Factory Settings Of The Fl Uid Level Contacts; Altering The Contacts At A Later Date - Hydac TankConditioner TC Mode D'emploi

4.2 Commissioning
Warning! Electrical connection must only be carried out by a qualifi ed
electrician!
The pin connections for your TankConditioner
and in Technical Specifi cations under Point 4.7.
The required connector(s) M12 x 1 are not supplied!
To fi nd out which type of TankConditioner
of the type code label on the fl uid level switch.
Example:
4.3 Factory settings of the fl uid level contacts
Factory setting of fl uid level monitoring
Type code
Sensor tube length L [mm]
L2 [mm] NC
L1 [mm] NO
L2 [mm] 20 mA
L1 [mm] 4 mA
L1 – L2 [mm] 16 mA
1)
Rising N/C,
e. g. advance warning
"Min. tank volume"
2)
Rising N/O,
e. g. cut-out
"Min. tank volume"
38
®
TC are given under Point 4.6,
® TC you have, please refer
Switch assignment
Type of
temperature gauge
1.x (brass / plastic) 2.x (stainless steel)
250 370 520 250 370
1)
150 270 420 150 270
2) 190 310 460 190 310
50
215 335 485 193 313
165 285 435 145 263
4.4 Altering the contacts at later date
4.4.1 Version /-S12
Important notice: When working with the circuit board (contact strip) a high
level of cleanliness must be maintained! Dirt or grease can cause contact
problems and malfunctions.
The switching contacts activated by the fl oat are mounted on a gold-plated
contact strip (in cm scale) using plastic screws. The contact housings are
made in different colours and must only be fi tted to the contact strip in a very
specifi c order (see following instruction). They are positioned at the factory
according to the order specifi cations and can be adjusted higher or lower
afterwards (taking into account minimum distances!).
Instruction for positioning the switch contacts
Flange cover and
fl ange gasket
520
420
Proceed as follows:
460
50
Switch off the voltage supply!
463
Unscrew the fi lter cap and remove the fi lter element.
413
Undo the 6 mounting screws and remove the fi lter holder and gasket.
Undo the 4 screws on the fl ange cover and take off the cover
and the cover gasket.
Carefully remove the adapter plug from the contact strip (Warning: On type
"D" (temperature display) some on the adaptor plug cables are permanently
soldered to the temperature module!).
Carefully remove the contact strip by pulling up.
Undo the plastic screws on the contacts and reposition the contacts using the
cm-scale as a guide (this is on the back of the contact strip). Adjustment is in
1 cm increments.
The fl uid level monitoring device is fi tted with two bi-stable switching contacts
which can be turned through 180° for either NO or NC function.
It is possible to change the contact function at a later date.
There are two arrows on the contact housing. The arrow which is pointing up
when installed indicates the contact function which is in use.
Fluid level Optional temperature contact (TK),
contacts Pt 100 or 4 - 20 mA output
Sensor tube
Plastic
screws Contact strip Flange Float
39