Media (cleaning / rinsing solutions)
66
BA_Elmasolvex_VA_EN_Vers.05.2018
© Elma Schmidbauer GmbH
8.1
Recommended media
Elma provides suitable solvent-based cleaning ("elma wf pro"),
rinsing ("elma suprol pro") and relubrication media ("elma
unimix") from its own development and manufacture. Ask your
dealer about these.
The cleaning machine is always suitable for cleaning and
rinsing media which are based on
1. aliphatic C8-C11 hydrocarbons
(Exceptions: Aromatic hydrocarbons such as toluene
(methylbenzene), xylene (o-, m-, or p-dimethylbenzene) and
mesitylene (1,3,5-trimethylbenzene)
and hydrocarbon
mixtures with more than 25% content of aromatic
hydrocarbons)
2. C3 or higher alkyl compounds
(Exceptions: Of the alkoxy compounds, as well as acetone
(flashpoint lower than -20 °C!) and ethyl acetate (flashpoint
lower than -4 °C!), the following solvents and solvent
mixtures with more than 25% content of these solvents are
no longer suitable:
Ethers, particularly mono, di and
tripropylene glycol methyl ether (PM, DPM and TPM)
3. and meet the flashpoint limitation FP >=12 °C.
The upper limit of the boiling range of rinsing media should not
exceed 170 °C for successful drying (only use volatile rinsing
media).
Instructions for the above-mentioned recommended media:
(1) The upper limit of the boiling range of rinsing media should
not exceed 170 °C at normal pressure for successful drying
(use sufficient volatile rinsing media at least in the last rinsing
step).
(2) If the boiling range of any cleaning or rinsing medium
undercuts the lower limit of 100 °C at normal pressure, the
heating of the medium combined with long-lasting (> 3 minutes)
ultrasound impact at full power can result in coming close to the
(lower under vacuum) boiling point of such a medium.
The "Warning 211, Evacuation gradient too small" would be
displayed in such a case as the required vacuum in the working
chamber in the spatial area above the medium filling level
would heat to > 30 °C at which the vacuum for already almost
boiling media will no longer be reached quickly enough. A
cooling down pause interrupting the operation of the cleaning
machine or a change to medium cooled down to T < 30 °C in
the storage tank will then be required.
For example, this concerns operation of the cleaning machine
with isopropyl alcohol (isopropanol, 2-propanol, IPA).
Media whose boiling range at the lower limit even undercuts
80 °C at normal pressure require media temperatures < 25 °C
in the storage tank for fault-free cleaning machine operation.
ATTENTION