ASP sterrad NX, Service & Troubleshooting Manual

Page: 102 / 126

6
Maintenance
Vacuum Pump Oil Replacement
All procedure on the vacuum pump can be performed with the pump in
place if needed, otherwise, remove the vacuum pump and perform the
procedures.
✔
Note: Always change the pump oil while the pump is
warm to prevent condensation from remaining in
the pump.
CAUTION: Do NOT slide the service tray all the way out. It will tip
the pump over.
1. Unscrew and remove the oil fill plug located at the top of the pump.
✔
Note: The drain hose is in the PM kit.
2.
Remove the cap from an empty oil bottle.. Place an oil absorbing
cloth under the bottle and as close to the drain valve hose as possible.
Place the
bottle on the cloth. Place the hose in the bottle, open the drain
valve and drain the oil.
3. After the flow has stopped, close the drain valve. Make sure the main
circuit breaker is off before proceeding.
✔ ✔
Note: If the used pump oil is excessively dirty,
flush out the pump according to the Vacuum Pump
Flush procedure.
4. Open a new bottle of pump oil and replace the cap with the oil filler
cap (red tipped). Remove the red tip and cut about 1/6 to 1/4 inch off
the cap tip so the oil flows freely.
5. Pour new pump oil (slightly less than one quart) into the oil fill port
until oil reaches between the top two fill marks. DO NOT OVER
FILL or attempt to empty the oil bottle. Some oil may remain in the
bottle when the pump oil is at the specified fill level.
6. Replace the oil fill plug. Re-cap and dispose of the drained oil and
the oil absorbent cloth following standard hospital procedures.
102 STERRAD
®
NX
™
Service Guide