Danfoss KP 1, KP 2, KP 5, KP 7, KP 15 Data sheet

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Data Sheet

Pressure switch Type KP

The KP pressure switches can be used as safety switches against too low a suction pressure and / or too high a discharge pressure in refrigeration and air conditioning systems. They can also be used to start / stop compressors and fans for air-cooled condensers.

They are available in both single and dual versions and include a single pole double throw (SPDT) switch.

Features:

• Ultra-short bounce time thanks to snapaction function (reduces wear to a minimum and increases reliability)

• Available with gold-plated contacts

• SPDT switch design Oers open or close switching action on pressure rise or fall

• Fail safe double bellows Prevent refrigerant loss and system contamination - standard on KP 7 and KP 17 pressure switches

• Convenient manual trip feature To test electrical contact function - no tools needed

• Pressure wire connectors For easy electrical wiring

• No spade or lug terminals required

• Integral 1⁄2 NPSM swivel cable connector Allows direct attachment of 1⁄2 in male pipe thread connector

• Lockplate Prevents tampering with range and dierential settings

• Universal mounting hole patterns

AI216886432258en-001101

421 4 2 1

Danfoss

A60-1032.10

ABCDEFGHI

SPDT - signal pole double throw

Pressure / Temperature

Rise

Drop

Load Cut-in (term.1-4)

Load Cut-out (term.1-2)

Load Cut-out (term.1-4)

Load Cut-in (term.1-2)

Line

Features

Values

Ambient temperature

-40 – 149 °F (175 °F for maximum 2 hours)

Maximum working pressure LP: MWP = 245 psig

HP: MWP = 465 psig

Maximum test pressure LP: pe = 285 psig

HP: pe = 510 psig

Switch

Single pole changeover switch (SPDT)

Contact load

120 V AC: 16 FLA, 96 LRA

240 V AC: 8 FLA, 48 LRA

240 V DC: 12 W pilot duty

Terminal D, dual switches

240 V, 50 VA

Control type

Material

KP 1, KP 2, KP 5, KP 7, KP 15, KP 17, KP 25

Tin bronze, no. CW452K, EN 1652 Nickel plated free cutting steel, no. 1.0737 /

1.0718 to EN 10277

KP with cap. tube

Copper SF-Cu, no. 2.0090 to DIN 1787

Load

Signal option

Bellows movement on pressure rise

Bellows movement on pressure drop

Pressure switch, Type KP

Product specication

Technical data

Table 1: Technical data

Cable entry

Integral 1⁄2 in female NPSM swivel cable connector allows direct attachment of 1⁄2 in male pipe thread connector.

Enclosure

~NEMA 1 This grade of enclosure is obtained when the units without top cover are mounted on a at surface or bracket. The bracket must be xed to the unit so that all unused holes are covered.

~ NEMA 2 This grade of enclosure is obtained when the units with top cover are mounted on a at surface or bracket. The bracket must be xed to the unit so that all unused holes are covered

Table 2: Materials in contact with the medium

Electrical wiring

Table 3: Electrical wiring

Figure 1: Low or high pressure

1.2.3.4.5.

Dual (low and high) pressure, LP signal

Dual (low and high) pressure, LP and HP signal

A2113

3 5

A2115

Load

LP - signal option

Line

Wiring instruction

HP - signal option

Low pressure, LP: KP 1 and KP 2

High pressure, HP: KP 5, KP 7W and KP 7B

Dual (low and high) pressure: KP 15, KP 17W, KP 17B and KP 25

Pressure switch, Type KP

Metric conversions 1 psi = 0.07 bar 5⁄9 (t1 °F - 32) = t2 °C

1.2.3.5.7.8.9.

10.

11.

12.

13.

14.

15.

16.

18.

19.

30.

Pressure switch, type KP

KP 1, KP 2, KP 5

KP 15, KP 25 are

KP 1, KP 2, KP 5, KP 15, KP 25, KP 7W, KP 7B, KP 17W, capillary tube

Low pressure setting spindle, (LP)

Dierential setting spindle

Main arm

High pressure setting spindle, (HP)

Main spring

Dierential spring

Bellows

LP connection

HP connection

Switch

Terminals

Earth terminal

Cable entry

Tumbler

Locking plate

Arm

Reset button

Pressure switch, Type KP

Design

Table 4: Design

The switch in the KP has a snap-action function where the bellows move only when the cut-in or cut-out value is reached.

