Product Overview

MK
1
MK
1
1
30
25
MK.F
W
13
6 mm
18
15
2
Data sheet | Pressure switch, KP
DKRCC.PD.CD0.1A.02 | 520H11562 | 7
KP 7BS
Design
(continued)
Types KP1, KP1A, KP2, KP6, KP6A, KP7 and KP17
units with designation W, B or S have been tested
and approved by TÜV, Rheinland in accordance
with EN 12263.
Types KP6, KP6A, KP7 and KP17 have a double
bellows: an outer bellows and a regulating
bellows. When system pressure exceeds the set
value, the KP will automatically stop the plant.
The double bellows system prevents loss of
charge in the event of bellows rupture.
A rupture in the inner bellows will cause the
control cut-out pressure to fall about 3 times less
the set value, thus the refrigeration plant
compressor will stop.
A rupture in the outer bellows will cause the
control cut-out pressure to fall to about 3 bar
under the set value, thus providing a fail-safe
function.
1. Pressure setting spindle
2. Dierential setting spindle
3. Main arm
15. Cable entry
18. Locking plate
25. Int. reset arm
30. Ext. reset button
KP 7W, are KP 7W, solder
Versions with designation W or AW cut in again
automatically when the pressure has fallen to the
set value minus the dierential.
Versions with designation B or AB can be cut in
manually with the external reset button when
the pressure in KP1 has increased 0.7 bar above
set value and in KP6 and KP7 has fallen 4 bar
under the set value.
Versions with designation S or AS can be cut in
manually with the internal reset arm when the
pressure has fallen 4 bar under the set value.
All KP pressure switches, including those which
are PED-approved, operate independently of
changes in the ambient temperature around the
control housing. Therefore the set cut-out
pressure and dierential are held constant
provided the permissible ambient temperatures
are not exceeded.
© Danfoss | DCS (rm) | 2019.03