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 The compressor must only be 

used for its designed purpose(s) 

and within its scope of application 

(refer to «operating limits»). 

Consult Application guidelines and 

datasheet available from cc.danfoss.

com

 Under all circumstances, 

the EN378 (or  other 

applicable local safety 

regulation) requirements 

must be fulfilled.

The compressor is delivered under 

nitrogen gas pressure (between 

0.3 and 0.7 bar) and hence can-

not be connected as is; refer to 

the «assembly»

 

section for further 

details.

The compressor must be 

handled with caution in the 

vertical position (maximum 

offset from the vertical : 15°)

© Copyright Danfoss | Commercial Compressors | 2016.04

FRCC.PI.032.A3.02 - 8510269P01B

Instructions

M

DGT

HP

LPS

180 s

TH

LP

CC

F1

F1

KM

KM

KM

KA

KA

A1

A2

A3

KA

KA

KS

KS

KS

L1

L3

L2

Q1

T1

T3

T2

LLSV

KS

CXH140

These Danfoss scroll compressors are protected against overheating 

and overloading by an internal safety motor protector. However, an ex-

ternal manual reset overload protector is recommended for protecting 

the circuit against over-current. 

Fuses .................................................................... F1

Compressor contactor ....................................KM

Control relay ......................................................KA

Safety lock out relay ......................................... KS

Pump-down pressure switch ..........................LP

High pressure safety switch............................HP

Control device ....................................................TH

Liquid Line Solenoid valve ..........................LLSV

Discharge gas thermostat ...........................DGT

Fused disconnect ..............................................Q1

Compressor motor ............................................ M

Safety pressure switch ................................... LPS

Control circuit  ...................................................CC

All Wiring diagrams are with pump-down cycle

Installation and servicing of the compressor by qualified personnel only. Follow 

these instructions and sound refrigeration engineering practice relating to 

installation, commissioning, maintenance and service.

A

:  Model number  

D

:  Supply voltage, Starting current & Maximum operating current

B

:   Serial  number 

E

:  Housing service pressure

C

:   Refrigerant   

F

:  Factory charged lubricant

A

D

B

C

E

F

R410A 

5

30

T

C

 (°C) 

T

(°C)

1 – Introduction

These instructions pertain to the Danfoss scroll 

compressors  CXH used for air-conditioning 

systems. They provide necessary information 

regarding safety and proper usage of this 

product.

2 – Handling and storage

 •  Handle the compressor with care. Use the 

dedicated handles in the packaging. Use the 

compressor lifting lug and use appropriate 

and safe lifting equipment.

 •  Store and transport the compressor in an 

upright position.

  •   Store the compressor between -35°C and 50°C.

 •  

Don’t expose the compressor and the 

packaging to rain or corrosive atmosphere.

3 – Safety measures before assembly

 Never use the compressor in a flammable 

atmosphere.

 •  The compressor ambient temperature may 

not exceed 50°C during off-cycle.

 •  Mount the compressor on a horizontal flat 

surface with less than 3° slope.

 •   Verify that the power supply corresponds to 

the compressor motor characteristics (see  

nameplate).

Danfoss scroll compressors

CXH

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