EBARA Submersible Semi-vortex Sewage Pumps
DVSU/DVSHU
Operating, Installation, and Maintenance
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 DVSU, DVSHU) 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
Size
Output
L
(inch)
(HP)
(inch)
2
1/3-5
4 1/8
1-2
4 15/16
3
3-5
6 1/8
CALL 1-800-577-8111 FOR SALES AND SUPPORT