SIKA VK Serie Notice D'utilisation page 27

VH... / VK...
6 Adjusting the switching unit
Important notices!
Adjustment of the switching unit is not required if a desired ex works switching point set-
ting has been agreed with the customer.
If there are no arrows on the switching unit, the Adjustment of the type of contact and the
switching point is not permitted.
6.1 Type of contact
The switching unit of the control switch enables two types of contact:
1. Normally open contact:
2. Normally closed contact:
The following table explains the two types of contact:
Type of contact
Normally open
Normally closed
Unless otherwise requested by the customer, the switching is factory set as a normally open
contact.
6.2 Level switch version VH...X
WARNING! LOSS OF EXPLOSION PROTECTION!
No explosion protection when adjusting the type of contact or the switching point.
For use in explosion-risk area, the type of contact or the switching point is fixed by facto-
ry. Adjustment of the type of contact and the switching point is not permitted.
6.3 Level switch versions VHS0... , VKS0... and VK60...
 To adjust the reed switching unit, open the junction box of the switch head ( Fig. 14)
(does not apply for VK60...)
to open here
Fig.14
Technical changes reserved
"RED" arrow on the switching unit
"WHITE" or "BLUE" arrow on the switching unit
Setting
RED arrow
WHITE or
BLUE arrow
Adjusting the switching unit
Filling level
rising
falling
rising
falling
to open here
Electrical contact
closing
opening
opening
closing
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