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Davey SJ35-04 - User Manual

Davey SJ35-04
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Manual Pressure Pump
Model SJ35-04
Automatic Water Pressure System
Models SJ35-04PC, SJ60-08PC
Garden Series Jet Pumps
Installation & Operating
Instructions
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Summary

Manual Pressure Pump

Model SJ35-04

Details specific to the SJ35-04 manual pressure pump model, including components.

Automatic Water Pressure System

Models SJ35-04 PC, SJ60-08 PC

Details specific to SJ35-04PC and SJ60-08PC automatic water pressure system models, including components.

Installation & Operating Instructions

Choosing a Site

Guidance on selecting an appropriate location for the pump installation.

Housing your Garden Series Jet Pump

Recommendations for protecting the pump from weather and ensuring ventilation.

Power Connection

Instructions and safety precautions for connecting the pump to the electrical supply.

Electrical Power Surge Protection

Information on protecting the pump's electrical components from power surges.

Pipe Connections

Guidance on making proper pipe connections for optimal pump performance and sealing.

Installations with a Suction Lift

Specific requirements for pumps installed with a suction lift, including foot valve use.

Installations with Flooded Suction

Specific requirements for pumps installed with flooded suction, including gate valve use.

Abrasive Materials

Warning regarding the damage caused by pumping abrasive materials and water temperature limits.

Connection of Mains Scheme or Town Water Supply

Regulations and recommendations for connecting to mains water supply, including isolating tanks.

Priming and Operation

Detailed steps for priming and operating both manual and automatic pump systems.

Control Panel

Explanation of the control panel indicators and their meanings for pump status.

Trouble Shooting Check List

Motor Doesnt Start

Common reasons why the motor fails to start when switched on.

Motor Does Not Start When Tap Is Opened

Causes for the pump not starting automatically when a tap is opened.

Motor Runs But Does Not Pump

Troubleshooting steps when the motor runs but there is no water flow.

Motor Runs But Pumps Poorly or Fault Light On Controller Is Lit

Diagnosing issues causing poor performance or controller fault lights.

Pump Stops, But Restarts Quickly

Identifying causes for the pump cycling on and off without flow demand.

Pump Doesnt Supply Adequate Pressure

Troubleshooting reasons for insufficient water pressure from the pump.

Davey Warranty

Warranty Claims Process

Steps and contact information for submitting a warranty claim.

Warranty Exclusions

Conditions and situations under which the product warranty is invalidated.

Summary

Manual Pressure Pump

Model SJ35-04

Details specific to the SJ35-04 manual pressure pump model, including components.

Automatic Water Pressure System

Models SJ35-04 PC, SJ60-08 PC

Details specific to SJ35-04PC and SJ60-08PC automatic water pressure system models, including components.

Installation & Operating Instructions

Choosing a Site

Guidance on selecting an appropriate location for the pump installation.

Housing your Garden Series Jet Pump

Recommendations for protecting the pump from weather and ensuring ventilation.

Power Connection

Instructions and safety precautions for connecting the pump to the electrical supply.

Electrical Power Surge Protection

Information on protecting the pump's electrical components from power surges.

Pipe Connections

Guidance on making proper pipe connections for optimal pump performance and sealing.

Installations with a Suction Lift

Specific requirements for pumps installed with a suction lift, including foot valve use.

Installations with Flooded Suction

Specific requirements for pumps installed with flooded suction, including gate valve use.

Abrasive Materials

Warning regarding the damage caused by pumping abrasive materials and water temperature limits.

Connection of Mains Scheme or Town Water Supply

Regulations and recommendations for connecting to mains water supply, including isolating tanks.

Priming and Operation

Detailed steps for priming and operating both manual and automatic pump systems.

Control Panel

Explanation of the control panel indicators and their meanings for pump status.

Trouble Shooting Check List

Motor Doesnt Start

Common reasons why the motor fails to start when switched on.

Motor Does Not Start When Tap Is Opened

Causes for the pump not starting automatically when a tap is opened.

Motor Runs But Does Not Pump

Troubleshooting steps when the motor runs but there is no water flow.

Motor Runs But Pumps Poorly or Fault Light On Controller Is Lit

Diagnosing issues causing poor performance or controller fault lights.

Pump Stops, But Restarts Quickly

Identifying causes for the pump cycling on and off without flow demand.

Pump Doesnt Supply Adequate Pressure

Troubleshooting reasons for insufficient water pressure from the pump.

Davey Warranty

Warranty Claims Process

Steps and contact information for submitting a warranty claim.

Warranty Exclusions

Conditions and situations under which the product warranty is invalidated.

Overview

The Davey Garden Series Jet Pump is a versatile and reliable water pressure system designed for various domestic water supply applications. It is available in two main configurations: the Manual Pressure Pump (Model SJ35-04) and the Automatic Water Pressure System (Models SJ35-04PC and SJ60-08PC). These pumps are engineered to provide trouble-free and dependable operation, handling clean water for tasks such as garden irrigation, boosting household water pressure, and transferring water.

Function Description

The core function of the Davey Garden Series Jet Pump is to move water from a source to a desired outlet, increasing its pressure in the process.

  • Manual Pressure Pump (Model SJ35-04): This model operates manually, requiring the user to switch it on and off as needed. It is suitable for applications where direct control over the pump's operation is preferred, such as filling tanks or occasional garden watering. The pump draws water through its suction inlet, pressurizes it, and delivers it through the discharge outlet. Priming is a manual process involving filling the pump body and suction line with water before initial operation.

