Heidolph ROTAVAC vario control - Manual (Page 15)

Documents are only to be used and distributed completely and unchanged. It is strictly the users´ responsibility to check carefully
the validity of this document with respect to his product. Manual-no.: 999223 / 08/07/2009
page 15 of 34
4.1 Connection of the control cable
Factory-set, the pump is designed for operation with a control signal; i.e. without a
control signal, the pump does not start!
Connect the control cable of the pump to the vacuum box (see instruction manual
Hei-VAP Precision).
4.2 Using a ROTACOOL reflux cooler
4 Use and operation
4.3 Installing in a vacuum system
• Connection lines at the pump inlet have to be gas tight. Particles and dust must
not be aspirated, the user has to provide appropriate filters if necessary. The user
must ensure their suitability concerning gas flow, chemical resistance and safe-
ness against clogging prior to use.
• Connect an exhaust line gas tight at the pump outlet if necessary. Always dispose
of exhaust gases appropriately (e.g. into a fume hood). If there is risk of release of
dangerous or polluting fluids, install an appropriate system to catch and dispose
of those fluids.
• Reduce the transmission of vibration and prevent loading due to rigid pipelines.
Insert elastic hoses or flexible elements as couplings between the pump and rigid
pipes. Attention: Flexible elements tend to shrink when evacuated.
• Assemble the glass set stress-free.
• The exhaust line has always to be free (pressureless) to ensure an unimpeded
discharge of gas.
• Especially if the gas ballast valve is open, a power failure may cause uninten-
tional ventilation of the pump and the vacuum system. In case this constitutes a
potential source of danger, take appropriate safety measures.
• Make sure ventilation is adequate if the pumping unit is installed in a housing or
if ambient temperature is elevated. Provide external venting if necessary. Keep a
distance of minimum 20cm between fan and ambient parts.
• Before switching on check that mains voltage and current conform with the equip-
ment (see rating plate).
If using the ROTAVAC vario control or Rotavac vario
tec together with the ROTACOOL reflux cooler, place
the ROTAVAC vario control or ROTAVAC vario tec di-
rectly on top of the ROTACOOL.
If using the ROTAVAC vario control or ROTAVAC vario
tec without the ROTACOOL reflux cooler, an extra foot
has to be installed for operation with the condensate
cooler (13; included in the scope of delivery of the con-
densate cooler). Position the ROTAVAC vario control
or the ROTAVAC vario tec simply on the extra foot,
thereby placing the pump’s feet in the four hollows of
the extra foot.
Install the coolant hoses in such a way that the stability
of the pump is assured even with a full catchpot