Seko MSA Series - Notes

SPR0136037 Rev. 1.5
13
stator winding
The fuse is too thin
Replace the fuse with the one that corresponds to the rate
current of motor
The
Housing of
motor is
electriferous
The outgoing wire of
motor is broken and
contacts with the
housing
Open the wire box and tape the broken part with insulated
tape
The power supply
wire is broken and
contacts with the
housing
Tap e th e p ow er s u p p ly w ir e wi th i ns ul at ed t ap e
The winding of stator
is aged and is
creepage
The winding of stator is aged and is creepage
The
insulation
resistance
of winding is
low
The working
condition of motor is
harsh, with moisture
and drop into the
motor, damaging the
insulation layer and
causing low
insulation layer
Use the megger to check and dry the stator
The insulation layer
is aged
The stator winding should be redipped for painting and
dried.
4.4 Notes

Before servicing pump or its related equipment verify that all electric connections (power and
control unit) have been disconnected from mainsDepressurize completely pump and pipes and
drain the section in which maintenance is required
Don’t pour in the ambient polluting substances such as pumped chemicals, hydraulic liquid,
lubricating oil, etc.
Before servicing pump or its related equipment, read carefully the technical specification of the
handled fluids with particular respect to the actions that must be done in case of accidental contact
with a dangerous fluid.
As minimum every six months, dismount the pump head as follows:
Disconnect suction and discharge pipes
Drain processed liquid in the pump head and pipes
Unscrew bolts fixing the pump head to mechanism
Dismount suction and discharge valves