EBARA CVU - Manual (Page 9)

EBARA Submersible Sewage Pumps DVU
Operating, Installation, and Maintenance
EBARA Fluid Handling
www.pumpsebara.com 9
(t) 803 327-5005 • (f) 803 327-5097 rev. 08/10
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 10 HP) or the thermal detector (more than 15 HP) 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 DVU
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.
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. 4