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EBARA End Suction Centrifugal
Operating, Installation, and Maintenance
Rules for Safe Installation and Operation (continued)
DISCHARGE PIPING – Discharge piping should never be smaller than pump tapping and should preferably be one size
larger. A gate valve should always be installed in discharge line for throttling if capacity is not correct. To protect the pump
from water hammer and to prevent backflow, a check valve should be installed in the discharge line between the pump and
gate valve.
ELECTRICAL CONNECTIONS – Be sure motor wiring is connected for voltage being used. Unit should be connected to a
separate circuit. A fused disconnect switch or circuit breaker must be used in this circuit. Wire of sufficient size should be
used to keep voltage drop to a maximum of 5%.
Single phase motors have built-in overload protection. Flexible metallic conduit should be used to protect the motor leads.
PRIMING – The pump must be primed before starting. The pump casing and suction piping must be filled with water before
starting motor. When water is poured into pump to prime, remove all air before starting motor.
STARTING – When the pump is up to operating speed, open the discharge valve to obtain desired capacity or pressure.
WARNING! DO NOT ALLOW THE PUMP TO RUN WITH THE DISCHARGE VALVE TIGHTLY CLOSED. IF THE PUMP
RUNS FOR AN EXTENDED PERIOD OF TIME WITHOUT LIQUID BEING DISCHARGED, THE LIQUID IN THE PUMP
CASE CAN GET EXTREMELY HOT CAUSING SEVERE DAMAGE TO THE PUMP AND POSSIBLY CAUSE INJURY TO
PEOPLE.
ROTATION – All single phase motors are single rotation and leave factory with proper rotation. Three phase motors should
be checked to ensure proper rotation
FREEZING – Care should be taken to prevent the pump from freezing during cold weather. It may be necessary, when there
is any possibility of this, to drain the pump casing when not in operation. Drain by removing the pipe plug in the bottom of the
casing.
ROTARY SEAL – PRO STEEL pumps are fitted only with rotary seal. This seal is recommended for LIQUIDS free from abrasives.
LOCATION OF UNIT – The pump should be installed as near to the liquid source as is practical so that the static suction
head (vertical distance from the center line of the pump to water level) is maximized, and so that a short, direct suction pipe
may be used. The capacity of a centrifugal pump is reduced when the unit is operated under a high suction lift. The piping
should be as free from turns and bends as possible, as elbows and fittings greatly increase friction loss. Place the unit so that
it is readily accessible for service and maintenance and on a solid foundation, which provides a rigid and vibration-free sup-
port. Protect the pump against flooding and excess moisture.
EBARA Fluid Handling
www.pumpsebara.com
(t) 803 327-5005 • (f) 803 327-5097
3U / 3UB
4
rev. 02/09
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