Hawker P7/I.S., Инструкции по эксплуатации и монтажу, Страница: 8 / 23

Page 8 of 22
Certified drawing 2920 included in this manual gives specific information for installation
and additional requirements for multiple system configurations, which should be strictly
adhered to.
The housing can be mounted either by means of screws passed through two holes to DIN
46 121 and DIN 43 660 or by a snap fastener for fitting to DIN 46 277 and DIN EN50 022
assembly rails.
4.2
Setting up the P7/I.S controller
Different versions of the controller are available; see the P7/IS technical specifications for
ordering information. Always check to ensure the controller specifications are suited to the
supply and its application before installing.
The input supply, fail-safe setting and sensitivity are fixed at the factory; the controller’s
label will indicate its fail-safe as either FSH (H) or FSL (L) and its supply voltage.
Removing the front snap on trim will reveal the sensitivity control and a red Led. The relay
is energised when the Led is ‘ON’.
In general increasing the sensitivity control increases the sensitivity of the unit, i.e.
increasing it will make the unit switch with cleaner liquids (less conductive), this is where
we are not concerned with ‘ragging’ etc.
mm