DOOVAC SML-280 User Manual - Page 4
Browse online or download pdf User Manual for Water Pump DOOVAC SML-280. DOOVAC SML-280 11 pages.
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I. Product Description
1. O p erating Conditions
This SML type, oil-less vacuum pump is designed and manufactured in accordance with the
following operating conditions:
◈ Air and inert gases
◈ Inlet gas temperature: 0℃ ~ 42℃
◈ Ambient temperature: 5℃ ~ 40℃
◈ Operating pressure: below the maximum pressure achievable by the pump
◈ Others: The performance of the product may vary according to the operating conditions and use.
Please contact us for the optimal specifications before placing an order with us.
Processing high-density gases may cause critical damage to the product; therefore it is strictly
prohibited to use this product for high-density gases.
The maximum pressure of the product is tested at our factory before shipping.
2. O p erational Principles and Functions o f the Major Parts
2-1) Operational Principles
Suction
This product is a dry, vane-type vacuum pump comprising a rotor, vanes, and cylinder. The rotor
and cylinder are eccentric with each other. 4~6 vanes rotates in contact with the cylinder inner wall
by centrifugal force. The volume of the spac e (cell) between the vanes varies, generating vacuum
pressure by suction, expansion, compression, and exhaustion.
The vacuum at the inlet and positive pressure at the outlet are generated continuously thanks to the
superior lubrication and wear resistance of the carbon vanes.
Dry type rotary vane pumps have a higher operating temperature than that of oil-circulating types.
Therefore, though the carbon vanes have an excellent lubrication effect and wear resistance, they
need to be replaced after long-term operation. (See Vane Replacement of Maintenance section.)
3. Co o ling
Expansion
Compression
Exhaustion