Notice – VACUUBRAND RZ 9 User Manual
Page 27
• A power failure may cause accidental ventilation of the
pump or the vacuum system, especially if the manual
gas ballast valve (RE 2.5 / RZ 2.5 / RE 6 / RZ 6 / RE 9
/ RZ 9) is open. If this constitutes a potential source of
danger, take appropriate safety measures, e.g., install
a solenoid operated gas ballast valve (see “Accesso-
• 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.
•
Pump with dual-voltage motor: Check that the volt-
age selection switch at the terminal box is positioned
correctly. Check every time before starting the pump.
Note: If the pump is switched on with wrong voltage
selection, the motor may be damaged!
Change the selection at the voltage selection
switch only, if the pump is unplugged from the
power source.
Keep a minimum distance of 2 in (5 cm) between the cool-
ing fan and surrounding items (e.g., housing, walls, etc.),
or else install an external automatic 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 (e.g., install an oil mist separator
at the outlet) 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.,
NOTICE