Safety Information
13GA02411_002_C0 - 10/2016 - © Leybold
11 The pump’s motor is equipped with an overtemperature protection
(PTC). Processing the PTC signal is a safety measure which in the
case of inadequate cooling, a temporary mains power phase failure or
in the case of frequency variations offers effective protection preventing
costly damage to the motor coils.
12 The pump must only be operated with all covers in place so that ade-
quate cooling of the pump is ensured.
13 If corrosive or reactive gases at low concentrations are being pumped,
then operate the pump with purge gas. Consult us first as to which
pumps are required for specific processes and applications.
14 Before pumping condensable vapours the pump should be at ope-
rating temperature. If a gas ballast is present, then it should be
opened. The pump will attain its operating temperature approximately
30 minutes after having started the pump. During this warm-up phase,
the pump should be left separated from the process by a valve in the
intake line, for example.
15 With the pump warm from operation do not clean it from the outside
with water. There is the risk of a rotor crash due to shock cooling.
16 If condensable vapours have been pumped, the pump should before
switching off be purged with an inert gas or air (depending on the spe-
cific application) for approximately 15 minutes. This process should
also be run before cleaning the pump chamber.
17 For shutting down the pump purge the pump before switching off with
an inert gas or air (depending on the specific application) for approxi-
mately 15 minutes. Place desiccant onto the intake screen in the
intake flange and into the discharge flange and blank off the flanges
with a piece of foil. Disconnect the pump from the mains power. When
storing the pump for a longer period of time, drain out the oil first.
Package the pump airtight in polyethylene foil.
18 Improper maintenance or repair work can have an influence on the
service life and the performance of the pump and will void any warran-
ty claims.
19 For water cooled versions:
Failure to comply with the cooling water data may lead to internal cor-
rosion. This will result in damaging the pump.
20 If you transport/store or air-ship a water cooled pump and if there is at
the same time the risk of frost, the water may freeze and damage the
pump. For this reason before transporting the pump or storing it, drain
out the water. For this refer to Section 4.3 Shutting Down.
Pressures given in bar or mbar are absolute values. If exceptionally a gauge
pressure is meant, a “g” is added (bar(g) = bar (gauge) = bar overpressure)
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