VACUUBRAND MV 10 NT VARIO - Manual (Page 15)

page 15 of 126
+
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!
+
Maximum permissible pressure at the pressure trans-
ducer: 21.8 psi (1.5 bar) absolute.
+
Operation with silencer at the outlet:
Use the silencer only in case of low gas throughput.
Operating the pump at a high inlet pressure or pump-
ing dusty gases for a long time may cause clogging of
the silencer. Due to clogging of the silencer an internal
overpressure may build up, which may damage bear-
ings, diaphragms and valves.
Check the silencer regularly for permeability and re-
place if necessary, or install a hose nozzle instead (see
“Accessories / Spare parts”, pg. 84). Preferably use
the hose nozzle as outlet and make sure that the ex-
haust pipeline cannot become blocked.
+
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. 26. Do not operate the pump
with overpressure at the inlet.