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Monthly maintenance checks for slurry pumps

Amostech Pumps recommend that the pump’s performance (head and flow) is verified monthly against the original or start-up duty point, as this will indicate the condition of the wearing parts. Our specialised Mining team also suggest the following elements be checked monthly:

Sealing system

As with all pump wearing parts, the components of the sealing system will require periodic checks to avoid inefficient pump performance. The frequency of this would depend on the application or the sealing system. However, a tell-tale sign is the amount of gland water leakage (for expeller and gland-packed pumps).

We suggest replacing the gland packing when other main wearing parts are changed – to avoid any further downtime.

Impeller adjustment

This can be adjusted forwards and backwards in the pump’s casing to compensate for part wear in abrasive applications. In order to ensure maximum efficiency and part life, the impeller should be adjusted frequently. Specific instructions are generally listed in the IOM provided by the manufacturer.

Periodically, wearing parts (impellers and liners) will need changing as their wearing condition will affect the performance of the pump. Changing these parts is generally the inverse of the assembling of the pump. It is crucial that you do not apply heat to the impeller hub or inlet eye, as the application of heat may result in the impeller shattering, injury or equipment damage. It is also important to note that wearing parts may have extremely sharp areas due to the wear and tear they endure.

Quarterly maintenance checks for slurry pumps

we recommend the following quarterly slurry pump maintenance measures:

• empty existing lubricant and replace with fresh lubricant
• clean and oil stubs and threads on the motor base and gland
• inspect the stuffing box for wear and re-pack
• clean bearings and bearing houses, refill with fresh oil
• inspect and flush drains as well as seal water piping
• ensure pump and motor are aligned