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• Avoid overpressure of more than 17.5 psi absolute (1.2
bar absolute) in the event that inert gas is connected to
the pump, to the gas ballast or to a venting valve.
•
Note
: Flexible elements will shrink when evacuated.
• Connect hoses gas tight at inlet and outlet of the pump.
• Connect hoses gas tight at the pressure transducer.
• Ensure that no foreign objects can be drawn into the
pump.
• Check the power source and the pump’s rating plate
to be sure that the power source and the equipment
match in voltage, phase, and frequency.
Make sure ventilation is adequate to maintain recommend-
ed operating temperature. Keep a minimum distance of
2 in (5 cm) between the cooling fan and surrounding items
(e.g., housing, walls, etc.), or else install an external auto-
matic ventilation system. Check fan regularly for dust/dirt.
Clean fan guard grill if necessary to avoid a reduction of
ventilation.
The mains plug is a disconnecting device to separate the
pump from the supply voltage. Ensure that the mains plug
is easily accessible at all times to allow the separation of
the device from the power supply.
Position the pressure transducer and its vacuum line in
such a way that condensate cannot flow towards the pres
-
sure transducer.
Use only hoses at the inlet and outlet of the pump with
an inner diameter at least as large as the diameter of the
pump’s tubing (to avoid overpressure at the outlet, and
reduction of pumping speed at the inlet).
Allow the equipment to equilibrate to ambient temperature if
you bring it from cold environment into a room prior to opera-
tion. Notice if there is water condensation on cold surfaces.
