3.7 Starters/Control Panel
Connect supply leads, pump set leads to the panel board
according to the connection diagram. Keep panel board in a
waterproof shelter. For all the 3 Phase pumpsets we
recommend the use of starters with built in thermal overload
and single phasing preventors. For pumps upto 5.5 Kw Direct
On Line (DOL) starters are recommended Above 7.5Kw
star/delta starters are recommended.
All Single Phase pumpsets are to be used with control panels
supplied along with pumps.
4. Starting the pump set
4.1 Single phase pumpsets
Press green button on panel board and hold only for 3
seconds. Continuous pressing of ON push button will damage
motor windings due to overheating. Minimum time interval
between “ON – OFF “ should be 5 minutes.
4.2 Three phase pumpsets
3-phase pumps sets can be started in the normal mode.
Check that motor current, flow and head are within the Name
plate values
The pump set is to be run at least once a week to prevent
possibility of jamming of the moving parts Thus pump is ready
for operation at all times.
5
6
5. Trouble Shooting
Problem
Probable cause
Possible remedy
Motor does
not Rotate
The clearances between
impeller and casing are
clogged with foreign
particles.
No power supply
Low voltage or single
phasing conditions
Control panel not
functioning because
protective devices inside
panel are activated. For
single phase panels the
capacitor could be faulty
Low voltage / speed low
Dismantle and remove
obstructions
Check power supply, and
panelBoard connections
as per Connection
diagram
Operate only within
voltages range specified
on Name plate and
ensure balanced 3-phase
supply.
For single phase panel
Replace capacitors, if
found defective.
Check supply voltage
and operate only if
supply conditions are
healthy
MONOSUB R
MONOSUB R
