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3.5 Piping
1) Install piping carefully to prevent leaks.
2) Piping connected to the inlet should be at least 5 mm inside diameter.
3) Ensure that piping connected to the outlet does not cause back pressure. Maximum back
pressure is 0.03 MPa (gauge pressure).
4) In case of selecting the inlet pipe and exhaust pipe that are not from our products, please select
the exhaust pipe that has same or larger inner diameter length with the inlet pipe.
5) When evacuating a vessel, ensure that a shut-off valve is placed between the pump inlet pipe
and the vessel (see Fig.3.1).
3.6 Storage
Turn the switch OFF (set to O), remove the power plug from the outlet, place the rubber caps over
the inlet and outlet, and store the pump in an area of low humidity.
4. Cautions for Operation
4.1 Cautions for Operation
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1) To maintain the performance of the pump, always ensure that it is cleaned internally after use.
Clean by ingesting clean air for 3~5 minutes under no-load conditions.
2) Consult the manufacturer if the pump is to be used in a special application.
4.2 Operation of the Thermal Protection Relay
1) When the thermal protection relay operates, switch the pump power supply OFF (set to O),
remove the power cord from the outlet, and contact the manufacturer. Note that the pump will
be very hot and should not be touched.
2) The pump operates automatically when temperature drops. Shut-off the power supply, and
determine the cause of operation of the thermal protection relay.
3) Once the cause of the fault has been removed, wait until the motor cools and restart operation.
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Vacuum pump
Fig.3.1 Example of Piping Used When Evacuating a Vessel
Danger
Warning
Caution
Note
Caution
Shut-off valve Vessel
Filter
Leak valve
See Danger (1)(2),P04
See Warning (8),P06
(12)(13)(14), P07
See Caution (4)(5)(6)(7)(8), P07
See Note (2)(3)(4),P08
(5)(6)(7)(8)(9)(10)(11), P09
See Caution (6), P07
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