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FARMMASTER
JJ & OJ Series
Farm Pumps for Stock Watering,
Irrigation & Water transfer
Should the installer or owner be unfamiliar with the
correct installation or operation of this type o f
equipment, contact the distributor or manufacturer
for correct advice before proceeding with installation
or operation of the product
Distributed in NZ By:
Freephone 0508 634 341
7 Monier Pl, Mt Wellington, Auckland
1060, New Zealand
1

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Summary of Contents for Pentair ONGA FARMMASTER JJ Series

  • Page 1 FARMMASTER JJ & OJ Series Farm Pumps for Stock Watering, Irrigation & Water transfer Should the installer or owner be unfamiliar with the correct installation or operation of this type o f equipment, contact the distributor or manufacturer for correct advice before proceeding with installation or operation of the product Distributed in NZ By: Freephone 0508 634 341...
  • Page 2: Introduction

    Relax - you’ve bought an Onga ... Congratulations on your decision to purchase an Onga product. Onga is one of the best known brands in its field, with a proud local and International reputation. Onga is a brand for reliability, value for money and technological innovation.
  • Page 3 Onga is a byword for reliability, value for money and technological innovation. So wh does O lead its field? Here are a few simple reasons ... Continual Product Improvement We employ the best engineers both in Australia and around the world to develop new and better ways to take water further.
  • Page 4: Table Of Contents

    Table of contents Pages Introduction Technical Data Application Installation 6,7,8,9,10 Electrical 10,11 Operation 11,12,13 Maintenance & Service Troubleshooting Guide 15,16,17 Repair Parts 18,19,20,21,22,23...
  • Page 5: Technical Data

    IMPORTANT! The operator must be provided with this owner’s manual. This must be read before operation and followed during operation. These instructions are a guide only. Users not familiar with pumping equipment should seek advice from people with experience in pump installation and operation. Model Data - JJ400, JJ600, OJ700 &...
  • Page 6: Application

    Application The Farmmaster JJ & OJ range of self-priming jet pumps are suitable for mid to large size domestic and rural applications. Typical applications include: tank filling; household water supply; stock watering; irrigation and water transfer from dams, creeks, wells and bores.
  • Page 7 Installation (continued) d) Suction To maintain optimum performance from your pump, the suction pipe should be: • Kept to the shortest length possible - place the pump as close to the water source as possible. • Re-enforced crush resistant (non-collapsible) hose or pipe. •...
  • Page 8 Installation (continued) For shallow well applications it is recommended to set the pressure switch cut-out to 30kPa (5psi) below the maximum pump pressure when the system is operating with maximum suction lift. g) Valves Onga recommend the use of shut off valves in suction & discharge pipe to assist when maintenance is required.
  • Page 9 Installation (continued) Piping All pipe threads should be tightened correctly to prevent leaks. An air leak in the suction pipe will prevent the pump from operating. Galvanised or poly- thene pipe can be used. For correctly sized pipe refer to pipe friction tables. Always use suction pipe that is the same size or larger than the pump suc- tion port.
  • Page 10: Electrical

    Installation (continued) Fittings: Fittings restrict flow; for best efficiency use fewest possible fittings. Avoid fittings which could cause an air trap. Do not connect system to a high pressure or city water system. Electrical Ground motor before connecting to electrical power supply.
  • Page 11: Operation

    Electrical (Continued) Voltage Voltage at motor must not be more than 1% above or 6% below motor nameplate rated voltage or motor may overheat, causing overload tripping and reduced component life. If voltage is less or more than the above when the motor is running at full load, consult power company.
  • Page 12 Operation (Continued) The self-priming time range is 1 to 5 minutes for a height difference of 2 to 3 metres, under normal installation conditions. Normal conditions are understood to be: with suction having an internal diameter of DN 50mm, water temperature at 20 C, and 50Hz mains power supply.
  • Page 13 Operation (continued) If an ‘offset’ injector installation is used, it may not be practical to ensure an even suction rise from the water source to the pump. If this is the case, install a tee in both the suction and pressure pipes at the highest point(s) for ease of priming.
  • Page 14: Maintenance & Service

    Pump Maintenance & Service Pump should only be serviced by qualified personnel. For best results, use only genuine Onga factory parts.Be sure to prime pump before starting. Before removing pump for maintenance or service: SWITCH OFF POWER to pump before proceeding. Disconnect the pump from the mains/power supply.
  • Page 15: Troubleshooting Guide

    Troubleshooting Guide Symptom Cause Remedy Pump failure or reduced Suction leaks / lost prime Pump must be primed; make capacity or reduced sure that the pump casing is discharge pressure. full of water. Refer priming instructions. Make sure there are no leaks in suction piping.
  • Page 16 Troubleshooting Guide (Continued) Symptom Cause Remedy Pump running too slowly. Low voltage. Check voltage at motor terminals and at meter while pump is running – this check should be performed by a qualified electrician only. If voltage is low check for loose connections or consult your power company.
  • Page 17 Troubleshooting Guide (Continued) Symptom Cause Remedy Rapid Cycling. Pressure tank too small. Fit a larger capacity or secondary pressure tank. Pressure tank has incorrect Check pressure with tyre air charge. gauge or similar. Adjust pressure to 10% below the cut-in pressure of the pump. Pressure switch setting Have your local pump incorrect.
  • Page 19: Repair Parts

    Repair Parts Table - JJ400 Item Description Qty. Casing & Studs Assy. Separator Plate Impeller Diffuser Mechanical Seal O’ring – Casing O’ring – Shaft Sleeve Baffle Motor Shaft Sleeve Tee – Assembled Mounting Assy. Pressure Switch Priming Plug & O’ring O’ring Pressure Switch Assy.
  • Page 21 Repair Parts Table - JJ600 Item Description Qty. Casing & Studs Assy. Bush Spigot O’ring – Spigot Diffuser Yoke Baffle O’ring – Casing Shaft Sleeve Kit Mechanical Seal Impeller Impeller Nut – 3 Phase only Bolt – Yoke Screw – Casing Studs –...
  • Page 23 Repair Parts Table - OJ Range Item Description Qty. Casing & Studs Assy. Stud O’ring – Diffuser Diffuser O’ring – Casing Mechanical Seal Yoke O’ring – Shaft Sleeve Shaft Sleeve Shaft Sleeve & O’ring Assy. Nut - Casing Motor Bolts – Yoke Baffle Ring Impeller Cable Clamp Assy.
  • Page 24 IMPORTANT Please attach your sales invoice/docket here as proof of purchase should warranty service be required. Please do not return Warranty - Retain for your records. Purchased From ........................Purchase Date........Serial No......Model No......Distributed in NZ By: Freephone 0508 634 34 1 7 Monier Pl, Mt Wellington, Auckland 1060, New Zealand...

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