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This manual has been written for the benefit of those personnel involved in the operation, maintenance and repair of the motor. It contains information, which is essential for the proper running and care of the unit. It also offers important guidance in the prevention of accidents, which might cause injury to personnel and / or damage to the unit. This manual must be read and thoroughly understood before the motor is first put into service. Its instructions and warnings must be followed closely.


Please contact Submersible Motor Engineering Pty Ltd (at the address given on this manual’s Manufacturers Contacts Page) for technical assistance, spare part enquiries and warranty claims. Always mention machine type, part number, order number and Serial Number when ordering spare parts.

The CONTRACTOR and/or seller warrants the satisfactory performance of work contracted in respect of construction, material and treatment, which implies that:

It shall deliver free of charge new parts for all those parts that during a term of twelve (12) months after operation date become defective due to inadequate construction and/or defective materials.

A maximum of eighteen (18) months after delivery date shall apply for the period of time referred to in the first paragraph. Delivery date shall be deemed to be the date stated on the “consignment note” and/or “bill of lading”.

Defects that have arisen due to normal wear, incompetent treatment or operation, incompetent or incorrect maintenance, insufficient lubrication and lubrication with defective material, are not covered by the warranty.

Defects that have arisen after adaptations and/or repairs carried by and/ or on behalf of the CUSTOMER and/or the purchaser, or by third parties, are not covered by the warranty.

No warranty is given for parts, machinery, instruments, equipment, installations or assembly that have not been installed by the CONTRACTOR and/or the seller, or for those parts, machinery, instruments, equipment, installations or assembly that have been installed but not delivered by it.

The warranty only applies if the CUSTOMER and/or purchaser have complied with all its obligations financial or otherwise to the CONTRACTOR and/or seller.

In no event does the warranty cover more than the delivery and installation of new parts. In no event the CONTRACTOR and/or the seller are liable for any other damage incurred by the CUSTOMER and/or the purchaser.

Contrary to the aforementioned machinery, motors, instruments, the warranty provisions laid down by the maker shall cover equipment or articles delivered with a maker’s warranty. If the maker does not provide warranty or provides a shorter warranty period then the CONTRACTOR and/or the seller shall likewise provide no warranty or a shorter warranty period.

Unless otherwise agreed, no warranty is given for machinery, motors, instruments, equipment or articles delivered that were not new at the time of delivery.

The CUSTOMER and/or purchaser shall submit in writing any warranty claim to the CONTRACTOR and/or the seller within seven (7) days, failing which the claim will lapse.

Disassembly and/or installation costs of those parts that are covered by the warranty shall only be borne by the CONTRACTOR and/or seller if its own workforce can carry this out during the normal working hours within the Submersible Motor Engineering Pty Ltd facilities.

Additional costs such as crane assistance, internal transport assistance from an external workforce etc. shall not be borne by the CONTRACTOR and/or seller. If installation and/or disassembly must be carried out outside the Submersible Motor Engineering Pty Ltd Facilities, all related costs shall be borne by the CUSTOMER.

Submersible Motor Engineering Pty Ltd takes no responsibility if the equipment is used in a way other than that described in the user manual.

The manufacturer has the right to alter its equipment with no liability to make the same changes to equipment that already has been delivered.

The manufacturer cannot be held liable if the client makes unauthorised changes to the equipment.

Use only original Submersible Motor Engineering Pty Ltd parts for safe and efficient functioning of the system. The correct tools must be used. Warranty expires if non-genuine parts are used.

Local rules regarding accident prevention, safety, traffic, and transport must be followed.

Only properly trained personnel who are aware of the potential danger are permitted to operate or maintenance this equipment.

Submersible Motor Engineering Pty Ltd has made this manual with the utmost care. Nevertheless Submersible Motor Engineering Pty Ltd cannot be held liable for possible errors in this user manual.

