Operation - Hyundai DHY50E User Manual

5.3.4. Slide hose clamp over end of discharge hose. Slide discharge hose onto hose barb. Tighten
hose clamp securely.
5.3.5. You may choose to assemble the discharge and suction hose as shown above or by using
cam lock connections. Cam locks are another commonly used water pump connection.

6. OPERATION.

6.1. What is head?
6.1.1. Head refers to the height of a column of water that can be delivered by the discharge of the
pump.
6.1.2. Suction Head is the vertical distance between the centre of the pump and the surface of the
liquid on the suction side of the pump. May also be referred to as "suction lift". The
atmospheric pressure of 14.7 psi at sea level limits suction head lift to less than approximately
26 feet for any pump.
6.1.3. Discharge Head is the vertical distance between the pump's discharge port and the point of
discharge, which is the liquid surface if the hose is submerged or pumping into the bottom of a
tank.
6.1.4. Total Head is the sum of the suction head value plus the discharge head value.
6.1.5. As water pumping height increases, pump output decreases. The length, type, and size of
the suction and discharge hoses can also significantly affect pump output.
6.1.6. It is important for the suction operation to be the shorter part of the total pumping action.
This will decrease the priming time and improve pump performance by increasing the
discharge head.
6.1.7. Suction head is a maximum of 25 feet and discharge head should be a maximum of 81 feet.
Total head cannot be more than 106 feet as shown on next page.
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