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Before doing any work the learner must conduct a pre start check list.
Before doing any work the learner must complete a risk assessment.
A multi stage pump has one impeller.
The normal float is the distance the rotating unit can move axially with the balance disc/ balance head valve.
The total float is the distance that the rotating unit can be moved axially when the balance head valve/ balancing disc is not fitted.
The balance disc prevents the impellers from thrusting into the neck rings and therefore causing friction and causing pump to eventually to seize.
Mud pumps are used to transport mud from underground pump stations.
The Cameron pump is air operated.
The gardener pump is driven by an electric motor and has three reciprocating plungers joined by connecting rods to a crankshaft which is enclosd in a box and lubricated by splash feed.
The Glenfield pump is driven by an electric motor and is geared down through vee belt driven pulleys and aspur wheel and pinion.