3-43. ELECTRIC MOTOR (R.O. PUMP) REPAIR (MODELS WPES-10, WPES-20 AND WPES-30) - continued.
Compressed air can blow dust into the eyes. Wear eye protection. Do not exceed 30 psi
(207 kPa) air pressure.
Wipe rotor (14) with clean rags. Using compressed air, blow dust and grit from stator (21) and rotor (14).
Clean fan cover (5) vent slots with compressed air and wipe with clean rags.
Wipe off dirt and grease accumulation on bearings (18 and 19) with clean rags.
Scrape loose paint from fan cover (5), motor casing (20), and brackets (13 and 16). Prime and paint as
Inspect leads and windings of stator (2 1) for evidence of cracked or burned insulation.
Inspect rotor (14) for loose or burned conducting bars.
Inspect bearings ( 18 and 19) for wear, leaking seals and binding.
Inspect brackets (13 and 16) for cracks and corrosion.
Replace defective components.
Using arbor press, install bearings ( 18 and 19) on shaft of rotor ( 14).
Rotor is heavy/difficult to handle. Use two people when installing rotor in stator
Stator assembly wiring inside motor casing can be damaged by rotor or rotor shaft if
rotor is not installed carefully.
Carefully position rotor inside stator (21).
Install seal ( 17) in bracket ( 16).
Slip bracket ( 16) over shaft of rotor ( 14) and aline with casing (20) as marked during disassembly.
3-240 Change 1