EBARA DL Instruction Manual page 9

Install this pipe joint near
the manhole.
Pipe
support
Sewage
check valve
Note
9) Mounting a full-water alarm in the tank is recommended. The alarm panel and the float switch for
water-level control are available from EBARA CORP.
10) When an electrode is used in the Automatic operation unit, care shall be paid not to entangle dirt
around the electrode rod or not to adhere oil to the rod. Those phenomena may induce error in
functioning.
11) Installation of an attaching-detaching device shall conform to the instruction manual "Quick
Discharge Connector".
Packing materials after installation, and wasted lubricant oil and grease, and parts after
Note
inspection and repair shall be transferred to a qualified waste-treatment contractor observing
the applicable laws and the regional regulations.
Install a stand-by pump preparing for an accidental stop of the operating pump.
Caution
There is a possibility of suspension of water supply to stop the facilities.
12) For automatic pumps (DLA), install the floats as shown in Fig. 4. The pump may not start if a
float switch touches the wall of the water tank or the piping. Install the float so that this will not
happen.
13) Models DLA and DLJ will undergo automatic alternate operation only when they are paired.
Position the floats for these automatic alternate operation pumps (DLJ) as shown in Fig. 5. The
pumps may not operate correctly if the floats are in the wrong position.
Use a ground fault
Power
breaker
supply
Suspens
ion wire
Inlet
Attach the end of
the wire near the
manhole.
Fig. 2
Limit the continuous operation time at the operable minimum water level to 10
minutes. Operation longer than 10 minutes actuates Auto-cut in the motor to
stop the operation of the pump.
Operating water level
Stop water level
The float must not be placed
lower than this position.
Fig. 4
Fig.3
Pump No. 1
Pump No. 2
(DVJ type)
(DVA type)
Fig. 5
- 9 -
80 mm or more
30 mm or more
EBARA
CORPORATION
.