Contimac Silent 705 Series User manual

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SILENT 705 SERIES
Order n° : 27204 - 27200 - 27202 - 27206
Distributed by
MANUAL - HANDLEIDING
- MANUEL
EN
EN - pg. 1
NL - pg. 19
FR - pg. 37

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Read carefully this maintenance and service handbook in all its parts
before operating the compressor. This machine has been tested accor-
ding to the machine directive and further changes, and integration. See
Declaration of Conformity.
Our company thanks you for choosing one of our products and invites you to read this service
and maintenance handbook thoroughly, where you can find all the necessary information for a
proper use of the machine; you are kindly requested to follow the directions given hereby and
to read carefully this manual in every part. You are also requested to store this handbook in a
safe place and to keep it unaltered. We reserve the right to modify its content without notice, to
include variations and improvements. Any reproduction or translation of this handbook is strictly
forbidden, without prior notice to the owner.
WARRANTY
Liability of warranty is established by the general terms in force. This warranty gives the right to
the Purchaser only to replacement of defective parts. However the guarantee is disregarded if
the machine proves to have been improperly used or tampered with by individuals that have
not been authorised by us or in any case using technical components that are not compliant.
SYMBOLOGY
Please find hereby a short legend with the indication of the symbology used.
DANGER : recalls the operator’s attention to situations which can prejudice the
security of people for injuries or danger of death.
CONTENTS
WARRANTY ..................................................................................................................................2
SYMBOLOGY................................................................................................................................2
1 INTRODUCTION.......................................................................................................................3
2 POSITION OF THE OPERATING CONTROLS AND COMPONENTS................................4
3 GENERAL INFORMATION ......................................................................................................5
4 SAFETY PRECAUTIONS............................................................................................................6
5 STARTING THE COMPRESSOR ...............................................................................................7
6 HOW TO USE THE COMPRESSOR.......................................................................................10
7 HANDLING OF THE COMPRESSOR.................................................................................... 11
8 MAINTENANCE...................................................................................................................... 11
9 ELECTRICAL DIAGRAMS ........................................................................................................15
10 PROBLEMS: CAUSE AND REMEDY. ...................................................................................17
CUSTOMER SERVICE.................................................................................................................18

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ATTENTION : recommends to pay attention in situations and problems of the
efficiency of the machine, which do not prejudice the security of people.
IMPORTANT : recommends to pay attention to important general informations
which do not prejudice nor the people security, nor the right functioning of the
machine.
1 INTRODUCTION
This use and maintenance manual refers to the machine and to the range of machine mentioned
in the casing. It represents your guide to the compressor installation, use and maintenance you
have purchased. The use and maintenance manual is always to be kept in a safe place and
easily accesible. The manual is an integrant part of the compressor.
1.1 RECEIVING THE MACHINE DOCUMENTS
When the machine is delivered, (within the EU), you will receive:
•Use and maintenance manual.
•CE conformity mark on the machine.
•CE declaration of conformity.
When the machine is delivered, check that the product is intact, and that everything is as per
contract. Dispose of the possibile packing material according to the laws in force.
1.2 FIELD OF APPLICATION
The compressor with piston alternate group was designed and built only to produce compres-
sed air.
Do not use the machine for differenr purposes, from those the machine has
been designed for.
1.3 DESCRIPTION OF THE MACHINE
The machine described in this service and maintenance book is a compressor with a piston
alternate group and with belt drive. There are different versions: with or without air tank, with or
without dryer.
1.4 IDENTIFICATION
In order to identificate the machine during the request of spare parts or assistance, it is always
necessary to refer to the machine data on the plate with CE mark, situated on the compressor.

