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Operation
WARNING
The pump may be extremely hot during operation. To prevent burns, do not
touch the pump with bare hands during and immediately after an operation.
Pay attention to the water level during the pump operation. The pump will become
damaged if it is
allowed to operate dry.
If the motor protector trips to stop the pump due to an overload operation or a pump
malfunction, make sure to eliminate the cause of the problem before restarting.
To operate the submersible pump automatically, set the water level so that the pump will
operate about 10 times per hour.
Note:
A large starting amperage flows through the submersible motor, which causes the tem-
perature in the windings to rise suddenly. Continuing to operate the pump in this manner
will accelerate the deterioration of the insulation of the motor windings, which will affect
the life of the motor. For this reason, minimize the frequency of starting and stopping the
pump.
Operating Water Level
CAUTION
Do not operate the pump
below the continuous
running water level longer
than 30 minutes, as it
could damage the pump,
causing current leakage
and electrical shock.
Trial Operation
WARNING
Never start the pump while it is suspended, as the pump may jerk and cause
a serious accident involving injury.
(1) Operate the pump for a short time (3-10 minutes) and verify its operating conditions.
CAUTION
If the pump generates a considerable amount of vibration, noise, or smell,
disconnect the power supply immediately and contact the dealer where the
pump purchased, or the Tsurumi sales office in your area. If the pump is
continued to be used in the abnormal state, it may cause current leakage,
electrical shock, or fire.
(2) Continue operation if no abnormal conditions are found during the trial operation.
Lowest running
water level (L.W.L.)
Continuous running
water level (C.W.L.)
70mm
280mm
