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.: 999084 / 05/10/2009
page 41 of 46
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
alternative:
O-ring
28 x 2,5 ...........................................................
638304
(FPM covered with FEP)
☞
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 pressure transducer
The controller itself is maintenance-free.
If the vacuum system is contaminated (oil, particles, etc.), contamination of the pressure transducer will
influence the accuracy of measurement.
Attention:
Never use hard objects to clean the pressure transducer!
➨
➨
➨
➨
➨
Fill the chamber of the pressure transducer 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 chamber of the pressure transducer 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.
➨
Tighten union nut first by hand and then tighten by one full
turn using open-ended wrench.
