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ATTENTION
(7)
The pump may be damaged and normal operation cannot be expected. Do not suck fluid.
(8)
Do not suck gas that contains trash and dust. Normal operation of the pump may be jeopardized.
In case there is possibility to such trash and dust, mount filters at inlet port to remove them to
protect a pump
(9) Corrosion-resistant plastic is used in the external covering of the DA-41D, DA-81S 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.
• Acetone • Ethyl ether • Ethyl acetate • Animal fats
<Operation>
(10) Please use the pump in ambient temperature in range of 0 to 40℃.
If the temperature was over 40 degrees, put a cooling fan or similar device to cool it down to the
ambient temperature. If operated in high temperature, life of the pump shall be extremely
reduced.
(11) Do not apply back pressure in the pump exhaust side when start. Load to the motor may cause
starting operation failure.
(12) When the thermal protector is operated, the entire pump is hot. Do not touch the pump by hands
definitely.
There is a risk of burn.
(13) It is effective to clean internal pump when stopped operation in order to maintain pump
performance.
Have the pump to absorb clean air for 3 - 5 minutes and conduct idling operation.
<Maintenance / repair>
(14) This pump is a machine having precise clearance. In case there is no repair engineers, request
replacement of consumable parts that require assembling technology to ULVAC Service Section.
07
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