48
Safety, Installation and Operations Manual – Translation of original instructions
Before starting any work on pumps used in liquids which could constitute a hazard to health, carry out thorough cleaning and venting of pump,
tank, etc. according to local regulations.
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Always comply with the safety regulations in force in the place of installation, any local regulations and the dictates of common sense.
Maintenance intervals depend on the type of installation, the workload to which the pump is subjected and the type of liquid in which it is immersed.
During planned maintenance or in any circumstances when the pump’s performance deteriorates or its vibrations and noise level increase, the
parts subject to wear and tear must be inspected; have this done by an Authorised Service Centre.
Do not use the pump if malfunctioning because sudden failure of the rotating parts may cause hazardous situations or damage to the motor.
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Measuring the operating current: to be within the rated current
Measuring the power voltage variation: within ± 5% of the rated voltage
Inspecting the pump:
• If the pump’s performance has diminished significantly, the propeller may be worn or the impeller may be clogged with
debris. Remove any debris and replace the part if it is worn
• Inspecting cables:
• Measuring the insulation resistance: Insulation resistance reference value = 20 MΩ minimum
NOTE: The motor must be inspected if the insulation resistance is considerably lower than the last inspection
Cleaning and inspection of lifting chain or rope:
- Replace if damage, corrosion, or wear has occurred to the chain or rope.
- Remove if foreign object is attaching to it.
Check winches, hooks and chains for signs of failure or wear and corrosion. Clean or lubricate them if necessary and
replace any damaged components. Remove if foreign object is attaching to it.
Verify that the bolts, nuts and screws are properly tightened. When tigthening, renew the threadlocker if necessary.
Check the fasteners on the bottom every time the tank is empty.
Check cables, oil, coolant (DRY models), mechanical seals,
bearings, parts subject to wear (impeller, suction flange….).
If the oil contains water, inspect mechanical seal.
Check cables, oil, coolant (DRY models), mechanical seals,
bearings, parts subject to wear (impeller, suction flange….).
If the oil contains water, inspect mechanical seal.
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Changing oil
Changing the mechanical seals (*)
Changing bearings (*)
Overhaul:
The pump must be overhauled even if the pump appears normal during operation.
Especially, the pump may need to be overhauled earlier if it is used continuously.
(*) Rubber parts need to be replaced if disassembled during inspection
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