VACUUBRAND MZ 2C EX +IK+EK - Manual (Page 13)

page 13 of 75
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.: 999128 / 29/04/2014
Maintenance and repair
Wear parts have to be replaced regularly. In normal use, the lifetime of the dia-
phragms and valves is typically 15,000 operating hours. Bearings have a typical du-
rability of 40000 h.
• The motor capacitors have to be replaced after 200000 start/stop cycles at the
latest. If an overaged motor capacitor fails it might get hot and even melt and may
cause a flame to form which could be dangerous for persons and equipment
in the vicinity. The capacitors have to be replaced only at the factory.
Use only genuine spare parts and accessories.
☞
Otherwise safety and performance of the equipment as well as the electromag-
netic compatibility of the equipment might be reduced.
☞ If not using genuine spare parts the ATEX conformity becomes invalid.
Ensure that maintenance is done only by suitable trained and supervised techni-
cians.
➨
Isolate equipment from mains and wait two minutes before starting mainte-
nance to allow the capacitors to discharge.
• Before starting maintenance vent the pump, isolate the pump and other compo-
nents from the vacuum system. Allow sufficient cooling of the pump. Drain con-
densate, if applicable.
☞ 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.
☞ Attention: The pump might be contaminated with process chemicals which 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.
☞ Take adequate precautions to protect people from the effects of dangerous sub-
stances (chemicals, thermal decomposition products of fluoroelastomers), wear
appropriate safety-clothing and safety glasses.
☞ To avoid danger due to electrostatic ignition wipe the device or parts of the de-
vice only with a humid cloth.
In order to comply with law (occupational, health and safety regulations, safety at
work law and regulations for environmental protection) vacuum pumps, components
and measuring instruments returned to the manufacturer can be repaired only when
certain procedures (see section ”Notes on return to the factory”) are followed.