Failure to adhere to the instructions in this manual will be considered negligence. Submersible Motor Engineering Pty Ltd will not be liable for any consequence resulting from negligence; the user will bear full responsibility.

This manual describes the basic configuration of Submersible Motor Engineering Subsea Pump and Motor.

This equipment Consists of a Subsea Motor and Subsea Pump and may or may not include various ancillary equipment dependant on the specifics of the Scope of Supply. Refer to Job Specific Drawings for exact details of the supplied equipment.

Most injuries that occur during operation and maintenance of equipment are due to failure to observe basic safety rules and take adequate precautions.

Personnel must be trained to recognise and avoid potential hazards and to perform their work using appropriate methods and tools.

The Subsea Motor must be operated only by personnel that are familiar with and fully understand the information given in the user manual.

Always read the User Manual in its entirety and follow all instructions before starting-up the motor for the first time.

Before installing, using or maintaining Subsea Motors or its sub-assemblies, first read the specific instructions for these parts. These instructions can be found in the additional documents supplied with the user manual or by contacting the Manufacturer.

Ensure sufficient filling of the Subsea Motor before starting-up to prevent Water Ingress.

The Motor and its sub-assemblies and components should only be lifted using certified lifting equipment, which is in good condition.

Safety helmets, boots and goggles must be worn when operating or performing maintenance on the Motor.

Observe national and local safety regulations relating to the Motor’s operation and environment as well as any specific instruction given in this manual.


The pump consists of a Subsea Motor and Subsea Pump and may or may not include other ancillary equipment and is designed to be mounted to a rigid frame to withstand the forces caused by start-up.

The Subsea Pump designed to perform according to the Pump Performance Curves graphs listed in additional the documents.

The Subsea Pump and Subsea Motor are made of SS316 Grade Stainless Steel making the equipment a tool that can be utilised in many Subsea Applications.


The Subsea pump is a single-stage centrifugal type.

It will not function properly during operation above the water line and this operation is likely to cause catastrophic Mechanical Seal Failure


  1. Examine the exterior of the Subsea Pump and Subsea Motor unit for loose fasteners, oil leaks and damage.
  2. Inspect castings and weld areas for cracks and dents. SME must be contacted immediately if any such damage is discovered. The pump must not then be operated until SME have given their approval.
  3. Check that there are no rags or packaging materials obstructing the pump’s inlet or outlet.
  4. Check that the flange’s faces of the discharge and suction pipe are in good condition.
  5. Most Subsea Motors are delivered from the factory without the necessary lubricants. As a precaution the presence, condition and levels of these fluids must be checked before attempting to operate the pump.
  6. The correction of most of the foregoing potential faults must be well within the capabilities of a competent service mechanic. The customer is encouraged to contact SME at the first instance if he feels unsure of how any such tasks must be undertaken.


The Subsea Pump is directly mounted to the Subsea Motor. The unit may or may not be fitted with ancillary equipment such as Heat Exchangers, Circulation Pumps and Specific Instrumentation.

The mounting frame or bed used to support the pump must be sufficiently strong to withstand the static/dynamic loads generated by the Subsea Motor and Pump.



The Subsea Pump must be transported and stored in a horizontal position with sufficient supports and/or chocks to prevent it from moving.


When the pump is to be taken out of service for more than two (2) months the following precautions should be taken as a minimum:

Flush any solids out of the Subsea Pump and its suction/ discharge pipes.

Remove all water from the pump’s impeller housing especially when freezing temperatures are common in the area the pump is stored.

When the Subsea Motor is taken into operation after a prolonged storage period the Motor and Mechanical Seal Cavities should be drained and filled with the appropriate oil.

Any routine service tasks that were due before the unit was put into storage shall also be performed.


The Subsea pump and Subsea Motor are thoroughly tested at the manufacturers test site. Any checks and tests should be compared against original test reports to ensure results have not deviated from Manufacturers prescribed results.

The operator of the Subsea pump must be thoroughly familiar with all the features and operating instructions before putting the pump into operation.


