page 26 of 58
• Install a cold trap in front of the pump, if pumping ag
-
gressive or corrosive gases or vapors.
• A power failure may cause accidental ventilation of the
pump or the vacuum system, if the manual gas ballast
valve 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-
• The pump is supplied dry (i.e., without oil filling).
Before starting the pump for the first time
,
pour in
the oil
as described in the above section ”Initial opera-
tion / Pouring in the pump oil”, pg. 24.
• 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.
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. Use only hoses
at the inlet and outlet of the pump with an inner diameter
at least as large as the diameter of the pump’s connec-
tions.
Always install outlet tubing descending from the pump or
provide other measures to avoid backflow of condensate
towards the pump.
Use a suitable valve (see”Accessories”, pg. 39) to iso-
late 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.
NOTICE
