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Installation guide
Pressure switch
Type KP 21
Ambient temperatures
Caution: Do not mount a switch in a position where
dirt, sediment or oil will affect the operation of the switch.
Enclosure
CAUTION: The mounting panel must be plane to avoid damage of switch.
Low pressure (LP) side setting
1. Adjust range spindle to
desired CUT-IN value
2. Adjust differential
spindle to desired
DIFFERENTIAL
(DIFF.) value
CUT-IN minus DIFFERENTIAL equals CUT-OUT
© Danfoss A/S (AC-MCI / jmn), 2013-11
t
min.
−40°C (−40°F)
l
−25ºC (−13ºF)
t
max
65ºC (150ºF)
l
LP
scale
IC.PI.P10.G3.02 / 520B5881
Test pressure (p
)
test
LP
HP
High pressure (HP) side setting
1. Adjust range spindle to
desired CUT-OUT value.
2. DIFFERENTIAL (DIFF.)
is fixed.
Value printed on scale plate.
CUT-OUT minus DIFFERENTIAL equals CUT-IN
P
max.
test
20 bar P
e
P
max.
test
20 bar P
e
HP
scale
1
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Summary of Contents for Danfoss KP 21
-
Page 1: Installation Guide
CUT-IN value 2. DIFFERENTIAL (DIFF.) is fixed. 2. Adjust differential Value printed on scale plate. spindle to desired DIFFERENTIAL (DIFF.) value CUT-OUT minus DIFFERENTIAL equals CUT-IN CUT-IN minus DIFFERENTIAL equals CUT-OUT © Danfoss A/S (AC-MCI / jmn), 2013-11 IC.PI.P10.G3.02 / 520B5881... - Page 2 = Signal option LP signal option: = Bellows movement on pressure rise A-B close on LP drop = Bellows movement on pressure drop HP signal option A-D close on HP rise IC.PI.P10.G3.02 / 520B5881 © Danfoss A/S (AC-MCI / jmn), 2013-11...
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