Maintenance
26
BA/ Transsonic TI-H_GB_0306
© Elma GmbH & Co KG
9.2
Check the safety switch-off (on TI-H 25 and bigger)
Check the functioning of the safety switch-off of heating and
ultrasound by the level switch monthly.
To carry out this check the filling level must be reduced below
the position of the level switch. It is recommended to check the
unit when it is filled, ready for operation and heating up.
How to proceed:
Level monitoring
1. Switch on ultrasound and heating.
2. Reduce the filling level by draining some of the liquid.
3. When the position of the level switch is approx. 1 -2 cm
above the liquid level, switch off ultrasound and heating
after approx. 10 seconds.
In order to avoid repeated switching on and off of ultrasound
and heating in the limit range of the level switch, the level
switch is fitted with a switch hysteresis of approx. 10 seconds.
In case of a malfunction please contact your supplier or the
manufacturer. If the unit is kept on operating in case of a
malfunction it must be under permanent observation.
9.3
Service life of the transducer tank
The transducer tank and particularly the sound-giving surfaces
are wear parts. The changes on the surfaces that occur after a
certain operating period are visible first as gray areas and later
on as material abrasions, the so-called cavitation erosion. The
Elma units are made of special highly cavitation-proof stainless
steel. In order to prolong the service life of the transducer tank
of your unit we recommend to observe the following
instructions:
•
Regularly remove any cleaning residues, in particular metal
particles and rust films (gently wipe, rinse, etc.).
•
Use suitable cleaning chemicals, with particular caution
concerning the kind of removed contamination (see
section
8, Cleaning media
, 2. Note on
Risk of damages on the
transducer tank!
and information thereon).
•
Exchange the cleaning medium before it is too heavily
contaminated.
Do not operate the ultrasound unnecessarily; switch off after the
cleaning process.
