Maintenance; Trouble Shooting - PYD Electrobombas TRITON Serie Manual De Operación Y Mantenimeinto

OPERATING AND MAINTENANCE MANUAL
SUBMERSIBLE SEWAGE PUMP

4. 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 requirements,
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, impeller, 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.

5. TROUBLE SHOOTING

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.
www.proindecsa.com / proindecsa@proindecsa.com
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.
5