Danfoss KP 21 Manual de usuario

Installation guide

Pressure switch

Type KP 21

060R9410

Ambient temperatures

Caution: Do not mount a switch in a position where

dirt, sediment or oil will aect the operation of the switch.

Enclosure

CAUTION: The mounting panel must be plane to avoid damage of switch.

Low pressure (LP) side setting

CUT-IN minus DIFFERENTIAL equals CUT-OUT

Test pressure (p test)

High pressure (HP) side setting

CUT-OUT minus DIFFERENTIAL equals CUT-IN

Ptest max.

20 bar Pe

Ptest max.

20 bar Pe

LP HP

1. Adjust range spindle to

desired CUT-IN value

2. Adjust dierential

spindle to desired

DIFFERENTIAL

(DIFF.) value

scale

1. Adjust range spindle to

desired CUT-OUT value.

2. DIFFERENTIAL (DIFF.)

is xed.

Value printed on scale plate.

tlmin. −40°C (−40°F)

−25ºC (−13ºF)

tl max 65ºC (150ºF)

scale

2 IC.PI.P10.G3.02 / 520B5881 © Danfoss A/S (AC-MCI / jmn), 2013-11

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 ngers or with any tool.

Controls with low pressure (LP) and

high pressure (HP) signal

Terminal block

Contact load

Alternating current:

AC 1: 16 A, 400 V

AC 3: 16 A, 400 V

AC15: 10 A, 400 V

Max. starting current (L.R.): 112 A, 400 V

Direct current:

DC13: 12 W, 220 V control current

Function

Note!

= Load

= Signal option

= Bellows movement on pressure rise

= Bellows movement on pressure drop

CAUTION: Use terminal screws furnished

in the contact block.

Use tightening torque (20 lb.) in 2.3 Nm.

Use copper wire only.

Low pressure (LP) side:

A-C close on LP rise

A-C open on LP drop

High pressure (HP) side.

A-C open on HP rise

A-C close on HP drop

LP signal option:

A-B close on LP drop

HP signal option

A-D close on HP rise

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