Tsurumi PL Pumps - Manual (Page 11)

CAUTION !
1.7 Electrical Wiring (cont.)
Power Cable
1.8 Electrical Circuit Diagrams
FIGURE 1.2 POWER SOURCE SINGLE PHASE
If it is necessary to extend the power cable, use a core
size equal to or larger than the original. This is
necessary not only for avoiding a performance drop,
but to prevent cable overheating which can result in
fire, electrical leakage or electrical shock.
If a cable with cut insulation or other damage is
submerged in the water, there is a danger of damage
to the pump, electrical leakage, electrical shock,
or fire.
Be careful not to let the power cable be cut or become
twisted. This may result in damage to the pump,
electrical leakage, electrical shock, or fire.
If it is necessary to submerge the connection wires of
the power cable in water, first seal the wires completely
in a molded protective sleeve, to prevent electrical
leakage, electrical shock, or fire.
DO NOT allow the power cable wires or power supply
plug to become wet.
Make sure the cable does not become excessively
bent or twisted, and does not rub against a structure
in a way that might damage it.
If used in a deep-well installation the power cable
should be secured every twenty feet.
CAUTION !
If connected to a circuit protected by a fuse, use a
time-delay fuse with this pump.
1-7
T SURUMI P UMP
Red Red
Capacitor
Blue
Black
Aux. Coil Main coil
Protector
White White
Green/Yellow Green
Ground
Frame Grounding
4000SP02
WARNING !
CAUTION !
CAUTION !
1.9 Operation
Before starting
1. Make sure once again that the product is of the correct
voltage and frequency rating.
ATTENTION: Using the product at other
than rated voltage and frequency will not
only lower its performance but may damage
the product.
Note: Confirm the rated voltage and frequency on the
model nameplate.
2. Confirm the wiring, supply voltage, circuit breaker
capacity, and motor insulation resistance.
Reference insulation resistance = 20 MΩ or greater.
Note: The reference insulation resistance (20 M Ω
or greater) is the value when the pump is new or has
been repaired. For the reference value
after installation see Section 1.10 Maintenance
and Inspection.
3. The setting on the circuit breaker or other overload
protector should be made in accord with the rated
current of the pump.
Note: See Section 1.5 Standard Specifications for
its rated current.
Test operation
In case of very excessive vibration, unusual noise or
odor, turn off the power immediately and consult with
your nearest dealer or TSURUMI representative.
Continuing to operate the pump under abnormal
conditions may result in electrical shock, fire, or
electrical leakage.
Operation
NEVER start the pump when people are standing
next to it. An electrical leak can result in
electrical shock.
Run the pump for a short time (3–10 minutes) and confirm
the following:
• Using an ammeter (clamp-on type), measure the
operating current at the L1 and L2 phase wires on
the terminal.
COUNTERMEASURE: If the operating
current exceeds the rated value, pump motor
overload may be a cause. Make sure
the pump has been installed under
proper conditions as described in
Section 1.6
Installation .
• Using an AC voltmeter (tester), measure voltage at
the terminals. Supply voltage and name plate voltage
should match.
COUNTERMEASURE: If the supply voltage
is outside the tolerance, possible causes
are the power supply capacity or an
inadequate extension cable. Look again at
Section 1.7
Electrical Wiring and make sure
the conditions are proper.
The pump may become very hot during operation. Be
careful not to contact the pump accidentally to avoid
being burned.
Make sure no extraneous objects such as pins, nails
or other metal objects are sucked into the pump.
These can damage the pump or cause it to malfunction,
and can result in electrical shock or electrical leakage.
When the pump is not used for an extended period, be
sure to turn off the power (circuit breaker, etc.).
Deterioration of the insulation may lead to electrical
leakage, electrical shock, or fire.
In case of a power outage, turn off the power to the
pump to avoid having it start unexpectedly when the
power is restored, presenting serious danger to people
in the vicinity.
WARNING !
NEVER operate the pump while it is suspended in the
air. The recoil may result in injury or other
major accident.
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T SURUMI P UMP
PL