Seals. When grease seals are used instead of water seals, check
the grease pressure in the seals daily.
Bearings. Lubricate the sludge pump through the grease
connections on the bearing housing each week. Flush out the bearing housing each
year. Then refill with new grease.
Packing Glands. Check the packing glands for leakage each
For water seals, allow about 60 drops of leakage per minute
when the pump is running.
If leakage is high, tighten the two gland nuts evenly a few
turns, but do not draw the glands too tight. After adjusting the gland, turn the shaft by
hand to make sure that it turns freely.
Well Pumps. Well-pump types are centrifugal pumps, reciprocating
(piston or plunger) pumps, and jet (ejector) pumps.
Centrifugal Well Pumps. The turbine well pump is the most widely used
type of well pump. Use the maintenance items listed for centrifugal-type pumps
(par. 6.5.1) and the manufacturer's manual to develop maintenance charts for turbine
well pumps. In addition, check the following items:
Types of Lubrication
Oil-Lubricated Pump and Bearings. Make sure that the oil
tubing and lubricators are filled each day. Check the solenoid oilers for proper
operation and see that they are filled. Check the oil level in the sight gage lubricator
for underwater bearings. Make sure that the oil feed is at an average rate of 3 to
4 drops per minute.
Water-Lubricated Pump and Bearings. This type of design
requires lubrication with clear water. Daily, make sure that the prelubrication tank is full
when the pump is in use.
When filling the tank by pump, be sure to close the
tank-filling valve when the tank is full. Open the lubrication valve to allow water to
reach the bearings before the pump is started.