on the pump (typically on the pump case or bracket) and record all nameplate data, especially the catalog number, as nameplates can become worn or lost.
Troubleshooting: A comprehensive troubleshooting guide is included, listing common symptoms (e.g., pump runs but no water delivered, not enough pressure, excessive vibration, abnormal noise, pump stops, overheating) and probable electrical, mechanical, or system causes with corresponding corrective actions. This section helps users diagnose and resolve issues efficiently.