Robinair Models 15402 - Manual (Page 9)

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3. Verify the pump oil is clean. A badly contaminated pump may require
several oil flushes. See OIL CHANGE PROCEDURE.
Note: Use only high vacuum pump oil such as Robinair’s Premium High
Vacuum Pump Oil. Other oils will prevent pull-down to a deep vacuum.
4. Verify the gas ballast knob is tightly closed.
5. Verify the oil is at the correct level. For maximum pump operation, the
oil must be even with the OIL LEVEL line on the sight glass when the
pump is running. See OIL CHANGE PROCEDURE. Do not overfill —
operating temperatures will cause the oil to expand so it will appear at a
higher level than when the pump is not running. To check the oil level,
start the pump with the inlet capped. Check the oil level in the sight
glass. Add oil if necessary.
If these procedures do not correct the problem, contact your nearest
Robinair distributor. The distributor may recommend an additional
replacement part (this manual contains a parts list) or suggest you send
your pump to the nearest authorized service center.
Warranty Coverage
Robinair vacuum pumps are warranted against defects in material and
workmanship for one year of normal use from the date of purchase. See
your distributor for warranty details.
A pump that is no longer covered by the one-year warranty period, and
which fails to operate correctly, should be returned to the distributor with
a full written explanation of the problem. The distributor may suggest
returning the pump to the factory or to an authorized Robinair service
center.
Before returning an out-of-warranty pump, review all maintenance
procedures to avoid an unnecessary return. Note that contaminated
oil or an incorrect oil level will adversely affect pump performance.
Replacement parts are available for doing your own service. However,
this should be considered only in out-of-warranty situations.
When You
Need Help
Out of
Warranty