page 22 of 80
➨
Note
: The pump may be contaminated with process
chemicals, which have been pumped during operation.
Ensure that the pump is completely decontaminated
before maintenance commences.
+
Take adequate precautions to protect people from the
effects of dangerous substances if contamination has
occurred. Use appropriate protective clothing, safety
goggles and protective gloves.
+
Wear parts have to be replaced regularly.
+
Never operate a defective or damaged pump.
+
Check every motor capacitor regularly by measuring
its capacity and estimating its time in operation. Re-
place old capacitors early enough to prevent a failure
in operation. If an old motor capacitor fails, the capaci-
tor may get hot. It may even melt or emit a flame, which
could be
dangerous for persons and equipment in
the vicinity
. The capacitors have to be replaced by an
electrician.
+
Vent the pump before starting maintenance. Isolate
the pump and other components from the vacuum sys-
tem. Allow sufficient cooling of the pump. Separate the
pump from the coolant circuit and drain condensate, if
applicable.
Clean polluted surface with a clean, slightly moistened
cloth. To moisten the cloth we recommend water or mild
soap.
Interventions on the device
+
Work on the equipment may be performed only by a
qualified person.
+
Work on electrical equipment in particular may be per-
formed only by qualified electricians.
+
Ensure that maintenance is done only by suitably
trained and supervised technicians or at least by an
instructed person.
NOTICE
