Product Overview

Installation guide
Pressure switch
KPU
060R9767 060R9767
© Danfoss | DCS (jmn) | 2016.11
DKRCC.PI.CD0.F4.22 | 520H11543 | 1
Application
KPU pressure switches are for use on commercial
refrigeration and air conditioning systems to give protection
against excessively low suction pressure or excessively
high discharge pressure.
They are also used for starting and stopping refrigeration
compressors and fans on air-cooled condensers.
KPU pressure switches are tted with the Single-Pole Single-
Throw (SPST) or Single-Pole Double-Throw (SPDT) switches,
suitable for direct as well as indirect (with a contactor) control.
KPU pressure switches are available in several pressure ranges
and are compatible with refrigerants listed below. KPU 6W and
KPU 6B are fail safe switches for high pressure refrigerants.
Standard enclosure is ~NEMA 1.
Product Specication
Application Type
Code number
Reset
Contact system
Regulating
range
[inHg] [psig]
Dierential
∆p
[psi]
Max.
working
pressure
[psig]
Max.
testing
pressure
[psig]
Ambient
temp.
[°F]
¼ in
male are
36 in. cap.
tube w. ¼
in are nut
Type
Switch
action
Low Pressure
Switch Cut Out
on pressure
fall
KPU 1 060-5231 060-5233 Auto. SPDT — 6 in. – 108 10 – 60 250 290
-40 – 122
(175 for
max.
2 hours)
KPU 1 060-5236 — Auto. SPST(NO) close High open Low 6 in. – 108 10 – 60 250 290
KPU 2 060-5237 060-5235 Auto. SPST(NO) close High open Low 6 in. – 73 6 – 30 250 290
KPU 2 060-5239 060-5240 Auto. SPDT — 6 in. – 73 6 – 30 250 290
KPU1B 060-5232 060-5234 Man (Min.) SPDT — 28 in. – 100 10 xed 250 290
Fan switch KPU 5 060-5241 060-5242 Auto. SPST(NO) close High open Low 100 – 465 25 – 85 510 530
High Pressure
Switch
Cut Out on
pressure rise
KPU 6W 060-5243 060-5245 Auto. SPDT — 100 – 600 58 – 145 675 / 610* 725
KPU
6B
060-5244 060-5246 Man. (Max.) SPDT — 100 – 600 60 xed 675 / 610* 725
* 610psig - MWP for products used according to 97/23/EG PED directive.
Refrigerants:
R22, R134a, R404A, R407A, R407C, R407F, R410A*), R422B,
R422D, R438A, R448A, R449A, R450A, R452A, R507A, R513A
For complete list of approved refrigerants, go to
http://products.danfoss.com/all-products/
*) R410A only for KPU 6W and KPU 6B
Installation
Select an accessible location, where the switch and pressure connection line will not be subject to damage.
IMPORTANT:
Mount the pressure switch in a position that
will allow drainage of liquids away from switch
bellows. Pressure connection of the switch
must always be located on the top side of the
refrigerant line.
This reduces the possibility of oil, liquids, or
sediment collecting in the bellows, which could
cause the switch malfunction.
IMPORTANT:
Ensure the ambient temperature for the pressure
switch is higher than the refrigeration line as that
will prevent liquid migration and accumulation in
the bellows.