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2 POSITION OF THE OPERATING CONTROLS AND COMPONENTS.
The figure below reprsents the machine and the main parts it is composed of.(see fig.2)
Legend of the main component of the machine (fig.2).
P Description
1 Air tank
2 Electric motor
3 Head compressor
4 Retaining valve
5 Oil tank

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6 Emergency stop
7 Air filter
8 Electrical system
9 hour Meter
10 Manostat
11 Dryer
12 Casing
13 Straps
14 Pulley
15 Pulley
16 Electric fan
17 Manometer
3 GENERAL INFORMATION
3.1 MACHINE DIMENSIONS
3.2 TECHNICAL FEATURES
Model n°
27204 27200 27202 27206
Voltage
400V - 3 400V - 3. 400V - 3. 400V - 3.
Air input
700 l/min. 700 l/min. 700 l/min. 700 l/min.
Tank capacity
-. 270 l 270 l 270 l
Dryer
- - yes -
Max. pressure
10 bar 10 bar 10 bar 13 bar
Rotations
1000 rpm 1000 rpm 1000 rpm 1000 rpm
Motor capacity
5.5 HP 5.5 HP 5.5 HP 5.5 HP
Noise level
<68 dB(A) <68 dB(A) <68 dB(A) <68 dB(A)
Rod Iron Cylinders
2 (K28) 2 (K28) 2 (K28) 2 (K28)
Aftercooler
yes yes yes yes
2 steps
yes yes yes yes
Thermic safety
yes yes yes yes
Delivered on silent blocks
yes yes yes yes
Dimensions (LxWxH)
700 x 1200 x 1000 mm 700 x 1550 x 1650 mm 730 x 1550 x 1730 mm 700 x 1550 x 1650 mm
Weight
181 kg 248 kg 273 kg 248 kg

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3.3 NOISE AND VIBRATIONS
Equivalent continuous A (LpA eq,T)< 70 dBA -weighted sound pressure.
Sound power level A LWA<70dBA weighted.
The test has been carried out according to pr EN120533.
3.4 WARNING AND INFORMATION LABELS AND TAGS
1 General warnings
2 Electric system hazard
3 Direction of motor rotation
4 SAFETY PRECAUTIONS
Read carefully this book in every part before using the coaxialscrew compressor.
In case of necessity call our technical assistence
Do not make repairings. If repairings are made by inexpert people, the security
level of the machine could be altered.
Carry out all the work and maintenance stages according to the norms in force
about hygiene and working security.
To handle the compressor use appropriate equipment as explained in section 7 INSTRUCTI-
ONS TO HANDLE THE COMPRESSOR.
4.1 OPERATOR WORKING RULES
The operations described in this section have to be carefully considered when using
the compressor.
Always wear individual protection devices, according to the laws in force in matter of hygiene
and safety of workers (it is advisable to wear protection glasses). During maintenance opera-

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tions please dispose of possible waste carefully, and follow the regulations in force. The labels
and the tags situated on the machine are always to be kept readable. Do not carry out repairs
or maintenance when the machine is supplied with power. Do not approach to any components
of the system with heat sources or flames.
•Do not use the machine for unintended use.
•It is forbidden to use water jets under pressure (high-pressure water jet machine) to wash
the compressor.
•In case of demolition observe the regulations in force of the country where this operation
is carried out (oil presence).
4.2 SAFETY REGULATIONS
•The personnel allowed to work with the machine must be adult and responsible and must
examine this manual.
•When the machine is on do not remove the safety protections and the casing; do not
touch moving parts.
•Do not disconnect the electrical plug by pulling the cable and do not step on it or crash it
with heavy objects or sharp edges.
•Do not handle the compressor while it is connected to the electric system or while the air
tank is under pressure.
•If the compressor is used with electric extensions, make sure that the extension mark meets
the intended use.
•Before using the compressor, check if the protections or other parts show any externally
visible damage; in that event qualified personnel must repair or replace them.
•Use original spare parts only; the use of NOT ORIGINAL spare parts causes the
cancellation of the warranty. Use the compressor with rated voltage as indicated on the
data tag (see fig 1).
•Do not wash the casings and the plastic parts with corrosive liquid.
•If the compressor works with strange noises or vibrations, stop it immediately and if
required, ask for assistance.
•Do not carry out modifications to the compressor without the authorization of the
constructor.
•Do not direct the air stream against persons or animals.
•If the compressor is used for painting, avoid the closeness with naked flames; make sure
that there is enough air change (read section 5.1 and see fig.5); wear safety protections
•according to the regulations in force.
5 STARTING THE COMPRESSOR
Before starting the stacker read compressor all the maintenance and use book.
Before using the compressor, check if everything corresponds to what was requested during the
purchasing.

