To Next Page

To Previous Page

RECIPROCATING COMPRESSORS

SOUND AND VIBRATION MANAGEMENT

Compressor

model

Sound power level*

at 50 hz dB(A)

Sound power level*

at 60 Hz dB(A)

Acoustic

hood

code no.

without hood with hood without hood with hood

NTZ048 72 65 72 65

7755001

NTZ068 71 64 75 68

NTZ096 84 78 84 77

7755002NTZ108 82 75 82 75

NTZ136 77 71 84 77

NTZ215 84 78 88 81

7755002

NTZ271 84 78 88 81

(*) Operating conditions:

R404A, Evap. temp.: -35°C, Cond. temp.: 40°C, 400 V / 50Hz

Sound produced by a compressor is

transmitted in every direction by the

ambient air, the mounting feet, the

pipework and the refrigerant in the pi-

pework. The easiest way to reduce the

sound transmitted through ambient

air is to ﬁt an acoustic hood accessory.

Because Maneurop® NTZ compressors

are 100% suction gas cooled and re-

Sound

Compressors in operation are one of

the sources of sound and vibration in

a refrigeration system. Both pheno-

mena are closely related.

quire no external cooling they can be

insulated or enclosed in a sound proo-

ﬁng material lined compartment.

Sound transmitted by mounting feet,

pipework and refrigerant should be

treated the same way as vibration (see

next section).

Vibration

The mounting grommets delivered

with the compressor should always

be used. They will largely attenuate

the compressor vibration transmit-

ted to the base frame. These rubber

grommets have been selected and

calculated in accordance with the vi-

bration frequencies that are typical for

the compressor. For that reason other

grommet types or brands shall not be

used.

The base on which the compressor is

mounted should be suﬃciently rigid

and of adequate mass to ensure the

full eﬀectiveness of the mounting

grommets. The compressor should

never be rigidly mounted to the base

frame otherwise high vibration trans-

mission would occur and the service

life reduced. Suction and discharge

lines must have adequate ﬂexibility in

3 planes. Eventually vibration absor-

bers may be required.

Vibration is also transmitted by the

refrigerant gas. Maneurop® NTZ com-

pressors have built-in muﬄers to re-

duce pulsation. To further reduce vi-

bration an extra discharge line muﬄer

can be installed.

Brand	Danfoss
Model	Maneurop NTZ Series
Category	Air Compressor
Language	English

Danfoss Maneurop NTZ Series Selection And Application Guidelines

Table of Contents

Other manuals for Danfoss Maneurop NTZ Series

Questions and Answers:

Danfoss Maneurop NTZ Series Specifications

Related product manuals