Johnson Controls AS instruction manual Description, Sound pressure level

5.0 Description

The pumps of series AS are centrifugal side channel self-priming with star-shaped impeller; the ports are located on the longitudinal axe with the suction located on the front of the pump cover. All models have threaded connections for fittings according to DIN 11851 standard (unless otherwise requested). The pump front cover is easy to open to improve cleaning and inspection operations; all models are fitted with mechanical seals and the materials used for the components of mechanical seal are chosen according to the liquid to be pumped.

Designed in close-coupled version, fitted with indepandant standard electric motors B5 shape, IP 55 protection (unless otherwise requested).

These pumps are designed for applications where the liquid to be pumped :

•is not subject to pollution of any kind,

•is at a temperature between -30°C and +140°C,

•must under no circumstances come into contact with the outside environment,

•is chemically aggressive.

5.1Sound pressure level

The sound pressure level of self-priming pumps is the following (see table):

The measurement has been made by means of a phon-meter placed at 1 m distance from the pump and at a height of 1.6 m from the ground.

Preliminary condition is that the pump is fixed correctly; the above mentioned values do not take into account external noise sources (e.g. valves, abrupt hydraulic deflections).

Pump type	dB(A)
AS 40	< 80
AS 42	81-85
AS 50	81-85
AS 52	86-90
AS 60	86-90
AS 65	86-90
AS 80	86-90

IM-AS/02.00 GB (0412) 5