Before starting-up the Subsea Pump perform daily checks and electrical inspection procedures.

Do not start the unit unless it is completely submerged below the water line.


Discharge Issues

An obstruction in the pipeline will often be indicated by an abrupt increase in the pressure gauge(if measured at the installation) reading for the pump discharge and a similar drop in the vacuum reading at its inlet(if measured at the installation).

A solid obstruction in the Subsea Pumps suction mouth will tend to cause the vacuum at the Subsea pump’s inlet to increase and its discharge pressure to decrease. An obstruction which has passed through the Pump Screen and becomes lodged in the vanes of the Subsea pump’s impeller will tend to upset the impeller’s balance resulting in increased vibration levels and large, rapid fluctuations in the vacuum and pressure values measured in the pumps suction and discharge lines. Continuing to operate the pump under these conditions will result in damage to its seals and bearings.


Read this chapter carefully and ensure to fully understand it before performing maintenance and/or repair on this product.

The power supply to the Subsea pump and its ancillaries must be locked in the off position before any inspection, maintenance or repair work is attempted

The Subsea pump operator and maintenance personnel are strongly advised to adopt a regular routine of inspection and preventive maintenance on the unit. It is often found that a “don’t repair it until it breaks down” philosophy results in lower and less predictable availability of the machine along with higher repair costs.

Always disengage the pump’s drive before performing any inspection, maintenance or repair to the unit or its components.

Local operating conditions may require changes to the content and frequency of some maintenance tasks.

Be aware of the following safety precautions.

Most accidents involving production operation, maintenance and repair are caused by failure observing the basic safety rules or taking precautions.

Accidents often can be avoided by recognizing potentially hazardous situations.

People must be alert to possible hazards and need to have the necessary training skills and tools to perform their functions properly.

NEVER work on the pump while it is in operation. ALWAYS shutdown the drive and secure the motor from being operated.


Subsea pump unit

The unit must be inspected according to the minimum requirements of the Maintenance Schedule before starting operations. Look in particular for:

  • Water and lubricant leaks
  • Loose or damaged fasteners
  • Worn, cracked or split pipes
  • Regularly check the inside of the pump for wear.

These defects must be repaired immediately.


The wear of pump stool, impeller and discharge depends on:

  • its discharge pressure
  • the material being pumped
  • the amount of cavitation

Check the internal wear parts weekly when the pump starts work on a new project. The interval between checks can be evaluated and adjusted, depending on the new operating conditions.


  • Visual inspection of pump exterior
  • Check for oil & water leaks
  • Check for loose fasteners


Inspect pump wear parts Weekly initially, then as warranted by operating conditions

Daily or Often as Possible

Check oil level in Subsea Motor.

The Subsea Compensator(Customer Supply) should be fitted to one of the Oil In and Out points on the motor and the compensator should provide an indication of the oil level in the Motor.

Recommended oils

SME recommends Shell Tellus 22 Oil. On a practical level quite often the Oil installed in the Hydraulic Systems is generally required to be used as the Lubricant and Compensation oil in the Subsea Motor. The type and range of these oils is very broad and SME will be pleased to review the type of Oil requested to be used in the Operation of the Subsea Motor and Pump for its suitability. Generally equivalent oil types may be used.

Never mix different types of oils.

Submersible Motor Engineering Pty Ltd aims at manufacturing environment-friendly products. To extend the pump’s life the spare parts are for sale for a period of at least 10 years.

When the pump is written off, it can be converted into scrap.

When a Subsea pump, Subsea Motor or parts of it are dismantled, waste materials should be separated as follows:

Tap the oil from the motor drain(s) and submit it as chemical waste to a local chemical waste collector/depot.

Plastics should be submitted to a local chemical waste collector/depot.

Steel (alloys) should be submitted to a local collection depot.

All other metals (copper and aluminium alloys) should be submitted separately to a local collection depot.