VACUUBRAND MZ 2C NT VARIO without controller (o.C.) - Manual (Page 37)

page 37 of 76
• 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.
Use connecting hoses with large diameter and keep them
as short as possible to avoid flow losses. Locate the pump
as closely as possible to the application.
Always install outlet tubing descending from the pump or
provide other measures to avoid backflow of condensate
towards the pump.
Use a suitable valve to isolate the pump from the vacuum
application. This is to allow the pump to warm up before
pumping condensable vapors and to clean the pump after
use before it is switched off.
When assembling, ensure vacuum-tightness. After as-
sembly, check the whole system for leaks.
Secure hose connections at the pump appropriately, e.g.,
with hose clamps, to protect against accidental detach-
ment.
To reduce pump noise emanating from the pump exhaust
port, connect an exhaust hose or use a silencer (see “Ac-
cessories”, pg. 46).
Pumping units with separator (at inlet) and exhaust
waste vapor condenser (at outlet)
Catchpots:
The catchpot at the inlet protects against droplets and par-
ticles from entering the pump.
+
Enhances lifetimes of diaphragms and valves.
NOTICE