EBARA DL Instruction Manual page 4

The handling and installation work of the pump shall be done only by a qualified
technician in accordance with the applicable legal standards. Unless follow the rule, the
work becomes illegal and there is a possibility of inducing accident such as fire and injury.
Mount a ground fault breaker exclusive to the pump. Recommended one is a wiring
ground fault breaker equipped with an electric leak alarm. There is a possibility of electric
shock and fire.
This submersible pump must be equipped with a main disconnect device in accordance
with requirements of appropriate legal standard (EN60204-1, clause 5.3.2). A suitable
Warning
rating over current protective device also needs to be provided in the final installation.
It is recommended to use a circuit breaker as main breaker that is suitable for isolation
according to appropriate legal standard (EN60947-2) and is equipped with an operating
handle which is lockable in OFF position and complies with the other requirements of
appropriate legal standard (EN60204-1, clause 5.3).
Do not operate a pump of 50Hz at 60Hz. The operation at wrong frequency induces break
of pump and other devices caused by excess pressure and motor burn-out caused by
overload.
Do not operate a pump of 60Hz at 50Hz. The pump performance deteriorates.
The pump cannot be used for food processing, food transportation, and other food-
relating uses. There is a possibility of generation of various bacteria and of inclusion of
foreign matter.
Do not use the pump at facilities for organisms (fish farm, fish preserve, aquarium, etc.)
There is a possibility of extinction of organisms caused by leak current or by leakage of
enclosed liquid from mechanical seal.
Do not use the pump at an important facility (computer cooling apparatus, cooling
apparatus for refrigerator, etc.)
Since machining oil, rubber-releasing agent, and foreign matter, used in pump-production
Caution
line, enter the handling liquid, operation of the pump shall be done after fully flushing the
pump to confirm the absence of foreign matter, depending on the facility.
Limit the handling liquid to water. Do not handle oil, seawater, organic solvent, etc. other
than water because these liquids cause trouble of pump to result in electric leak and
electric shock.
The pump is a submersible sewage pump. Do not operate the pump for a long period of
time or under vigorous startup-shutdown conditions. Such operations may lead to liquid
leak from mechanical seal to induce trouble of the pump within a short period of
operation.
If the pump failed to operate or if there occurred abnormality, immediately cut OFF the
power switch to prevent accident, and give request to the supplier or EBARA CORP. for
inspection and repair. Wrong operation and work may induce accident.
Install a stand-by pump preparing for an accidental stop of the operating pump. There is a
possibility of suspension of water supply to stop the facilities.
Consumable parts shall be regularly replaced. If the deteriorated or worn parts are used,
they may lead to serious troubles of water leak, seizing, and break of pump parts. For
regular inspection, parts replacement, and related works, request the work to the supplier
or EBARA CORP.
Do not lay the water level signal cable and the power cable in a single conduit. There is a
possibility of mal-functioning resulting from noise.
Assure the tightening of connection screws at the electric-conduction section. There is a
possibility of heat generation, trouble, and burn-out.
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