vacuubrand MZ 1C, Instructions For Use Manual

Page: 14 / 92

page 14 of 92
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Pumps with 24 V DC motor: The pump has no on/off
switch. The user has to provide a suitable line discon-
nector.
The supply cable (pumps with AC motor) may be fitted
with a molded European IEC plug or a plug suitable for
your local electrical supply. The cable contains wires
color coded as follows: green or green and yellow:
ground; blue or white: neutral; brown or black: hot.
+
Due to the high compression ratio, the pump may gen-
erate overpressure at the outlet. Check pressure com-
patibility with system components (e.g., exhaust pipe-
line or exhaust valve) at the outlet.
+
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!
+
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. 25. 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.