13. Do’s and don’ts
Do’s
Don’ts
Before installation, rotate the shaft to ensure that
pump is not jammed
Do not use piping smaller than what is mentioned on
the name plate
Ensure proper earthing is provided
Do not run the pump without adequate cooling when
the set is used to pump with static suction lift
Mount the monoblock on a fairly level surface
Do not place the pump at the bottom of the well as
it can sink in the mud at the well bottom. Ensure the
pump rests on a firm surface
Check the direction of rotation of the monoblock
matches the arrow mark cast on the volute casing
Do not have multiple joints on the cable. More the
cable joints, more will be the voltage drop
Rubber gaskets assembled on the monoblock do not
have a central hole. Cut out the central hole and re-
install
Do not remove the strainer as debris can get sucked
into the pump and jam it
Check all fasteners are tight
Do not use to pump corrosive and flammable liquids
Use a starter with inbuilt single phase preventer,
overload protection and high voltage and low voltage
protection
Do not earth to a water line or gas line
In case of high static delivery head, use a check valve in
the delivery line
Do not use undersized electric cables between pump
and starter panel. Factor in low voltage usage
In case of flooded suction, ensure pump suction portion
is kept above the motor body to prevent the motor from
getting exposed during running and resulting in poor
heat dissipation
In case of pumping with static suction lift, do not
keep the pump suction pipe tapering down towards
the pump suction to prevent air lock
Water levels rise significantly during monsoons.
Under such conditions, pumps will operate with higher
discharges and therefore higher current. It is advisable
to install a flow control valve in the delivery pipeline
and throttle the discharge till the current is less than
that specified on the product name plate
Do not place the pump on the bottom of the well if it
is not flat
OMOW001A
27
2020.01
