3-44. HIGH PRESSURE PUMP (R.O. PUMP) REPAIR (MODELS WPES-10, WPES-20 AND WPES-30) -
Be sure to install teflon tape in same direction as threads.
Wrap external threads of nipples (5) with antiseize tape and install nipples on pump assembly (8).
Position gaskets (4) on adapters (5).
Dry cleaning solvent, PD-680, C II, is highly toxic and can ignite organic materials,
nitrates, carbides and chlorates. Wear eye, skin and respiratory protection. Use in well-
Using cleaning solvent and rags, clean pump mounting surfaces.
Pump weighs 330 lbs and is difficult to lift. Use a lifting device rated at 0.5 ton or
greater to install.
Using lifting device, position pump assembly (8) over studs of pump stand and secure with four nuts (6)
and lockwashers (7).
Position gaskets (4) over pipe junction and install clamps (3) with screws (2) and nuts (1).
Operate ROWPU and check for proper operation and leaks in accordance with operators manual (TM 5-
3-252 Change 1