VACUUBRAND MZ 1C - Manual (Page 14)

page 14 of 102
patibility with system components (e.g., exhaust tub-
ing or exhaust valve) at the outlet.
+
Do not permit any uncontrolled pressurizing. Make
sure that the exhaust tubing cannot become blocked
to avoid a risk of bursting!
+
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 con-
nected to the pump, to the gas ballast, or to a venting
valve.
• Note: Flexible elements will shrink when evacuated.
• Ensure that no liquids can flow on or into the pump mo-
tor when assembling or disassembling vacuum lines at
the pump. Risk of corrosion and/or short circuit!
• 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
pump is connected to AC power. Unplug the pump be-