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onga SMH90 - User Manual

onga SMH90
20 pages
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OWNER’S MANUAL
Should you the installer or owner be unfamiliar with the correct
installation or operation of this type of equipment you should contact
the distributor/manufacturer for the correct advice before proceeding
with the installation or operation of this product.
We recommend, for additional protection, the pump
to be supplied from socket outlet protected by
a residual current device – RCD (also known as
an Earth Leakage Circuit Breaker – ELCB) with a
maximum rated residual current of 30mA.
Horizontal Multistage
Centrifugal Pumps
SMH Range
SMH35 SMH45 SMH55 SMH75 SMH90

Table of Contents

Questions and Answers

  • M
    Marcus TurnerAug 8, 2025
    What to do if my onga SMH90 Water Pump operates but delivers no water?
    • J
      Jennifer MoranAug 8, 2025
      If your Onga Water Pump runs but doesn't deliver water, several issues could be the cause. First, ensure the pump is filled with water. Next, the suction head might be too high, or the foot valve/strainer isn't submerged enough; try lengthening the suction pipe, but no more than 8 meters. Check for air leaks in the suction pipe and joints. Also, the suction pipe/strainer or non-return valves might be clogged with debris, or the pump itself might be clogged. Cleaning these components may resolve the issue.
  • T
    Todd ChapmanAug 15, 2025
    Why my Onga Water Pump does not operate and the motor does not run?
    • A
      Ashlee SullivanAug 15, 2025
      If your Onga Water Pump isn't operating and the motor isn't running, there are a few potential causes. First, verify that there is electricity available to the pump. Next, make sure the pump is plugged in correctly. Finally, check if the circuit breaker has been activated, and if so, reset it.
  • H
    Heather ClarkAug 25, 2025
    How to troubleshoot reduced performance in Onga Water Pump?
    • A
      Antonio WilliamsAug 25, 2025
      To troubleshoot reduced performance in your Onga Water Pump, consider these potential causes: the suction head might be too high, so reduce it. If the foot valve/strainer is only partially submerged, try lengthening the suction pipe. A worn or damaged pump shaft seal can cause this issue, so replace any defective parts. Debris partially blocking the pump can also reduce performance; remove any debris and flush the pump with clean water. Lastly, check the pressure switch settings and adjust them if they are incorrectly set, or replace faulty parts.
  • G
    Gregory WilliamsAug 30, 2025
    What to do if onga SMH90 Water Pump hums and the thermal relays cut in and out?
    • A
      Allen OdomAug 30, 2025
      If your Onga Water Pump is humming and the thermal relays are cutting in and out, it could be due to a few reasons. The pump might be clogged by debris, in which case you should clean the suction pipe and foot valve/strainer. Flush the pump with water and remove the priming and drain plugs. If it still doesn't start, dismantle and clean it. Alternatively, the capacitor might be defective and need replacement.

Summary

Horizontal Multistage Centrifugal Pumps

SMH Range

Identifies the specific pump series covered by the manual.

Model Data

Technical Information

Details about inlet/outlet, temperature, IP rating, and electrical supply.

Application

Installation

Safety and Installation Warnings

Key safety precautions and warnings related to electrical installation and general use.

Installation Preparation and Recommendations

Guidance on preparation, pump protection, pipe installation, location, and power source.

Suction Installation Guidelines

Crucial advice for suction pipe setup and diagrammatic examples.

Discharge, Priming, and Electrical Connection

Covers discharge pipe, pump priming procedures, and electrical connection details.

Operation

Start-up and Operation

Instructions for starting the pump and checking motor rotation.

Dry Running Protection and Restoration

Explains the D.R.O.P system and how to restore operation after a fault.

Service and Maintenance

General Care and Maintenance

Minimal attention needed under normal conditions; periodic checks advised.

Troubleshooting

Warranty

Terms and Conditions (Australia;NZ)

Outlines warranty coverage, duration, and exclusions for Australia/New Zealand.

International Warranty and Exclusions

Details international warranty terms and common exclusions like misuse or damage.

Service Claims and Limitations

How to obtain service, requirements, and limitations on implied warranties and damages.

onga SMH90 Specifications

General IconGeneral
Brandonga
ModelSMH90
CategoryWater Pump
LanguageEnglish

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