VACUUBRAND MZ 2C VARIO - Manual (Page 47)

page 47 of 51
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.: 999034 / 22/04/2008
Round bottom flask 500 ml, coated .......................... 638497
O-ring 28 x 2,5 ......................................................... 3120553
(FPM) at the spherical ground joint of the round bottom flask at
the inlet
☞ Remove union nut at the condenser and remove hose from
the inlet of the condenser.
☞ Pull off old overpressure safety relief device and install new
one.
☞ Connect hose to the inlet of the exhaust waste vapour con-
denser and tighten union nut.
Overpressure safety relief device ............................. 638821
(at the exhaust waste vapour condenser)
Cleaning and assembling components
Cleaning the gauge head VSK 5
The gauge itself is maintenance-free.
If the vacuum system is contaminated (oil, particles, etc.), contamination of the pressure transducer will
influence the accuracy of measurement.
➨ ➨ ➨ ➨ ➨ Fill the gauge head chamber with a solvent (e. g. benzene) and allow sufficient cleaning time. Observe
all regulations concerning usage and disposal of solvents!
➨ ➨ ➨ ➨ ➨ Drain the solvent and dispose of in accordance with regulations, repeat cleaning if necessary.
➨ ➨ ➨ ➨ ➨ Rinse the gauge head chamber several times with alcohol in order to remove all solvent residues.
☞ Never use a spiky or sharp-edged tool to clean the pressure transducer.
➨ ➨ ➨ ➨ ➨ Allow the pressure transducer to dry.
➨ ➨ ➨ ➨ ➨ Readjust the pressure transducer if necessary.
Calibration in the factory
Control of measuring equipment
The VACUUBRAND DKD calibration laboratory is accredited by the Physikalisch-Technische Bundesanstalt
(PTB; German national institute for science and technology and the highest technical authority of the
Federal Republic of Germany for the field of meteorology and certain sectors of safety engineering) for the
measurable variable pressure in the pressure range from 10
-3 mbar to 1000 mbar in accordance with
the general criteria for the operation of testing laboratories defined in the DIN EN ISO/IEC 17025:2000
series of standards.
Calibration in the VACUUBRAND calibration laboratory:
-
To meet the requirements of the DIN ISO 9000ff and 10012 series of standards regarding the calibration
of inspection, measuring and test equipment at specified intervals.
- To document that the vacuum gauges calibrated are traceable to national standards of the PTB.