FLYGT MP-3067 - MP-3102;3127 Motor Protection Trip Troubleshooting

No
Is the impeller stuck?
Yes
Clean.
WARNING: disconnect
Clean the sump.
power before checking
the impeller
No
Contact service shop.
2. Pump starts but motor protection trips
Is motor protection
Yes
Adjust.
set too low?
(Check with data plate)
No
Is the impeller difficult
Yes
Clean the impeller.
to rotate by hand?
Clean out the sump.
WARNING: disconnect
Check that the impeller is not adjusted too
power before checking
tight.
the impeller
If anything else is wrong, contact service shop.
No
Is the installation receiving
No
Notify an electrician.
full voltage on all three
phases?
Yes
Are the phase currents
Yes
Contact service shop.
uneven or too high?
No
Is the insulation between the
Yes
Contact service shop.
phases and ground in the
stator defective?
(Use insulation tester. With a
1000 V-DC megger, the
insulation between the phases
and between any phase and
ground should be > 1MΩ)
No
Is the density of the pumped
Yes
Dilute the liquid.
liquid too high? (Max density
Change to a more suitable pump.
1100 kg/m
3
, 70 lb/ft
3
)
Contact service shop.
No