Heidolph ROTAVAC vario control - Manual (Page 6)

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 6 of 34
• Comply with maximum permissible pressures at inlet and outlet and pressure
differences between inlet and outlet, see section ”Technical data”. Do not operate
the pump with overpressure at the inlet.
• Check that mains voltage and current conform with the equipment (see rating
plate).
• Avoid overpressure of more than 0.2 bar in case inert gas is connected to the
pump, the gas ballast or to a venting valve.
• Connect pipes gas tight at inlet and outlet of the pump.
• Attention: Flexible elements tend to shrink when evacuated.
• Adopt suitable measures to avoid the flowing of liquids on or into the pump motor
when assembling or disassembling vacuum connections at the pump. Risk of
corrosion and/or short circuit!
• Check glass parts for damage and bracing.
Provide a firm level platform for the equipment and check that the system to be
evacuated is mechanically stable and that all fittings are secure. Ensure a stable po-
sition of the pump without any mechanical contact except of the pump feet. Comply
with all applicable safety regulations.
Keep a distance of minimum 20 cm between fan and ambient parts (e.g. housing,
walls, ...). Check fan regularly for dust/dirt, clean if necessary to avoid a cutback of
ventilation.
If the equipment is brought from cold environment into a room for operation, allow
the equipment to warm up (pay attention to water condensation on cold surfaces).
The diameter of the inlet and outlet pipeline should be at least as large as the diame-
ter of the pump connection pipelines.
Comply with all applicable and relevant safety requirements (regulations and
guidelines), implement the required actions and adopt suitable safety meas-
ures.
1.4 Ambient conditions
To the best of our knowledge the equipment is in compliance with the requirements
of the applicable EC-directives and harmonized standards (see ”Declaration of con-
formity”) with regard to design, type and model. Directive IEC 1010 gives in detail
conditions under which the equipment can be operated safely (see also IP degree
of protection).
Adopt suitable measures in case of differences, e. g. using the equipment outdoors,
installation in altitudes of more than 1000 m above mean sea level, conductive pol-
lution or bedewing.
Pay attention to the permissible maximum ambient and gas inlet temperatures
(see ”Technical data”).
NOTICE
NOTICE
☞ Ensure that the coolant outlet pipeline of the condenser (accessory) is always
free and that it cannot get blocked. Install an optional coolant valve always in the
supply line of the exhaust waste vapor condenser only.
☞ Secure coolant hoses at the hose nozzles (e.g. with hose clip) to prevent their
accidental slipping.
☞ Check the overpressure safety relief device at the exhaust waste vapor conden-
ser in appropriate intervals.