Repair manual

PS2 750 Repair
Repair.fm 91
Test Wire Resistance
Measure resistance of each phase using Megger tester.
—Replace stator if test results fluctuate more that ±5% of
manufacturer’s specification.
Locked Rotor Current Test
Lock rotor (bj) and apply 25% of rated voltage by lock transformer or
regulator.
—Current measurement test results should be similar to rated
current.
Test Oil Chamber Pressure
1. After installing mechanical seal, attach a vacuum pump to oil
housing.
2. Raise negative pressure inside oil chamber to 60 cmHg (11.6
in.Hg).
IMPORTANT: DO NOT exceed 60 cmHg (11.6 in.Hg).
3. Hold vacuum position for 10 seconds. Vacuum gauge should
remain absolutely stable.
—Replace mechanical seal upon failing vacuum test.
Test Thermal Protection (CTP)
1. Clean points of circle thermal protector (CTP).
2. Check insulation resistance between each phase connection on
protector and ground.
—Not less than 30 MΩ with 500V Megger.
6.4.2.4 Motor Reassembly
Note: If, upon inspection and testing, a pump component requires
replacement, use only original manufacturer’s replacement
cables complete with anti-wicking block assembly and
certified for submersible use.
Note: Use only new gaskets and o-rings when reassembling pump.