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Danfoss KP Series User Manual

Danfoss KP Series
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© Danfoss A/S RI.5D.A2.22 DKRCC.PI.C0A.A1.22-520H2749 1
Pressure Controls
KP 61 81
KP 61, 62, 63, 68, 69 vapor charge
KP 71, 73, 75, 77, 79, 81 adsorption charge (cross ambient)
Types
Auto reset Manual reset Auto reset
(w/o hand knob) w/ hand switch
Bulb types
Mounting requirement
Vapor charge
Max. bulb temperature Ambient temperatures
Enclosure
CAUTION: The mounting panel must be plane to avoid damage of control.
Cable entry Required cap. tube length on evaporator
80 in. cap. tube: min. 16 in.
196 in. cap. tube: min. 22 in.
060R9748
060R9748
INSTRUCTIONS
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Danfoss KP Series Specifications

General IconGeneral
DimensionsVaries by model
WeightVaries by model
Contact functionSPDT
Reset functionAutomatic or Manual
MediaAir, water, oil
ApprovalsEN
DifferentialVaries by model
Connection Size1/2"
Control RangeVaries by model
AccuracyVaries by model
Power SupplyNone (mechanical thermostat)
Switching Current16A (resistive load)
Protection ClassIP54
MountingVaries by model

Summary

Pressure Controls KP 61-81

Control Types and Bulb Specifications

Details different control types (auto/manual reset) and sensor bulb types (vapor/adsorption charge).

Installation and Environmental Requirements

Covers mounting, enclosure (IP33), cable entry, and ambient temperature limits.

Maximum Bulb Temperature Limits

Specifies the maximum allowable temperatures for the sensor bulbs based on model.

Evaporator Capillary Tube Length

Defines minimum required lengths for capillary tubes connected to the evaporator.

Wiring and Load Options

Wiring Connections and Safety

Guidelines for safe wiring practices, terminal block usage, and load ratings.

Load Option A vs. Load Option B

Explains how terminals 1-4 and 1-2 function for temperature rise/drop in different load options.

Manual Tripping and Reset

Manual Tripping Procedure

Instructions for testing electrical contacts by manually tripping the control.

Manual Reset Procedure

Steps to resume operation after a safety cut-out, including reset knob usage.

Adjustment Spindles and Differential Setting

Adjustment Spindle Location and Usage

Identifies range and differential adjustment spindles and their operation (CW/CCW).

Determining Differential

Utilizes graphs to determine the correct differential for vapor charge controls.

Differential for Adsorption Controls

Explains how to calculate differential for adsorption charge controls (KP 71-81).

Setting High and Low Set Points

Setting for Auto Reset Controls

Procedure to adjust range (HSP) and differential spindles for auto reset models.

Setting for Manual Reset Controls

Procedure to adjust range (LSP) for manual reset models where differential is fixed.

Hand Switch Operation

Details the function of the hand switch in auto and micro-stop positions.

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