Parker Hiross ATT140, User Manual

   English

2 / 14

  ATT140-340 

2 Introduction

This manual refers to refrigeration dryers designed to guarantee high 
quality in the treatment of compressed air.

2.1 Transport

The packed unit must:

• remain upright;
•  be protected against atmospheric agents;
•  be protected against impacts.

2.2 Handling

Use a fork-lift truck suitable for the weight to be lifted, avoiding any type 
of impact. 

2.3 Inspection

•  All the units are assembled, wired, charged with refrigerant and oil 
and tested under standard operating conditions in the factory;
•  on receiving the machine check its condition: immediately notify the 
transport company in case of any damage;
•  unpack the unit as close as possible to the place of installation. 

2.4 Storage

Y 

If several units have to stacked, follow the notes given on the pack-

ing. Keep the unit packed in a clean place protected from damp and bad 
weather.

3 Installation

For the correct application of the warranty terms, follow the instructions 
given in the start-up report, fi ll it and send it back to Seller.

3.1 Procedures

Install the dryer inside, in a clean area protected from direct atmospheric 
agents (including sunlight).

Y

 Comply with the instructions given in par. 9.2 and 9.3.

Y

 The fi lter elements (for 3 micron fi ltration or better) must be replaced 

at least once a year, or sooner as per manufacturer recommendations.

Y

 Correctly connect the dryer to the compressed air inlet/outlet con-

nections,

3.2 Operating space

Y

Leave adequate clearance around the dryer maintenance opera-

tions and clearance to ensure correct air fl ow. (~ 1,5 m).

3.3 Versions

Air-cooled version (Ac)

 Do not create cooling air recirculation situations. Do not obstruct the 
ventilation grilles.

Water-cooled version (Wc)

If not provided in the supply, fi t a mesh fi lter on the condensation water 
inlet.

Y, 

Inlet condensation water characteristics:

Temperature

≥50°F (10°C)

CaCO

3

70-150 ppm

Pressure

43.5-145 PSIg

(3-10 barg)

O

2

<0.1 ppm

PH

7.5-9

Fe

<0.2 ppm

Electrical
conductivity

10-500 μS/cm

NO

3

<2 ppm

Langelier
saturation 
index

0-1

HCO

3

-

70-300 ppm

SO

4

2-

<50 ppm

H

2

S

<0.05 ppm

NH

3

<1 ppm

CO

2

<5 ppm

CL

-

<50 ppm

Al

<0.2 ppm

Please note that for special cooling water types such as demineralized, 
deionized or distilled it is necessary to contact the manufacturer to verify 
which kind of condenser should be used since the standard material 
may not be suitable.

3.4 Tips

To prevent damage to the internal parts of the dryer and air compres-
sor, avoid installations where the surrounding air contains solid and/or 
gaseous pollutants (e.g. sulphur, ammonia, chlorine and installations in 
marine environments).
The ducting of extracted air is not recommended for versions with axial 
fans.

3.5 Electrical connection

Use approved cable in conformity with the local laws and regulations  
(for minimum cable section, see par. 9.3).
Install a differential thermal magnetic circuit breaker with contact open-
ing distance of 3 mm ahead of the system (RCCB - IDn = 0.3A) (see the 
relevant current local regulations). 
The nominal current In of the magnetic circuit breaker must be equal to 
the FLA with an intervention curve type D.

Phases Monitor

If appears to display the alarm “A41 “, during the start up of the dryer, 
the user must verify the  wiring of the input terminals of the  discon-
necting switch of the dryer.

3.6  Condensate drain connection

Y

The dryer is supplied either with a fl oat drain, a timed drain or an 

electronic level sensing drain.
If a timed or electronic unloader is installed, use terminals CN “R1-S1” 
(see par. 9.8).
For timed and electronic drains: refer to separate manual supplied with 
the dryer for specifi c details concerning the condensate drain.

Y

 Make the connection to the draining system, avoiding connection in 

a closed circuit shared by other pressurized discharge lines. Check the 
correct fl ow of condensate discharges. Dispose of all the condensate in 

conformity with current local environmental regulations.

3.7  Connections discharge purge air

The dryer has an air purge connected directly to the unit (or which can be 
connected away from the unit).
The extension hose must be rubber with max length 10m (synthetic rub-
ber with inner steel spiral), resistant to temperatures of up to 90° and 
pressures up to 10 bar.

3.8  Connection to the air bleeder

To reduce the noise when bleeding air from the tanks, a silencer must be 
connected (supplied separately). 
The silencer can be connected directly to the unit or away from the unit.
In the latter case, it must be connected using a rubber hose, max length 
10m (synthetic rubber with inner steel spiral), resistant to temperatures 
of up to 50° and pressures up to 10 bar.

Important: to ensure the correct functioning of the air bleeder, com-
ply with the dimensions indicated for the extension in the appendix 
in para. 9.7. (Ø

Int. 

= internal diameter)

3.9  Connecting the fi lter oil drainage

The oil residues generated by the fi lter are conveyed through a rilsan 
hose (

Ø

 8mm), out of the dryer in the point indicated in para. 9.6.

The drainage hose is fi tted with an end coupling so that additional exten-
sions can be fi tted by the user.