HYDAC ELECTRONIC HFS 2500, Руководство по эксплуатации, Страница: 29 / 40

Flow switch HFS 2500 with ATEX approval Page 9
Status 2020/05/19 HYDAC ELECTRONIC GMBH Mat. No.: 669884
5 Switch point adjustment
-
Loosen the lock screw of the switch contact
-
Shift the switch contact until the arrow on the switch contact is in coincidence with the desired
switch point
-
Tighten the look screw of the switch contact.
Hints:
-
The adjusted switch-point corresponds to the switch-off-point of the switching contact with
decreasing flow
-
The actual switch position can be checked by means of an universal tester
(see chapter 4.4.4)
-
Except for the switch point, no other adjustments have to be made.
6 Maintenance
There is no maintenance required. Repairs are not permitted!
Hints:
-
The free movement of the float and the operation of the switch contact can be checked by
varying the flow and observing the switch contact status.
(observe explosion-proof, see chapter 4.4.4)
-
In most cases a purification can be achieved by flushing the instrument with clean media. In
obstinate cases (e.g. calcareous deposits) cleaning can be done with commercial purifier, as
long as the purifier is not aggressive against the material of the instrument.