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5.1 POSITIONING OF THE COMPRESSOR
For the good running of the compressor, it must be located in an appropriate place, which pre-
sents the following features.
The room temperature must be between 5°C and 45°C. With a temperature lower than 5°C the
working conditions of the fluids are alterated, with possible seizures. With temperature higher
than 45°C the exchanger does not cool properly the oil in the circuit, enabling the temperature
safety device. Do not use the compressor in explosion prone areas or where there is high risk of
fire; use it in areas with good air circulation only, far from inflammables. To make the natural air
change easier, it is necessary that the room presents outwards openings, nearby the floor and
the ceiling. See fig. 5 In the room where the compressor is used, there should not be any trace
of dust to avoid filter clogging and malfunction. To make the maintenance operations easier
and to allow good air circulation, it is recommended to leave enough free space around the
compressor.
The flooring supporting the compressor must be stable and flat. The compressor, thanks to its
features, does not need fixed vibration-damping on the standing feet.
5.2 CONNECTION TO THE ELECTRICITY NETWORK
The compressor must be connected to the electricity network by qualified personnel
according to the accident prevention regulation EN 60204
The compressor and, if supplied, the dryer must be: -earth connected to guard the operator from
electric shock. -the supply voltage must correspond to the one shown on the CE tag (see fig. 1).
-The electric supply must be realized with cable, whose section has to be suited to the machine
power. - do not absolutely use the plug of the connection cable as switch; to start the motoruse
the appropriate magnetothermic switch, with proper amperage. The following table describes
the values of the conductor section, depending on the machine power.
Power(kW - Hp) 400 V
4 - 5.5 1.5 mm²
To avoid short-circuit, guard the electrical network with appropriate fuses and magnetothermic
switch. The following table describes the features of the magnetotermic switch and of the fuses

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to use according to the machine power.
Power(kW - Hp) Magnetothermic switch Fuses
4 - 5.5 20 A -
EXTENSIONS
If the connection is carried out using extensions, use earthing extensions. The section of the
extension cable must be suited to the electric current absorbed. Do not crash or damage the
cable. The cable section of three phase compressor must be proportional to the length. See the
following table.
Power(kW - Hp) 220/230V
50/60 Hz
3 ph
380/400 V
50/60 Hz
3 ph
4 - 5.5 4 mm² 2.5 mm²
ROTATION DIRECTION CHECK
At the back of the compressor, check through the grid if the belt rotation matches the direction
indicated on the adhesive in Fig. 6. In case of contrarotation stop the compressor immediately
and invert the poles.
5.3 CONNECTION TO THE PNEUMATIC SYSTEM
Always use pneumatic pipes with features of max. pressure and appropriate sections.
In the case of ground compressor, with air tank or dryer, connect the compressor to the proper
3/4” coupling in the pneumatic system. See fig.7. The diameter of the connection must be lar-
ger than or equal to the compressor outlet. Between the compressor and the pneumatic system
install 2 spherical taps of adequate capacity.

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6 HOW TO USE THE COMPRESSOR
Only a qualified expert is allowed to carry out the first starting of the compressor
(functional test)
6.1 CALIBRATION OF THE AIR PRESSURE SWITCH.
The calibration of the pressure switch allows to regulate the maximum pressure.
The pressure switch must be calibrated when there is pressure in the system. The cali-
bration is carried out through the following phases:
1 Operate the automatic stop of the motor, without using the emergency stop button.
2 Cut off the electric power to the system using the wall switch outside the compressor.
3Remove the screws and lift the upper panel Pos. A Fig. 8 and identify the Pressure Switch
Pos. B
4Remove the support pressure pos.C.Unscrew pressure switch lid retaining screw Pos. D
and remove the lid Pos. E like in Fig.8.