3
Code: 02250144-- 517 SRV-- 250 --- SRV-- 2400
English
2 Installation
(see Fig. 4 / Fig. 5)
a) Dryer should be installed indoors; where this is not possible it must however be
installed in a clean dry area, with a temperature within the limits 41---122˚F
( 5 --- 5 0 ˚C), and sheltered from the effects of direct weather (including direct sun-
light).
b) The compressed air inlet temperature must never exceed 140˚F(60˚C). For dif-
ferent temperatures to those indicated above, consult the manufacturer.
The working pressure on the air side must not exceed 174 psig (12 barg).
The dryer must not be subjected to fatigue stress caused by repeated fluctuations
in the incoming air temperature.
c) Allow for a 60 inch (1,5 meters) gap around the unit to facilitate maintenanceand
ensure unimpeded air discharge from the condenser.
Air--cooled versions: leaveaspaceofatleast80inch(2meters)abovetheDryer.
The volume of the room in which the unit is installed must be more than 1800
foot
3(
50 m
3
).
d) For most compressed air applications we recommend following the installation
plan (see Fig. 1). This layout ensures optimum compressor, filter and dryer per-
formance and also guarantees excellent air quality whilst minimising operating
costs.
e) Donotobstructthedryerairgrilles.
f) Avoid recirculation of hot condenser air back into the condenser air inlet.
g) If the system is prone to instantaneous pressure surges which exceed the dryer’s
rated capacity, mount a suitably sized receiver near the overpressure source. For
more precise information, contact the manufacturer or distributor.
h) It is necessary to install a pre--- filter (max. 3 micron) on the dryer intake to pre-
vent rust, scale or other pollutants from entering the system and clogging the
condensate drain and heat exchangers, thereby causing severe pressure drops.
This filter must be close to the dryer inlet.
i) For water cooled versions it is recommended to install a filter on the condenser
water inlet to prevent the ingress of debris that will gradually choke the passages,
with negative effects on dryer performance.
j) Water--cooled versions
RECOMMENDATIONS FOR THE WATER AND ITS QUALITY
The water quality should satisfy the following conditions:
Parameter Concentration Parameter Concentration
Minimum inlet
˚
Oxygen <0.1 ppm
temperature
Iron (Fe) <0,2 ppm
Langelier Index 0 --- 1 Nitrate (NO
3
)<2 ppm
pH 7 . 5 --- 9 Alkalinity (HCO
3---
)70---300 ppm
Sulfate (SO
42 ---
)<50 ppm Hydrogen Sulfide (H
2
S) <0.05 ppm
Electrical conductivity 10---500µS/cm Free CO
2
<5 ppm
Ammonia (NH
3
)<1 ppm Aluminium (Al) <0.2 ppm
Chloride (Cl
---
)<50 ppm Condenser cooling 43.5---145 psig
To t a l H a r d n es s 70---150 ppm CaCO
3
water pressure
(3---10 barg)
k) Always install a bypass line with shut---off valves (supplied as option for
SRV-- 250 --- SRV-- 500) to permit maintenance or calibration without interrupting
the compressed air flow to the user.
The dryer pneumatic circuit must be protected by one or more safety valves to
prevent the design pressure 174 psig (12 barg) from being exceeded at all times.
These valves must be fitted in such a way that there is no risk of any expelled fluid
coming into contact with operators.
l) Correctly connect the dryer to the air inlet and outlet connections. If the com-
pressed air circuits are subject to vibration, usehoses to connect the dryer tocom-
pensate for this. If the circuits are subject to pulsations, eliminate them by con-
necting the dryer to an air chamber to equalise the pressure.
m) Do not connect condensate drains common to other pressurised drain lines in a
closed circuit. Make sure the outflow from the condensate drains is unimpeded.
Connect the condensate piping in such a way to ensure that sound levels are kept
to a minimum during drainage.
Ensure that all condensate is disposed of in a responsible manner, in accordance
with local norms concerning environmental protection.
