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Idiomas disponibles
Idiomas disponibles
OPERATION -----------------------------------------------------------------
1. Preparation for operation
1) When the VKN series (self-priming type) are to be started for the first time after installation or
operated again after they have been left unused for a long time, be sure to carry out priming
with fluid.
Never operate the pump without priming, as it damages the shaft seal (mechanical seal).
2) Priming should be carried out until the air in the pump is completely removed through the outlet
(no air at the end of suction pipe).
When the priming is not completed and the pump is operated, the fluid cannot be pumped up
or the shaft seal may be damaged. Also, when the height from the outlet of the pump to the
priming fluid injection port ("H" shown in the figure) is lower than the length ("L" shown in the
figure) of the suction pipe immersed in the fluid, the priming fluid may not be fed sufficiently to
the pump. In such a case, an air vent should be provided on the suction pipe or the priming
fluid injection port should be positioned higher.
3) The VKP (immersion type) and VKS (high-pressure immersion type) series require no priming.
2. Direction of rotation
1) The motor must rotate to the left when viewed from above. A transparent cap is provided on
top of the motor for easy inspection. The direction of rotation must be in the same direction as
indicated by the arrow on this transparent cap.
IMPORTANT
Notes: (The VKS 152AC and VKR series are designed for right rotation. Transparent cap is not
provided with the VKN/VKP 093A, 113A, 095A, 115A, VKR series and VKS series. The
rotating direction can be checked by the rotation of the external fan.)
2) Check the pump for unusual current, vibration and noise. If any trouble is apparent, take
necessary steps referring to the "Troubleshooting".
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