Regular Submersible Motor Inspections

Daily Inspections

(1) Check for excessive vibration and strange sounds.
(2) Check working order
(3) Check electric current values.
Remarks

Confirm that there are no sudden changes in current or pressure.
Measure and record values regularly.

Monthly Inspection

(1) Measure insulation resistance.
(2) Measure continuity.

Check insulation resistance lower limits.
Confirm U-V, V-W, W-U thermal protectors continuity
Confirm that thermal protector coil is not continuous

Annual Inspection

(1) Check protective equipment (thermal protectors, flood detectors etc.) status.
(2) Inspect appearance.

Confirm their continuity.
Pull the pump and check for any damaged parts

Every 2-3 Inspection

(1) Overhaul and service unit

Replace any worn parts (mechanical seals, bearings)
Confirm and repair any wear, deformities, corrosion, or faulty parts.

Note

1. Inspect the unit everyday if it is used 2,000 hours or more consecutively in one year.
2. The frequency of overhauls varies according to the amount of use.