The bellows are connected to the low or high pressure side of the system through connection (10) or (11).

The design of the KP gives the following advantages:

• high contact load

• ultra-short bounce time

• high resistance to pulsation

• vibration resistance up to 4 g in the range 0 – 1000 Hz

• long mechanical and electrical life

1.2.3.5.15.

18.

KP 7W (KP 7B), are

KP 7W (KP 7B), capillary tube

KP 17W (KP 17B), are

Pressure setting spindle, (LP)

Dierential setting spindle

Main arm

Pressure setting spindle, (HP)

Cable entry

Locking plate

Pressure switch, Type KP

The KP with designations W or B have been tested and approved by TÜV (Germany) in accordance with EN 12263.

Versions with designation W will cut in automatically when the pressure has fallen to the setpoint minus the

dierential.

Versions with designation B can be cut in manually using the external reset button when: KP 1 – the pressure has increased to 10 psi above the setpoint. KP 7 – the pressure has fallen 58 psi below the setpoint.

KP 7 and KP 17 are equipped with fail-safe double bellows; a regulation bellows and an outer bellows. The double bellows system protects against loss of system charge in the event of a bellows rupture.

A rupture in the outer bellows will cause the control to trip approximately 43 psi lower than the actual control setting. This features provides a warning without a loss of charge.

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 kept constant provided the permissible ambient temperatures are not exceeded.

Terminology

Reset

1.Manual reset: Units with manual reset can only be reset during operation by activation of the reset button.

2.Automatic reset: After operational stop, these units reset automatically.

Maximum working pressure

The Maximum working pressure is determined by the pressure that can be safely allowed in the refrigerating system or any of the units within it. The maximum working pressure is designated MWP.

KP 1, KP 2 and KP 5

Danfoss

60-760.13

KP 15 and KP 25

Danfoss

60-908.11

KP 7W and KP 7B

Danfoss

60-1014.12

KP 17W and KP 17B

Danfoss

60-1015.14

Pressure switch, Type KP

Test pressure

The test pressure is the pressure used in strength tests and / or leakage tests on refrigerating systems or individual parts in systems. The test pressure is designated Pe.

“Snap function”

A certain contact force is maintained until irrevocable “snap” is initiated. The time during which the contact force approaches zero is thus limited to a very few milliseconds. Therefore contact bounce cannot occur as a result of, for example, slight vibrations, before the cut-out point. Contact systems with “Snap function” will change over even when micro-welds are created between the contacts during cut-in. A very high force is created during cut-out to separate the contacts. This force immediately shears o all the welds. Thus the cut-out point of the unit remains very accurate and completely independent of the magnitude of the current load.

Setting

Pressure switches with automatic reset – LP: Set the LP start pressure on the “CUT-IN” scale (range scale). One

rotation of the low pressure spindle ~10 psi. Set the LP dierential on the “DIFF” scale. One rotation of the dierential spindle ~ 3 psi. The LP cut-out pressure is the LP cut-in pressure minus the dierential.

NOTE:



The LP cut-out pressure must be above absolute vacuum pe = 30 in Hg. If compressor will not stop at low cut-out pressure, check whether the dierential value is set at too high a value!

Metric conversions 1 psi = 0.07 bar

Pressure switches with automatic reset – HP: Set the HP cut-out pressure on the “CUT-OUT” scale. One rotation of the HP spindle ~ 33 psi. Set the HP dierential on the “DIFF” scale.

One rotation of the dierential spindle ~ 4 psi. The HP cut-in pressure is the HP cut-out pressure minus the dierential. Pressure switches with manual reset. Set the cut-out pressure on “CUT-OUT” scale (range scale). Low pressure controls can be manually reset when the pressure is equal to the cut-out pressure plus the dierential.

High pressure switches can be manually reset when the pressure is equal to the cut-out pressure minus the

dierential.

Cut-in and cut-out pressures for both the LP and HP sides of the system should always be checked with an accurate pressure gauge.

