Labconco VACUUBRAND Diaphragm Pump 7393000 User Manual
Page 13
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Do not permit any
uncontrolled pressurizing. Make
sure that the exhaust pipeline cannot become blocked.
If there is an exhaust isolation valve, make sure that you
cannot operate the equipment with the valve closed to
avoid a
risk of bursting!
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Always provide a free and pressureless exhaust outlet
to avoid damage to pump valves and risk of bursting of
condenser glassware.
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Check the overpressure safety relief device at the ex-
haust waste vapor condenser at appropriate intervals.
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Keep the electrical power cord away from heated sur-
faces.
• Provide a firm, level platform for the equipment. Check
that the system which you are going to evacuate is
mechanically stable. Check that all fittings are secure.
Ensure a stable position of the pump without any me-
chanical contact other than the pump feet.
• Comply with
maximum permissible pressures at in-
let and outlet and with
maximum permissible pres-
sure differences between inlet and outlet. See section
”Technical data”, pg. 24. Do not operate the pump
with overpressure at the inlet.
• Avoid overpressure of more than 17.5 psi absolute (1.2
bar absolute) in the event that gas or inert gas is connect-
ed 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.
• 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.
• On pumps with a dual-voltage motor, check that the
voltage selection switch is set correctly. Do not change
the setting of the voltage selection switch while the