d. Reverse Osmosis Components (Figure 1-13).
Figure 1-13. Reverse Osmosis Components
(1) High Pressure Pump (1). This is a three-plunger positive displacement pump. It pumps 101 gpm (382 Ipm)
pressurizing the water to the RO vessels (2). The pump is belt-driven by a 60 hp motor. Pump speed and delivery are
fixed. The pump is mounted in a package separate from the ISO container. Restriction of the water supply (blocked
intake flow) will cause extreme vibration of the pump, therefore a low pressure switch (3) will automatically shut down
the ROWPU. Extreme discharge pressure from the pump is unsafe, therefore a high pressure switch (4) will also
automatically shut down the ROWPU.