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3.2
Operating space
Y
Leave a space of 60 inches (1.5 m) around the unit.
Leave a space of 80 inches (2 m) above dryer models with vertical
condensation air expulsion.
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, fit a mesh filter on the condensation
water inlet.
Y ,
Inlet condensation water characteristics:
≥ 50˚F (10˚C)
CaCO
Temperature
43.5 ---145 PSIg
Pressure
(3 ---10 barg)
PH
7.5 ---9
Electrical
10 ---500 µS/cm
conductivity
Langelier
saturation
0 ---1
HCO
index
2---
SO
<50 ppm
4
NH
<1 ppm
3
---
Cl
<50 ppm
3.4
Tips
To prevent damage to the internal parts of the dryer and air com-
pressor, avoid installations where the surrounding air contains
solid and/or gaseous pollutants (e.g. sulphur, ammonia, chlorine
and installations in marine environments).
3.5
Electrical connection
Use approved cable in conformity with the local laws and regula-
tions (for minimum cable section, see par. 8.3). Use copper con-
ductors only, rated for a temperature of at least 140˚F (60˚C).
If the dryer is connected to a circuit protected by fuses, use time
delay fuses marked "D".
Connect the 3 cable phases to terminals L1--- L2--- L3 of the dis-
connecting switch and the ground wire to the green screw or bolt
identified by the label "GR". Install a differential thermal mag-
netic circuit breaker with contact opening distance of 0.12 inches
(3 mm) ahead of the system (IDn = 0.3A) (see the relevant cur-
rent local regulations).
3.6
Condensate drain connection
Y
Make the connection to the draining system, avoiding con-
nection in a closed circuit shared by other pressurized discharge
70 ---150 ppm
3
lines. Check the correct flow of condensate discharges. Dispose
of all the condensate in conformity with current local environ-
O
<0.1 ppm
2
mental regulations.
Fe
<0.2 ppm
4
Commissioning
NO
<2 ppm
3
4.1
Preliminary checks
---
70 ---300 ppm
3
Before starting the dryer, make sure:
H
S
<0.05 ppm
2
a) installation was carried out according that given in the section
CO
<5 ppm
3;
2
b) the air inlet valves are closed and that there is no air flow
Al
<0.2 ppm
through the dryer;
c) the power supply is correct;
d) with Wc version, open the cooling water circuit a few minutes
before starting the dryer.
4.2
Starting
a) Start the dryer before the air compressor;
b) switch the power on by turning the MAIN SWITCH
"I ON": the POWER LED (2) lights up turning yellow;
x
c) press
pressor switches on; the dew point is displayed.
: the POWER LED (2) turns green and the com-
SRL- - 250 --- SRL- - 1000 (60Hz)
Y
Scroll Compressor: if connected with the wrong phase se-
quence it turns in the opposite direction, with the risk of being
damaged (in this case it is very noisy); immediately invert the
phases.
Y
Fans (Ac version): if connected with the wrong phase se-
quence they turn in the opposite direction, with the risk of being
damaged (in this case the air exits the dryer cabinet from the con-
denser grilles instead from the fan grille --- see par. 8.6 and 8.7 for
correct air flow); immediately invert two phases.
d) Wait 5 minutes, then slowly open the air inlet valve;
e) slowly open the air outlet valve: the dryer is now drying.
4.3
Operation
a) Leave the dryer on during the entire period the air compres-
sor is working;
b) the dryer operates in automatic mode, therefore field settings
are not required;
c) in the event of unforeseen excess air flows, by--- pass to avoid
overloading the dryer;
d) avoid air inlet temperature fluctuations.
4.4
Stop
a) stop the dryer 2 minutes after the air compressor stops or in
any case after interruption of the air flow;
b) make sure compressed air does not enter the dryer when the
dryer is disconnected or if an alarm occurs.
x
c) Press
: the POWER LED (2) turns yellow again;
d) Turn the MAIN SWITCH
power off.
Y
Wc version, close the water circuit with the dryer stopped.
&
to
2
&
to "O OFF" to switch the
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