Ulvac GR60, Инструкция по эксплуатации

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Instructions Manual － Multiple Roots Type Dry Pump GR60/90/180
YK09-0023-DI-003-02
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6. Removal
6.1 Electric connection
Install and operate this product according to the local and national safety
laws and regulations (such as fire laws and electric wiring code).
(1) Check that no current is applied using a tester etc.
(2) Remove the screws in the motor terminal box and disconnect the pump from the power supply.
Before removal, be sure to disconnect it from the power supply.
6.2 Cooling water pipe
(1) When removing the cooling water joints immediately after the pump
operation stops for a model with hermetically sealed connections,
the cooling water remaining in the pump may boil with an inner
pressure increase, causing damage to the cooling water pipes.
Supply cooling water until the pump temperature becomes low.
(2) Before removal of the cooling water pipes, close the feed valve of
cooling water.
(3) This product uses vinyl tubes as cooling water pipes. If the cooling
water inlet or outlet is sealed and compressed air is supplied from
the non-sealed port, the cooling water pipes may not be able to
withstand the load of the compressed air and be broken. When
supplying compressed air into the cooling water pipes, be sure to do
that with one port open.
Disconnect the cooling water port from the cooling water pipe.
At 0 ﾟ C or lower, water is frozen, damaging the cooling water pipes. At the time of storage, be sure
to drain. Drain the pipe following the procedure below.
(1) Supply compressed air from the cooling water inlet port (at the upper part).
(2) After the compressed air is discharged from the cooling water outlet port (at the lower part), the
drain procedure is completed.
Furthermore, it is not matter if the inlet and the outlet is switched. In addition, pay attention to the
release speed of the compressed air. If the release speed is too high, the cooling water
accumulated in the cooling water pipe furiously. Pay attention to the peripheral electronic devices
etc.
WARNING
WARNING
WARNING