CENTRIFUGAL PUMP (BACKWASH PUMP) REPAIR - continued.
Drycleaning solvent, P-D-680, C1 II, is highly toxic and can ignite
organic materials, nitrates, carbides, and chlorates. Wear eye, skin, and
respiratory protection. Use in a well-ventilated area.
Using drycleaning solvent, remove dirt and grease accumulation from all parts.
Using wire brush, clean rust and corrosion from pump case (2), adapter (17), splash ring (19) and cover
(13). Clean all parts with soap and water.
Inspect pump case (2), impeller (7) and
adapter (17) for cracks, damage, and
With ring (4) in place, measure inside
diameter of ring in the "wear area" and
Measure inside diameter of wear ring (4) in
"non-wear area" and record.
Subtract smaller diameter from larger
diameter. If result exceeds 0.022 inch,
replace wear ring (4).
Replace lockwashers, seals, gaskets and
Replace all damaged or excessively worn
Position splash plate (19), slinger (18) and
adapter (17) on shaft of motor (20) and
install four screws (16).
Pump will leak if carbon disk is not installed
Lubricate rubber cup (15) and install
ceramic disk (14) in cup with smooth, flat
surface pointing up, away from motor.
Install disk and cup in cover (13).
Position cover (13) on adapter (17).