AGGREGATES MANAGER October 2014
Metso's new Nordberg NP15 impact
crusher takes you 3 steps forward:
design increase cost efficiency
maintenance easier and safer
Introducing the new
Nordberg NP15 impact crusher
equipment used in rugged applications such as dewatering ag-
Electric submersible pumps have three main wear parts: the
impeller, seal, and sha. A drop of preventive maintenance goes
a long way with all of them.
Since the seal is one of the most critical parts of a pump, it's
important to check the seal oil as oen as once a week in heavy-
use applications and refill it as needed. is will ensure the seal
remains properly lubricated and watertight.
Inspecting hoses and cables for damage should be on your
weekly checklist, too, especially if they are exposed to the ele-
ments or in areas where traffic could cause damage. Typically, a
damaged pump hose is easy to spot, as you'll see water flowing
from the hose. A damaged cord, on the other hand, might not be
as noticeable, and, if le unrepaired, could be a danger to person-
nel or short the motor.
For pumps in permanent applications, you'll also want to
take them out of service about every four months to thoroughly
inspect internal components such as the impeller and sha.
Damage to these areas can allow water to leak into the pump and
damage components. is also is a good time to change the seal
oil as it can become thick and gummy over time and cause the
pump to burn out. Don't forget to shut down the power supply
before performing any maintenance to eliminate the risk of
Finally, keep a backup pump on hand to keep water flowing if
your pump breaks down or when you take your primary pump
out of service.
Go with the flow
e longevity and performance of your pump all trickles down
from the preventive maintenance practices you perform. From the
time you purchase a pump to the last day it's on site, a clear pre-
ventive maintenance plan will keep water moving and productivity
flowing in the right direction. AM
Joe Moser is the pump product line manager at Atlas Copco