  • Automatic Water Pressure System (Models SJ35-04PC & SJ60-08PC): These models incorporate a pressure controller, transforming them into automatic water pressure systems. The controller intelligently manages the pump's operation based on water demand. When a tap is opened or water is drawn, the pressure in the system drops, and the controller automatically starts the pump. When the demand ceases and pressure is restored, the controller stops the pump. This automatic functionality provides a convenient and efficient "on-demand" water supply, making it ideal for household pressure boosting, irrigation systems, and other applications requiring consistent water pressure without manual intervention. The controller features LED indicators to signal its working phases (Power on, Pump in standby, Pump running) and anomalies (Restart system), simplifying monitoring and troubleshooting.

Both types of pumps are designed to handle clean water. The jet pump mechanism creates a vacuum to draw water into the pump, where an impeller then imparts kinetic energy to the water, increasing its velocity and pressure. The pump body, motor, suction inlet, and delivery outlet are fundamental components across all models.

Usage Features

The Davey Garden Series Jet Pumps offer several features that enhance their usability and performance:

  • Ease of Installation: The pumps are designed for straightforward installation, though careful adherence to instructions is crucial for optimal performance and warranty validity. They require a firm, level base and should be installed as close to the water source as possible.
  • Robust Construction: Components are manufactured to ensure durability and reliable operation, even under regular use.
  • Electrical Safety: The pump motor is fitted with an earthed three-pin plug and lead, emphasizing the importance of a correct and sound earth connection to the electrical supply. The manual explicitly warns against using long extension leads, which can cause voltage drop and motor overload.
  • Power Surge Protection (Automatic Models): The controllers in the automatic models are equipped with a metal oxide varistor (MOV) to help protect the circuit from electrical power surges or spikes. While not a lightning arrestor, it offers a degree of protection, and for installations prone to severe surges, additional external surge protection is recommended.
  • Optimized Pipe Connections: Recommendations for pipe diameter (at least the same as the pump's inlet/outlet) and the use of unions facilitate easy removal and servicing. Proper sealing with thread tape is emphasized to prevent suction leaks, which are a common cause of poor pump performance.
  • Priming Convenience: Both manual and automatic models require priming before initial use. The instructions detail a clear process for filling the pump and suction line with water to ensure proper operation. The automatic models also feature a "Restart" button on the controller to re-prime or restart the pump after an interruption in water supply or a fault.
  • Automatic Operation (Automatic Models): The pressure controller provides hands-free operation, automatically starting and stopping the pump based on water demand, ensuring consistent water pressure without constant manual monitoring.
  • Diagnostic LEDs (Automatic Models): The control panel's LED indicators (Green for Power on/Standby, Yellow for Pump running, Red for Restart system) provide immediate visual feedback on the pump's status, aiding in quick diagnosis of operational issues.
  • Protection Against Dry Running: The automatic models are designed to stop the pump if it fails to deliver water to the tap, indicated by a red LED, preventing damage from dry running.
  • Versatile Water Source Connection: The pumps can be connected to various water sources, including tanks or mains water. However, strict regulations regarding direct connection to mains water supplies are highlighted, often requiring an isolating tank to prevent damage from excessive mains pressure.

Maintenance Features

Proper maintenance is key to extending the life and ensuring the continued reliable operation of the Davey Garden Series Jet Pump:

  • Clean Water Operation: The pump is specifically designed for clean water. Pumping abrasive materials will cause damage and void the warranty. If the water supply contains solid particles, installing a suction strainer before the pump is recommended to prevent blockages.
  • Temperature Limitations: The water temperature in the pump must not exceed 45°C to prevent damage, which would not be covered by the guarantee.
  • Frost Protection: For installations in cold climates, ensuring the pump's housing is frost-free is important to prevent damage from freezing water.
  • Adequate Ventilation: The pump's cover or housing should provide adequate ventilation to prevent overheating, especially in warmer climates or during continuous operation.
  • Over Temperature Cut-out: The pump motor is fitted with an automatic "over temperature" cut-out for protection. Frequent tripping of this device indicates an underlying problem, such as low voltage, excessive ambient temperature, or poor ventilation, which should be investigated.
  • Suction Leak Prevention: Regular checks for suction leaks are crucial, as they are a primary cause of poor pump performance. Ensuring all connections are tightly sealed with thread tape is a key preventative measure.
  • Servicing Precautions: When servicing or disassembling the pump, it is imperative to switch off and unplug the power, relieve system pressure by opening a tap, and allow any hot water to cool to avoid injury. Only qualified persons should service electrical connections.
  • Approved Lubrication: During servicing, only approved, non-petrochemical-based O-ring and gasket lubrication should be used to maintain the integrity of seals and prevent material degradation.
  • Pest Control: A warning is provided regarding insect infestation, as some insects are attracted to electrical devices. Implementing a suitable pest control plan for the pump enclosure is advised to prevent potential damage.
  • Troubleshooting Guide: The manual includes a comprehensive troubleshooting checklist to help users diagnose and resolve common issues such as the motor not starting, the pump running but not pumping water, or inadequate pressure. This guide empowers users to identify problems before seeking professional assistance.

By adhering to the installation, operation, and maintenance guidelines provided, users can ensure their Davey Garden Series Jet Pump delivers efficient and reliable water pressure for many years.

Davey SJ35-04 Specifications

General IconGeneral
ModelSJ35-04
CategoryWater Pump
Max Head35 m
Frequency50Hz
PhaseSingle Phase
MaterialStainless Steel
TypeJet Pump
Max Flow Rate50 L/min
Voltage230 V
Inlet/Outlet Size1 inch

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