9 Maintenance
9.1 Maintenance safety instructions
DANGER
Risk to health posed by residual traces of process gases inside the pump
Process gases are toxic and hazardous to health. They can cause poisoning and be fatal. Before dis-
connecting the pump, any remaining traces of process gases must be eliminated.
►
The equipment (pumping installation) must be purged with a stream of nitrogen for 30 mi-
nutes
at the same pressure and flow as that used for the process itself.
DANGER
Risk of poisoning in case of contact with toxic substances and by-products generated by the
process
The vacuum pump, pumping line components and operating fluids
will potentially be contaminated
with toxic, corrosive, reactive and/or radioactive materials related to the process. Any contact with the
contaminated parts or by-products generated by the process may be injurious to health and could
cause poisoning.
► Appropriate protective equipment must be worn when disconnecting the pump for maintenance,
filling it with operating fluid, or draining it.
► Ventilate the area thoroughly or carry out the maintenance under an extraction hood.
► Do not eliminate the by-products/residue via as common waste; have them destroyed by a quali-
fied company where necessary.
►
Close off all the ports with airtight blanking plates
(the product comes with blanking plates
that are also available for sale as accessories).
WARNING
Risk of cutting injuries due to contact with sharp edges via the high vacuum flange
Sharp components can be accessed via the inlet flange. Rotor and stator blades on turbomolecular
pumps have very sharp edges.
► Before starting any work on the product, wait for the pump to come to a complete standstill.
► Always keep the splinter shield in the inlet housing, as it limits the risk of injury.
► Always wear protective gloves in accordance with standard EN 420.
►
Never disconnect the high vacuum flange before the rotor is completely immobilized
.
WARNING
Danger of electrocution by contact during maintenance or overhaul
There is an electric shock hazard in case of contact with a product powered on and not electrically
isolated.
► Before carrying out any work, set the main switch to
O
.
► Disconnect the power cable from the mains.
► Secure the installation correctly by tagging and locking (LO/TO) the system to prevent uninten-
tional re-engagement.
WARNING
Risk of burns in case of contact with hot surfaces
Component temperature remains high, even after the pump has stopped. There is a risk of burns
through contact with hot surfaces, especially at the pump exhaust.
► Wait for the product to fully cool down before working on it.
► Protective gloves must be worn in accordance with standard EN420.
Maintenance
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