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1.5 Danger zone
1
2
3
1. Risk of injury from hot surfaces
2. Risk of injury by suddenly escaping gas
3. Risk of injury by suddenly escaping of hot regeneration air
4. Risk of injury by high voltage
1. Hot surfaces
During operation, certain surfaces of the dryer reach high temperatures.
2. Excess pressure warning
The entire dryer is under pressure. Gas that is suddenly released through
the valves can lead to serious injury.
3. Notice of danger
Risks of injury by hot regeneration air (Regeneration air can reach tempe-
rature above 70°C up to 100°C for short period of time)
4. Voltage
Various parts of the dryer are live. These components may only be con-
nected, opened and serviced by authorised technical personnel.
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;
ATT+ 140 / 340
• unpack the unit as close as possible to the place of installation.
2.4 Storage
4
Y
If several units have to stacked, follow the notes given on the pa-
cking. 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).
!
The product installed must be suitably protected against fi re risk
(ref. EN378-3).
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
43.5-145 PSIg
Pressure
O
(3-10 barg)
2
PH
7.5-9
Fe
Electrical
10-500 μS/cm
NO
conductivity
Langelier
saturation
0-1
HCO
index
2-
SO
<50 ppm
H
4
2
NH
<1 ppm
CO
3
CL
-
<50 ppm
Al
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. 8.3).
Install a differential thermal magnetic circuit breaker with contact ope-
ning 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 "≥" to the
FLA with an intervention curve type D.
Phases Monitor
If appears to display the alarm "aPHSbit ", during the start up of the
dryer, the user must verify the wiring of the input terminals of the di-
sconnecting switch of the dryer.
3.6 Condensate drain connection
Y
The dryer is equipped with a capacitive drain, but it can be changed
to timed or external drain.
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 extension hose must be rubber with max length 10m (synthetic rub-
70-150 ppm
ber with inner steel spiral), resistant to temperatures of up to 90° and
3
pressures up to 10 bar.
<0.1 ppm
3.8 Connection to the air bleeder
To reduce the noise when bleeding air from the tanks, a silencer must be
<0.2 ppm
connected (supplied separately).
The silencer can be connected directly to the unit or away from the unit.
<2 ppm
3
In the latter case, it must be connected using a rubber hose, max length
10m (synthetic rubber with inner steel spiral), resistant to temperatures
-
70-300 ppm
of up to 50° and pressures up to 10 bar.
3
Important: to ensure the correct functioning of the air bleeder, com-
ply with the dimensions indicated for the extension in the appendix
S
<0.05 ppm
in para. 8.6. (Ø
<5 ppm
2
<0.2 ppm
2 / 14
= internal diameter)
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