Installation guide
max. 3mm
(
in)
Pressure switch
KP 7W
Refrigerants: R1234yf, R455A, R454C
060R9802
t min: -25 oC
t max: 65 oC
PS/MWP
Typ e Regulation range PS/MWP
KP 7W 8 – 32 bar 510 psig / 35 bar
Max. 100 ºC
(212 ºF)
060R9802
max. 3 mm (1/8 in.)
A: 8 – 32 UNC (M4)
© Danfoss | DCS (rm) | 2021.05 AN377474140179en-000101 |
B: Enclosure IP30
(EN 60529)
C: Enclosure IP44
(EN 60529)
1
CAUTION:
Disconnect power supply before wiring connections are made or service to avoid
possible electrical shock or damage to equipment.
Do never touch live parts with your fingers or with any tool.
Contact rating (max.)
AC-15: 0.5A, 280 V
Use copper wire only
Tightening torque 20 lb. in. (2.3 Nm)
Contact 1-2 opens on pressure rise KP 7W
Range
Do never exceed the specified 0.5 A contact load.
Cut Out
Differential
Cut In
Differential
6 mm
(15/64 in.)
AN377474140179en-000101 | © Danfoss | DCS (rm) | 2021.05
2
Safety requirements
1. KP pressure switches shall only be employed in the units/systems which comply with the
requirements for charge limits and requirements for avoiding ignition sources of IEC 60335-2-
24, IEC 60335-2-40, IEC 60335-2-89, ISO 5149, EN378-1 or equivalent.
2. Applying the overload on the KPs must be prevented. If by any chance it was damaged, the
system / unit shall be stopped and KP shall be replaced as necessary.
3. KP switch must located in a place where refrigerant cannot stagnate in the case of leakage.
4. Electrostatic discharge protection and Electrical leakage protection shall be surely
implemented by grounding or other measures.
5. Only trained personnel are authorized to handle flammable refrigerants systems and may do
the installations, maintenance and exchange of the switch by using appropriate tools.
6. It is recommended to regularly check the function of KP switch.
7. The KP pressure switches shall be used as built-in devices that cannot be accessible from outside
and protected against mechanical impact.
8. The KPs shall be installed in water free environment. In addition, protection of the KP switches
against corrosion shall be taken into consideration when using them in corrosive environment.
9. Cables shall not be in contact with sharp edges. The cables shall be connected with adequate
stress relieve in order to prevent that pulling forces can be carried thorough
the cable to the terminal.
10. In the event of pressure pulsation in the system, where switch is connected, these must be
effectively dumped to prevent failure of the bellows. The cycle frequency of KP switch shall be
kept as low as possible.
11. The KP switches shall not be installed in places where high level of vibration is present.
Disclaimer
The user is responsible for ensuring that third parties also comply with this Notice, e.g. in case that
the KP switches are supplied to third parties, and e.g. that all installation guides are available with
the KP switches during installation. It is required that all conditions of this guide are being met and
secured when using KP pressure switches.
Danfoss shall not be responsible for any kind of direct and indirect or consequential damage or loss,
including, but not limited to, loss of property, production, loss of profit, human injury arising out of
the explosion or fire caused by the flammable nature of refrigerant.
AN377474140179en-000101 | © Danfoss | DCS (rm) | 2021.05 3
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