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EBARA Submersible Semi-vortex Sewage Pumps
Operating, Installation, and Maintenance
Installation
(2) Cable
a) Never let the end of the cable contact water
b) If the cable is extended, do not immerse the splice in
water.
c) Fasten the cable to the discharge piping with tape or
vinyl strips.
d) Install the cable so that it will not overheat.
Overheating is caused by coiling the cable and exposing
it to direct sunlight.
(3) Grounding
As shown in Fig. 4 ground the green wire (label E). Under
no circumstances should the green wire be connected to
the power supply.
(4) Use short circuit breakers to prevent danger of electrical
shock.
Operation
1. Before starting the pump:
(1) After completing installation, measure the insulation resistance again as described in INSTALLATION.
(2) Check water level.
If the pump is operated continuously for an extended period of time in a dry condition or at the lowest water level, the
motor protector (less than 5HP) will be activated.
Constant repetition of this action will shorten pump service life. Do not start the pump again in such a situation until after
the motor has completely cooled.
2. Test Operation:
Check rotation. Correct rotation is clockwise when viewed from top of motor. Pump should be started with gate valve
closed, and then the operator should open the valve gradually.
(1) Model DVSU, DVSHU
a) Turn the operating switch on and off a couple of times to check for normal pump start.
b) Check the direction of rotation. If discharge volume is low or unusual sounds are heard when the pump is operating,
rotation has been reversed. When this happens, reverse two of the three wires.
c) Check amperage, voltage, and head pressure.
Maintenance and Service
Disconnect power cable from power source before servicing unit.
Normal maintenance should be done by qualified personnel.
Check pressure, output, voltage, current, vibration, and other specifications. Unusual readings may indicate a problem requiring
immediate service. Contact your local EBARA INTERNATIONAL CORPORATION representative as soon as possible.
CALL 1-800-577-8111 FOR SALES AND SUPPORT
CAUTION
WARNING
DVSU/DVSHU
Fig. 4
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