Tsurumi Pump LB-250, Руководство по эксплуатации

Страница: 23 / 32

-6-
(1) When a hose is used, attach the hose to the
hose coupling as far as it will go, then fasten it
securely with a hose band.
(3) Operate the pump in a location that has a sufficient water level and collects water easily.
Note:
For the water level required for
operating the pump, refer to the
external dimension drawing, which is
provided separately.
Extend the end of the hose (discharge
side) above the water surface. If the
end of the hose is submerged in water,
it may cause the water to flow back
when the pump has been stopped.
Conversely, if the end of the hose is
located at a level that is lower than
the source water surface, water may
continue to flow out even after the
pump has been stopped.
Precautions During Installation
WARNING
When installing the pump, be mindful of the pump's center of gravity and
weight. If the pump is not suspended properly, the pump may fall and break,
which may lead to injury.
CAUTION
When installing or moving the pump, never suspend the pump by the cabtyre
cable. Doing so will damage the cable, which may cause a current leakage,
electrical shock, or fire.
CAUTION
The rope for suspending the pump during its installation
must be of a thickness that accommodates the weight
of the pump. When using a chain, make sure that the
chain does not become twisted. Failure to observe these
precautions could cause the rope or chain to break and
the pump to fall and break, which could lead to personal
injury.
(2) Handle the pump carefully without applying shock to it, such as by dropping it. To
suspend the pump, do so manually or by attaching a rope or chain to its handles.
Hose Band
Hose
Discharge Connection
Hose Coupling
Rope
Backflow Outflow
Pump stopped
Three-phase power supply:
Use a megger to measure the resistance be-
tween each core of the cabtyre cable and the
(green) ground wire to verify the insulation
resistance of the motor.
Insulation resistance reference value
= 20M Ω minimum
Note:
The insulation resistance reference value of 20M Ω minimum is based on a new or repaired
pump. For reference values of a pump that has already been put into operation, refer to "7.
Maintenance and Inspection" of this manual.
U-Red(Brown) G-Green(Green/Yellow)
W-Black(Black) V-White(Blue or Grey)
MΩ
U V W G
Three-Phase