To stop the pump, turn off the power. A built in anti-suck back valve will prevent oil from the oil reservoir being
sucked back into the cylinder after the pump is shutdown.
Do not utilize the anti-suck back valve as a check valve. Consult Airtech Inc. for proper check valves.
2.3 Gas Ballast
L-Series pumps are equipped with a gas ballast. The gas ballast valve is located between the inlet port and the
exhaust box. Its main function is to prevent water vapor from condensing in the pump that causes
emulsification of the oil resulting in possible pump failure.
In applications involving a moderate quantity of water vapor, it is recommended to run the pump for 10 minutes
at normal operating temperature, prior to going on process. The pump should also be operated off process for
10 minutes prior to shut down. A slight air bleed (purge) is recommended during these 10-minute cycles to
prevent the vapor from condensing in the pump.
3.0 MAINTENANCE
L-Series vacuum pumps require very little maintenance. To ensure optimum performance, the following
maintenance steps should be followed:
3.1 Pump Oil
3.1.1 Oil Level
Under normal circumstances it should not be necessary to add oil between oil changes. A significant drop in oil
level means there is either an oil leak, a defective exhaust filter or O-ring, or a leaking anti-suck back valve. If
the pump is smoking excessively, the exhaust filter may be installed improperly.
It is normal for the oil to be foamy or lightly colored in an operating pump. This may be normal aeration of the
oil. If the oil appears milky or dark colored, it is contaminated or burned and must be changed.
Check the oil level only when the pump is shut off. Replenish oil if it drops below the ¼ mark of the top sight
glass. Oil must be added through the oil fill port only.
Caution: Do not add oil while the pump is running, since hot oil can escape from the oil fill port.
3.1.2 Oil Type and Quantity
See section 1.5 -Oil Filling -for details on oil type and quantity
3.1.3 Oil Change
When using ATO-1000 oil, it is recommended to change the oil every 500-750 operating hours.
When using ATO-2000 oil, it is recommended to change the oil ever 750-1000 operating hours.
Oil change frequency is dependent upon the application and ambient temperature. It is recommended that the
customer monitor the condition of the oil during this period.
3.1.4 Oil Spin-On Filter
Replace automotive-type spin on filter at every oil change.
To Next Page
Loading...