Instructions Manual
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Multiple Roots Type Dry Pump GR60/90/180
YK09-0023-DI-003-02
vii
Stop
For a while after the operation stops, do not touch the vacuum pump,
motor, and pipes since they are subjected to high temperature. If your
body comes into contact with them, you may get burned. Supply cooling
water until the pump temperature becomes low.
Inspection/Repair
(1) Before inspection/repair, be sure to turn off the power switch.
Otherwise the vacuum pump suddenly starts to operate and you may
get injured.
(2) Any person other than service engineers is not allowed to
disassemble or repair/modify at all. Otherwise ignition or abnormal
action may occur and you may get burned or an electric shock.
(3) If the product does not work or there is an error, immediately turn off
the power switch to prevent any accidents and please always ask the
shop you purchased it or the nearest service center to inspect/repair.
Power Cable <Removal>
Before removal, be sure to disconnect it from the power supply.
Cooling Water Piping <Removal>
(1)
For during operation, and for some time after the operation stops, do
not touch the vacuum pump, motor, and pipes since they are
subjected to high temperature. If your body comes into contact with
them, you may get burned. Supply cooling water until the pump
temperature becomes low.
(2) 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.
(3) Before removal of the cooling water pipes, close the feed valve of
cooling water.
(4) 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.
WARNING
WARNING
WARNING
WARNING
