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Documents are only to be used and distributed completely and unchanged. It is strictly the users´ responsibility to check carefully
the validity of this document with respect to his product. manual-no.: 999073 / 15/12/2009
Set of seals (diaphragms, valves, O-rings)
............................................................................
69 68 21
Face wrench
with torque indicator ............................................................................................
63 75 80
Replacing diaphragms and valves
All bearings are encapsulated and are filled with long-life lubricant. Under normal op-
erating conditions, the pump is maintenance free. The valves and the diaphragms are
wear parts. If the rated ultimate vacuum is no longer achieved or in case of increased
noise level, the pump interior, the diaphragms and the valves must be cleaned and the
diaphragms and valves must be checked for cracks or other damage.
Depending on individual cases it may be efficient to check and clean the pump heads
on a regular basis. In case of normal wear the lifetime of the diaphragms and valves is
> 10000 operating hours.
☞
Prevent internal condensation, transfer of liquids or dust. The diaphragm and valves
will be damaged, if liquids or dust are pumped in significant amount.
If the pump is exposed to corrosive gases or vapours or in case of deposits, mainte-
nance should be carried out more frequently.
☞
Regular maintenance will improve the lifetime of the pump and also protect both
man and environment.
Before starting maintenance
vent the system, isolate the pump and other compo-
nents from the vacuum system and the electrical supply. Drain condensate if applica-
ble, avoid the release of pollutants. Allow sufficient cooling of the pump. Separate
pump from cooling water circuit. Before starting maintenance, wait
two minutes
after
isolating the equipment from mains to allow the capacitors to discharge.
Ensure that
the pump cannot be operated accidentally. Never operate the pump if covers or
other parts of the pump are disassembled. Never operate a defective or dam-
aged pump.
Ensure that maintenance is done only by
suitably trained and su-
pervised technicians
.
Ensure that the maintenance technician is familiar with the safety procedures which
relate to the products processed by the pumping system.
The pump might be contaminated with the process chemicals that have been pumped
during operation. Ensure that the pump is decontaminated before maintenance and
take adequate precautions to protect people from the effects of dangerous substances
if contamination has occurred.
☞
Wear appropriate safety-clothing when you come in contact with contaminated
components.
☞
☞
☞
☞
☞
Please read section ”Replacing diaphragms and valves” completely before start-
ing maintenance.
Partially the pictures show pumps in other versions. This doesn´t influence replacing diaphragms and
valves of the pump.
Tools:
-
Phillips screw driver size 2
-
Open-ended wrench w/f 17
-
Hex key size 5
-
Face wrench with torque indicator
