Introduction; Transport; Handling; Inspection - Boge DS2 Manuel D'utilisation

English
2

Introduction

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

2.1 Transport

Th e 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 lift ed, avoiding any type
of impact.

2.3 Inspection

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

2.4 Storage

If several units have to stacked, follow the notes given on the packing.
Keep the unit packed in a clean place protected from damp and bad
weather.
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Installation

3.1 Procedures

Install the dryer inside, in a clean area protected from direct atmospher-
ic agents (including sunlight).
Y
Comply with the instructions given in par. 8.2 and 8.3.
It is recommended that all dryers be fi tted with adequate pre-fi ltration
near the inlet to the dryer.
Y
Pre-fi lter element (for 3 micron fi ltration or better) must be replaced
at least once a year, or sooner as per manufacturer recommendations.
Y
Do not invert the compressed air inlet and outlet connections and
observe the maximum tightening torque (N x m) as specifi ed in par. 8.3.

3.2 Operating space

Y
Leave a space of 1.5 m around the unit.

3.3 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).
Th e ducting of extracted air is not recommended for versions with axial
DS2-30
fans.

3.4 Electrical connection

Use approved cable in conformity with the local laws and regulations
(for minimum cable section, see par. 8.3).
Install a diff erential thermal magnetic circuit breaker with contact open-
ing distance 3 mm ahead of the system (IDn = 0.3A) (see the relevant
current local regulations).
Th e nominal current In of the magnetic circuit breaker must be equal to
the FLA with an intervention curve type D.

3.5 Condensate drain connection

Th e dryer is fi tted with an eletronic condensate drain (electronic level-
sensing)
For further information on the drain, consult the specifi c, separated
manual supplied with the dryer.
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.
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Commissioning

4.1 Preliminary checks

Before commissioning the dryer, make sure:
• installation was carried out according that given in the section 3;
• the air inlet valves are closed and that there is no air fl ow through the
dryer;
• the power supply is correct.

4.2 Starting

a) Start the dryer before the air compressor by means of the main power
switch "14"; the power lamp will illuminate (green);
b) aft er at least 5 minutes slowly open the air inlet valve and subse-
quently open the air outlet valve: the dryer is now performing its air
drying function.

4.3 Operation

a) Leave the dryer on during the entire period the air compressor is
working;
b) the dryer operates in automatic mode, therefore fi eld settings are not
required;
c) in the event of unforeseen excess air fl ows, by-pass to avoid overload-
ing the dryer.

4.4 Stop

a) Stop the dryer 2 minutes aft er the air compressor stops or in any case
aft er interruption of the air fl ow;
b) do not allow compressed air to fl ow through the dryer when the lat-
ter is not running;
c) switch off at the main power switch «14». Th e power light goes out
and the compressor stops.
5

Control

11: Dew point indicator
14: Main Power Switch
Th e dew point indicator can show one of three conditions:
blue: dew point too low
green: dew point ideal
red: dew point too high

5.1 Option Free contact

An adjustable thermostat (with free contacts) to signal high dew point
is optionally available. A timer allows the delay to the start of the dryer
of the alarm signal (10 minutes).
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