3
The Role of the Pump Mechanic
They are expected to render technical assistance to the community in maintaining
their hand pumps
Regularly inspect boreholes functionality status at least once or twice every month
He/she should discuss with the WSSC issues pertaining BH status
During every inspection, necessary servicing (preventive maintenance) should be
done
Ensures that the pump spares selected can give lasting solution to the existing
problems
Maintain tools and a stock of spares to enable him/her to have a capacity to carry out
repairs during routine maintenance visits and when called for hand pump repairers
The India Mark II Pump
—
Major Components
The Handle Assembly
–
This is a long
lever
, which is connected to a piston in the pump
(
Pump Cylinder
) that draws water up to the tap (
spout
)
.
A longer hand lever can more effi-
ciently draw water from a deeper well with fewer strokes.
The Pedestal
–
This is the outside main body of the borehole, protection the parts inside.
The Water Tank Assembly
–
This is the part where water from the pipes
collects
before it
goes out through the spout. It is where the
rising main
is connected using thread in the riser
pipe holder.
The Pump Head Assembly
–
This houses many of the mechanical components of the
bore-
hole handle
, including the pump-lever, chain, upper connecting rods, and the pivot.
Connecting Rods and Rising Mains
–
These pieces usually come in 10 feet lengths and are
threaded with male and female sockets to allow for connection for variable well depths. Con-
necting rods are attached to the
pump cylinder
. This drives the pistons which draws water
from the well. Riser pipes are usually
11/2-inch
(40mm) diameter pipes that
carry
water up
to the
spout
.
Pump Cylinder
–
This is the main pump, which is set in the aquifer deep underground. In-
cludes the plunger rod, upper and lower valves, rubber seating and sealing rubbers, brass
liner, reducer caps and cylinder body. The depth that a pump is set is based on the desired
yield rates
. A minimum yield of 1-2 cubic meters per hour is usually targeted. One cubic me-
ter is equal to 264 gallons.
