VACUUBRAND MV 2 VARIO - Manual (Page 32)

page 32 of 41
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.: 999035 / 15/12/2009
Replacing diaphragms and valves
All bearings are encapsulated and are filled with long-life lubricant. Under normal oper-
ating conditions they are 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 dia-
phragms 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. Before start-
ing 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 damaged pump. Ensure that maintenance is done
only by suitably trained and supervised 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 com-
ponents.
Set of seals (diaphragms, valves and seals) for MD 4 / MV 2 VARIO ...................................... 69 68 34
Set of seals (diaphragms, valves and seals) for MV 10 VARIO ............................................... 69 68 27
Face wrench with torque indicator ............................................................................................. 63 75 80
☞ ☞ ☞ ☞ ☞ 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