~ 4 ~
are shown on the pump nameplate.
Ve r i f y i f t h e s e d at a m atc h yo u r
electricity supply. A Residual current
device (RCD, 30mA) should be installed
a n d t h e gro u n d i n g b e p ro p e r l y
connected for your safety.
5.4. Motors must be connected to a motor-
protective circuit breaker which can
be manually reset. Set the motor-
protective circuit breaker according
to the rated current of the motor. See
nameplate.
5.5. Make electrical connection in accordance
with connecting diagram located inside
the connection box. The motor current
must be within the rated amps range
indicated on nameplate. Three phase
motor requires a magnetic starter for
safety.
5.6. For three phase motors, please check
the correct direction of rotation of the
pump on the motor fan cover. When
seen from motor fan cover end, the
pump should rotate clockwise. You
can reverse the direction of rotation by
interchanging any two of the incoming
supply wires.
6. Start-up
Before starting the pump, make sure the
following:
6.1. For three phase motors, verify if the
rotating direction is correct. It should be
clockwise viewing from the motor fan
cover end.
6.2. All piping joints are completely tight.
Leakage in piping may cause the pump
hydraulic loss.
6.3. The pump is filled with liquid.
6.4. The suction filter is not blocked by any
foreign objects.
7. Operation and Maintenance
It is dangerous to operate the
pump against a closed discharge
outlet because it will cause
ex tremely high liquid flow
temperature and damage the
pump in a few minutes.
7.1. Lubrication
The mechanical seal and shaft sleeves
are lubricated by the pumped liquid.
7.2. Suction filter
Always keep suction filter clean and
make sure it is not blocked by impurities.
7.3. Periodic checks
The following checks should be carried
out periodically to ensure the normal
operation.
7.3.1. Check the quantity of liquid and
operating pressure.
7.3.2. Check there are no leaks on piping
joints.
7.3.3. Check the tripping of the motor
starter.
7.3.4. Check that all controls are
functioned normally.
7.4. The pump must not be used to transfer
explosive liquids. In systems with hot
liquids (over 60°C), extra caution should
be exercised to prevent from personal
injury.
7.5. The pump should not be used to transfer
toxic or contaminated liquids. Please
carefully follow all instructions in the
manual as Walrus may refuse to accept
the contaminated pump for servicing.
7.6. If the supply cord is damaged, it must be
replaced by a special cord or assembly
available from the manufacturer or its
service agent.
8. Wiring diagram