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6.2.9 Checking the drain valve
If you leave the drain valve semi-open for several months, it might get reshaped that you might
not be able to shut the pump all the way. When storing the pump, please make sure the valve
is completely shut. If you are using the plug instead of valve, the same situation will be
applied.
6.3 Checkup after storage for a long period
Long term storage of the Vacuum pump without operation might possibly cause trouble in
operation caused by rust
If you kept the Pump long time without operating it, ask a closest Service Center for the check.
6.4 Overhaul
If there found remarkable Pump contamination or performance deterioration due to the operation
condition, you are recommended to conduct regular overhaul regardless of the check items
described above.
Overhaul shall be required to keep the performance as well as the safety and further to continue
the production on forecast.
Please contact the Service Center close to you listed at the end of the document as for the
overhaul.
Do not remember to fill and submit the Contamination certificate enclosed in the end of the
document.
WARNING
We would be obliged to refrain from handling and/or executing
maintenance of the product if the detail of used hazardous
substance was not disclosed or the product has exhausted such
substance that the detoxification process is hardly conducted.
CAUTION
You are requested to conduct the overhaul once a year.
If there found remarkable Pump contamination or performance
deterioration due to the operation condition, you are recommended
to conduct the overhaul earlier than one year period.
You shall be in need of replacing such parts as listed on the “9. Main
spare parts” at minimum.
