Teral VKA-e, Руководство пользователя

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4-2
Warning
Before rotating the main shaft by hand to check it, be sure to turn off the main
power. A sudden startup of the pump may cause an accident.
(4) Open the air vent valve to release air. After the air release, close the air vent valve.
If no air vent valve is provided, open the valve on the discharge piping to release air.
(5) If you run the pump while changing the speed with the inverter, ensure to check the following
points through test operations.
• The pump may produce resonance depending on installation conditions. If the pump produces
resonance, avoid that frequency.
• If the operation frequency is low or the dynamic viscosity of the liquid is high, the pump may
not discharge any liquid.
• Do not run the pump at a frequency exceeding 60 Hz. Failure to observe this may cause the
motor to burn out.
Caution
Do not run the pump at a frequency exceeding 60 Hz. Failure to observe
this may overload the motor, causing it to burn out.
4.2 Running the pump (test operation)
Warning
Be sure to install the cover of the terminal box of the motor.
Failure to observe this may cause an electric shock.
Warning
If you find any abnormal conditions during the check prior to test operation,
do not run the pump with parts etc. under abnormal conditions. Failure to
observe this may cause an injury, failure, accident, etc.
Warning
When the liquid used exceeds 40°C, do not touch the pump.
Failure to observe this may cause the operator to suffer a burn due to high
temperature of the pump.
Warning
Do not touch the motor during operation or immediately after the stop of
operation.
Failure to observe this may cause the operator to suffer a burn due to high
temperature of the pump.
(1) Check the rotational direction of the pump by turning on and off the power switch once or twice.
Normal rotational direction is counterclockwise rotation when viewed from the motor side.
If the pump rotates reversely, replace two of the three wires of the power cable.