TriStar II 3020 Scheduled Maintenance Instructions Maintenance (Power Disconnected)
Jun 09 7
Changing the Vacuum Pump Oil
These instructions apply to oil-based vacuum pumps only.
1. Unplug the vacuum pump from the power source.
2. Loosen the wing nut on the clamp at the top of the oil vapor trap. Swing the clamp open
and remove the trap from the hose.
3. Grasp the handle on top of the vacuum pump and place it on a work table.
4. Drain the used oil:
a. Place a waste container under the drain spout.
b. Remove the plug from the drain spout; allow the oil to drain into the waste container.
Always drain the vacuum pump while the pump is warm and disconnected from the
power source.
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