EBARA DDLFMU - Manual (Page 7)

Ebara Submersible Sewage Pumps DDLFU/DDLFMU
Instruction Manual
Ebara Fluid Handling
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(803) 327-5005 • (803) 327-5097 (fax) rev. 10/11
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) 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. 3 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
thermal protector 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:
(1) Model DDLFU
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
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.
Caution
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.
Fig. 3
warning
Disconnect power cable from power source before servicing unit.
Normal maintenance should be done by qualified personnel.