EBARA CVU - Manual (Page 5)

EBARA Submersible Sewage Pumps DVU
Operating, Installation, and Maintenance
EBARA Fluid Handling
www.pumpsebara.com 5
(t) 803 327-5005 • (f) 803 327-5097 rev. 08/10
Installation
2. Pump Installation
1. Clean the installation area.
2. Under no circumstances should the cable be pulled while
the pump is being transported or installed. Attach a chain
or rope to the grip and install the pump.
3. This pump must not be installed on its side. Ensure that it
is installed upright on a secure base.
4. Install the pump at a location in the tank where there is
the least turbulence.
5. If there is a flow of liquid inside the tank, support the
cable where appropriate (See Fig. 1).
6. Install piping so that air will not be entrapped. If piping
must be installed in such a way that air pockets are
unavoidable, install an air release valve wherever such air
pockets are most likely to develop.
7. Do not permit end of discharge piping to be submerged,
as backflow will result when the pump is shut down.
8. Non-automatic pumps (model DVU) do not have an
automatic operating system based on built-in floats. Do
not operate the pump for a long time with the water level
near the minimum operating level as the automatic cut-off
switch incorporated inside the motor will be activated.
To avoid dry operation, install an automatic operating
system, as shown in Fig. 2 and maintain a safe operating
water level.
WARNING
When lifting the pump, use appropriate crane (or hoist) and lift system, check position and tightness of lift system
so that weight of the pump is not UNBALANCED.
Failure to observe this precaution can result in serious accidents.
Handle the cables very carefully. If they are bent or pulled excessively, the cable and the moulded seal may be
damaged, resulting in insulation failure. Also, care is needed to protect cable ends against water intrusion.
CAUTION
Before installation check rotation. Correct rotation is clockwise when viewed from top of motor. Read ELECTRICAL WIRING.
Fig. 1
Fig. 2
H
1
: Operating water level
This must be above the top of the motor.
H
2
: Lowest water level (motor flange)