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Note
Installation
(1)
The pump may malfunction if it is subjected to shocks or
tipped over on its side.
(2)
Do not hold or push the tube at the top of the pump (see below). Damage to
the tube may affect performance of he pump.
Applications
(3)
This pump is not designed to be corrosion-proof. Use it only with clean air at normal temperature,
or with gases of equivalent characteristics.
(4)
This pump is designed for general corrosion resistance, however it is not resistant to molten
alkali metals such as molten sodium, to fluorine at high temperatures, and to some oxides of
fluorine.
(5)
Corrosion-resistant plastic is used in the external covering of the DTU-20, however it is not
resistant to all chemicals.
Ensure that the following chemicals do not come in contact with the pump. Any chemical,
including the following, which comes into contact with the pump should be wiped off immediately.
• Strong acid・ Acetone • Ethyl ether • Ethyl acetate • Animal fats
Installation
(6)
Ingestion of liquids or compressed and gases into the pump will result in damage and prevent
proper operation.
(7)
Ingestion of rubbish and dust in the air entering the pump will interfere with its proper function. If
the air is likely to contain rubbish or dust, a filter should be fitted to the inlet to protect the pump.
(8)
Ducting should always be fitted to the pump outlet if toxic corrosive gases, or steam, enters the
pump.
Operation
(9)
Use the pump within an ambient temperature range of 40°C. Use at high ambient temperatures
will dramatically reduce the life of the pump.
(10) Back pressure at the outlet while the pump is starting may overload the motor.
(11) The thermal protection relay operates when the pump reaches a very high temperature.
Touching the pump in this condition may result in burns.
(12) 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.
Maintenance and Repair
(13) The fine clearances used in this pump require skill in its assembly. If a repair technician is
unavailable, replacement of all consumables should be left to the manufacturer's service
division.
08
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