Dimensions [in] and weight [lb]

Table 5: Flare connection

KP 1, KP 2, KP 5, KP 7W and KP 7B

Danfoss

60-950.13

KP 15, KP 17W, KP 17B and KP 25

Danfoss

60-991.14

Single switches

Danfoss

60-1023.14

Dual switches

Danfoss

60-1024.14

Wall bracket

Angle bracket

Danfoss

60-1011.13

Pressure switch, Type KP

Table 6: Capillary tube connection

Net weight:

KP 1, KP 2, KP 5 and KP 7: approx. 0.7 lbs. KP 15, KP 17 and KP 25: approx. 1.1lbs.

Metric conversions:

1 in = 25.5 mm 1 lb = 0.454 kg

Table 7: KP switches, rear side

Table 8: Bracket dimensions

Type

Pressure

Low pressure (LP)

High pressure (HP)

Reset

Contact

functio

Code no.

Regulating

range

Dierential

∆p

Regulating

range

Dierential

∆p

Low pres‐

sure

High pres‐

sure

connection

[inHg] [psig]

[psi]

[psig]

[psi]

[LP]

[HP]

1⁄4 in are

Cap. tube w.

1⁄4 in are

nut 36 in

KP 1

Low

6 in – 108

10 – 58––

Auto–SPDT

060-200191

–

KP 1

Low

6 in – 108

10 – 58––

Auto–SPDT

–

060-205191

KP 1

Low

27 in – 10010––Man. (Min.)

–

SPDT

–

060-205291

(1)

KP 2

Low

6 in – 50

6 – 32––

Auto–SPDT

–

060-206391

KP 5

High––

115 – 465

25 – 85–Auto

SPDT

060-201491

–

KP 5

High––

115 – 465

25 – 85–Auto

SPDT

–

060-206491

KP 7W

(2)

High––

115 – 465

58 – 140–Auto

SPDT

060-200391

–

KP 7W

(2)

High––

115 – 465

58 – 140–Auto

SPDT

–

060-205391

KP7B

(2)

High––

115 – 46558–

Man. (Max.)

SPDT

060-200491

–

KP7B

(2)

High––

115 – 46558–

Man. (Max.)

SPDT

–

060-205491

KP 15

Dual

6 in – 108

10 – 58

115 – 465

Auto

SPDT/w. L P

signal

060-200891

–

KP 15

Dual

6 in – 108

10 – 58

115 – 465

Auto

SPDT/w. L P

signal

–

060-205891

KP 15

Dual

6 in – 108

10 – 58

115 – 465

Auto

Man. (Max.)

SPDT/w. L P

signal

–

060-205991

KP 15

Dual

6 in – 108

10 – 58

115 – 465

Man. (Min.)

Man. (Max.)

SPDT/w. L P

signal

–

060-206091

KP 15

Dual

6 in – 108

10 – 58

115 – 465

Auto

SPDT/w. LP +

HP signal

–

060-203191

KP 15

Dual

6 in – 108

10 – 58

115 – 465

Auto

Man. (Max.)

SPDT/w. LP +

HP signal

060-202691

–

KP 17W

(2)

Dual

6 in – 108

10 – 58

115 – 465

Auto

SPDT/w. LP +

HP signal

–

060-202991

Pressure switch, Type KP

Ordering

Figure 2: Ordering

For R22, R134a, R404A, R407A, R407C, R407F, R422B, R422D, R448A, R449A, R450A, R452A, R507A, R513A

For complete list of approved refrigerants, visit www.products.danfoss.com and search for individual code numbers, where refrigerants are listed as part of technical data.

Table 9: Ordering

(1)

With dial knob

(2)

With fail safe double bellows

Metric conversions

1 psi = 0.07 bar 5⁄9 (t1 °F - 32) = t2 °C

Document type

Approval authority

UL certicate

EAC document

EAC

EU declaration

Danfoss

CCC declaration

Danfposs

Quality - Assurance Certicate

TUV

Marine safety certicate

DNV G L ,LR and BV

Manufacturer declaration for China ROHS

Danfoss

Pressure switch, Type KP

Certicates, declarations, and approvals

The list contains all certicates, declarations, and approvals for this product type. Individual code number may have some or all of these approvals, and certain local approvals may not appear on the list.

Some approvals may change over time. You can check the most current status at danfoss.com or contact your local Danfoss representative if you have any questions.

Table 10: Certicates, declarations, and approvals

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Danfoss KP 1, KP 2, KP 5, KP 7, KP 15 Data sheet

Specifications and Main Features

Frequently Asked Questions

User Manual