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GA01423_002_A2 - 10/2008 - © Oerlikon Leybold Vacuum
Maintenance
5
Maintenance
Neglecting maintenance and inspection can cause poor performance and
pump failure.
To remove debris accumulated in the vacuum pump, operate the pump
several times for 3-5 seconds (once a day) with its inlet open to atmos-
pheric air (or open the purge gas valve if one is installed).
Allow the pump to cool down before doing maintenance. Performing
maintenance immediately after shutdown can cause bodily injury such as
burns.
Be careful of automatic restart
The thermal protection on the single-phase motor automatically resets.
This motor restarts without warning after the protector trips back. Be sure
to switch off the electric power before maintenance or inspection.
Switch off electric source
Be sure to switch off the electrical power before maintenance or inspec-
tion. Failure to do so can cause bodily injury from electric shock or rota-
ting objects.
More frequent maintenance is required if the ambient temperature is too
high. The maintenance interval is based on 5 - 40 °C ambient temperatu-
re and 25 °C average yearly temperature.
Shorten the maintenance interval if the ambient temperature is higher.
Otherwise, the pump may fail prematurely.
The maintenance schedule assumes that the pump is exposed to clean
gas only.
You must shorten the maintenance interval when pumping vapour since
vapour temperature, disposal volume, disposal frequency and substances
in the vapour influence the pump's operation.
Caution
Warning
Warning
Warning
Caution
Hot
Hot
SC 5 D / SC 15 D
SC 30 D / SC 60 D
Fig. 5.1
