PYD Electrobombas TRITON Manuel D'instructions page 3

Maintenance
1. Check regularly the insulation resistance between pump winding and motor casing. It
shall not be lower than 50MΩ . Otherwise, measures shall be taken. After meeting requi-
rements, can the electric pump be used again.
2. The following steps shall be taken according to the following steps:
Dismantlement: Check all the vulnerable parts such as ball bearing, mechanical seal, im-
peller, etc. Replace them if damages occurred.
Change oil: Remove the oil-filled screw in oil chamber to fill 10# mechanical oil to
about 80-90% capacity of the oil chamber.
Pressure test: Pressure test shall be taken after the repair or replacement and the pressure
shall be 0.2 MPa with 3 minutes until no leakage or sweat occurred.
3. If the electric pump remains to be unused for a long period of time, it shall not be
soaked in the water and shall run in clean water for several minutes to remove the hard
sediments inside and outside of it, and dry it for rust-proof treatment ,then place it in the
draughty area. For the used electric pump, repaint with lacquer and rust-resisting paint
according to its erosion.
troubleshooting
Trouble Main reasons
Electric pump 1. Power voltage too low.
start difficultly 2. Pump phase lost.
3. Impeller clogged.
5. Big loss of cable voltage.
6. Stator winding burnt.
Insufficient 1. Head too high.
water flow 2.Strain and inlet clogged
3. Impeller worn severely.
4. Submersion swallowed too much
and air sucked in.
5.Impeller rotates counter clockwise.
Electric pump 1. Switch disconnected or fuse burnt.
suddenly stops 2. Impeller clogged.
operation. 3. Stator winding burnt out.
Stator winding 1. Electric pump runs too long with
burnt out phase lost.
2. Winding turn-to-turn short circuit
or short circuit between phases due
to mechanical seal leakage.
3. Impeller clogged.
4. Electric pump starts and stops
frequently
5. Electric pump runs in overload.
soluTion
1. Adjust voltage to 0.9-1.1 times of the rated range.
2. Check the switch, terminal, cable.
4. Adjust clogged position.
5. Choose the proper cable.
6. Rewind and overhaul
1. Used within the range of rated head.
2. Remove water weed and other foreign matter.
3. Replace impeller.
4. Adjust the submersible depth till no less than 0.5m.
5. Swap over any two-phases out of phase.
1. Check whether the head in use or power voltage
is in compliance with requirements and adjust
accordingly.
2. Remove foreign matter.
3. Rewinding and overhaul.
Remove the troubles, disassemble the winding and
rewind, bake it in the insulating lacquer or send it to
service agency for repair.
SUBMERSIBLE SEWAGE PUMP
INSTRUCTION MANUAL
Please clearly read the manual before use the motor.