Start Up And Use; Maintenance - EBARA DL Operating And Maintenance Instructions Manual

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).
Support the cable by attaching it to the
delivery pipe.
Avoid exposing the cable to direct sunlight or
twisting it to prevent overheating.
Follow the diagram in Fig. 14.3.1 - page 140 according
to the type of connection indicated in the table for wiring.
Submerge the pump and start it. If current exceeds
nameplate, flow is reduced and the pump emits unusual
noises, the motor may be rotating in the opposite direction.
Reverse two phases on the control panel.
The circuit breaker may suddenly trip especially in the pump
start up phase if power cable are very long. To prevent this
problem, install a less-sensitive circuit breaker.
Pumps are protected against overheating by motor protection
or overload protection (see paragraph 7.2).
- Motor protection: automatically trips when a certain
temperature is reached in the motor;
- Overload protection: this is connected to the control
panel and should be accompanied by an ampere meter
or magnetic relay. It has the following features:
i) contacts: 230 V, 13 A (max);
ii) type: normally closed;
iii) cable: 2 chloroprene cable with non-polarised
1 mm section.
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10. START UP AND USE

Avoid using the pump with delivery fully
open.
Avoid operating the pump without water.
Do not use the pump if people or animals are
in contact with water.
Limit hourly starts to that indicated in Chapter
7.2.
Do not use the pump for more than 10 minutes
if the water level is near the minimum operating
WARNING!
level (H1 - Fig. 14.2.1 - page 140) to avoid
overheating the motor.
After connecting the pump, turn it on and off a couple
of times with the delivery valve slightly open to check
the system.
Turn on the pump and gradually open the delivery valve
until the required flow is reached.

11. MAINTENANCE

All maintenance that requires the pump to
be dismantled and reassembled should be
conducted by a specialised technician.
All maintenance should be conducted with the
pump disconnected from the power mains.
Do not attach parts other than EBARA's
standard parts, and do not modify EBARA's
standard products.
To stop operation for a certain period, cut OFF
the power switch.
If the insulation resistance decreases to 1MΩ
or less, cut immediately OFF the power switch,
and request the inspection and repair of the
pump to the supplier or EBARA CORP.
Perform routine maintenance according to the following
table.
PART
Mechanical seal
Flange gaskets
Seal washer
O-rings
Bearings
Lubricant
oil
Top up and change oil (type ISO VG32; CAS 8042-47-5)
through the hole on the side of the motor placing the pump
horizontally (see Fig. 14.4.1 - page 141). Make sure the
amount of lubricant indicated in table 14.4.2 - page 141
is in the oil chamber.
Do not mix the oil type ISO VG32 and type CAS
WARNING!
8042-47-5 when top up or change.
The pump should be overhauled every 2-5 years according
to use.
FREQUENCY/EVENT
- Once a year or after
6,000 operating hours,
whichever comes first
- Water in the oil
Whenever dismantled
Whenever oil is changed.
Whenever dismantled
Every 6,000 hours
Once every 6 months
EN
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