GA 02.200/8.02 - 10/02
Operation
12
2.6 Shutdown and Storage
• When the pump has been switched off
while warm, it may not be switched on
immediately again.
• If the pump has been pumping hazardous
substances you must make sure that all
relevant safety regulations are observed
before opening the intake or exhaust flan-
ges.
This applies equally to opening of the oil fill
and oil drain plugs.
If required wear suitable protective clothing.
To shut down the pump, disconnect it from the vacuum
system using a valve. If vapours or aggressive/corrosive
media are pumped, let the pump run for at least another
30 min. with the gas ballast valve open. Then shut it
down. The pump is automatically vented within 2 to 5
min.
When using the pump in processes with aggressive or
corrosive media, it is advisable to let the pump continue
to operate even during long non-working intervals (e. g.
overnight) with the intake line closed and the gas ballast
valve open. This avoids corrosion when the pump is not
running.
If the pump is to be shut down for a prolonged period
after having been used to pump aggressive or corrosive
media, or if it is to be stored, proceed as follows:
If hazardous substances were pumped,
take suitable precautions.
Drain the oil (see Section 3.3).
Fill the pump with fresh oil (see Section 3.3) and let it run
for a while.
Drain the oil again and fill the pump with fresh oil once
more (see Section 3.3).
Seal the connecting ports. Special preservation or slus-
hing oils need not be used.
2.7 Switching off through
Monitoring Facilities
When the pump has been switched off
while warm by a motor protection switch, for
example, you may only switch the pump on
again manually after it has cooled down and
after having removed the cause for the
shut-down.
• When the pump has been switched off
while warm, it may not be switched on
immediately again.
• If the pump has been pumping hazardous
substances you must make sure that all
relevant safety regulations are observed
before opening the intake or exhaust flan-
ges.
This applies equally to opening of the oil fill
and oil drain plugs.
If required wear suitable protective clothing.
Warning
Warning
Warning
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