7 Operation
7.1 Switching on and operating the pump
WARNING
Danger of poisoning due to emission of toxic process gases from the exhaust
During operation with no exhaust line, the vacuum pump allows exhaust gases and vapors to escape
freely into the air. In processes involving toxic media, there is a risk of injury and danger to life due to
poisoning.
► Observe the relevant regulations for handling toxic substances.
► Safely purge toxic process gases via an exhaust line.
► Use suitable filter equipment to separate toxic substances.
CAUTION
Risk of injury from bursting due to high pressure in the exhaust line
Faulty or insufficient exhaust lines cause hazardous situations, e.g. increase in exhaust pressure.
There is a risk of bursting. It is not possible to rule out the risk of injuries due to broken pieces flying
around, high escaping pressure and damage to the equipment.
► Lay the exhaust line without shut-off units.
► Observe the permissible pressures and pressure differentials of the product.
► Check the exhaust line regularly for correct function.
NOTICE
Damage caused by water hammer
The sudden ingress of condensate can cause water hammer, as the pump cannot pump the addition-
ally formed steam down quickly enough. Water hammer destroys the pump.
► Install a capacitor between the vacuum system and pump.
– This intercepts the fluid upstream of the pump.
NOTICE
Damage caused by fluids and dust
Fluids and dust damage diaphragms and valves.
► Prevent ingress of particles and dusts to the pump.
► Install a suitable filter upstream of the pump if necessary.
► Avoid condensation in the pump and water hammer.
► Observe the intended use.
NOTICE
Damage caused by silencer contamination
After a long period of operation at high intake pressures or with dust-laden gases, the silencer can
become congested. If the silencer becomes contaminated, an internal overpressure builds that dam-
ages bearings, diaphragms, and valves.
► Replace a contaminated silencer.
► Make sure that the exhaust line is unobstructed.
► Ideally, use a hose nozzle as an outlet.
Achieving throughput and ultimate pressure
The pump achieves the specified throughput and ultimate pressure values once the
operating temperature has been reached (after approx. 15 minutes).
Operation
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