CTA
Instruction Manual
MPE
Reference: MT0027DA
This document may be modified without prior notice
4
Revision date: 11/05/06
Even partial reproduction is prohibited without authorisation in writing
2
Safety
Everyone involved in installing, using and servicing Mastéria dryers is concerned by this manual and must
have read and understood the instructions given below.
Danger of electric shock and burns: every badly connected or misused electrical appliance is
dangerous. For your personal safety and that of all the people who will approach this appliance,
rigorously follow all the security instructions given in this manual. All interventions on the refrigeration
circuit must be carried out by specialists. Every leak or anomaly must be pointed out to qualified
people immediately.
2.1
General precautions
Compressed gases which can be dried
Your Mastéria drier is designed to dry compressed
air. You must obtain prior authorisation from the
manufacturer in writing before drying any other
gas.
Precautions to take before drying compressed air
Ensure that the free parts of the components
designed to expel the compressed air are blocked
sufficiently to prevent whipping shocks caused by
stiffening when the compressed air flows through
them.
Precautions during installation
The installation must be carried out by qualified
personnel reporting to a qualified supervisor.
The power supply to the drier must be protected by
thermal fuses or relays as shown in this manual.
All the electric connections must be complying with
local regulations. The drier and its auxiliaries must
be earthed and protected from short-circuits and
overloads.
When the master switch is closed, the electric
voltage reaches can kill. Consequently, take every
precaution when working on the electric circuit.
Do not open the electric circuit access panels with
the equipment switched ON unless necessary for
tests, measurements or adjustments. This task must
only be carried out by qualified personnel, using the
appropriate equipment and protected from the
inherent dangers.
For a single-phase power supply, fit a neutral
conductor earthed in the transformer station
(system TN as stipulated in IEC 364 - HD 384 - IEC 64-
8) or by the electric power utility (TT system).
In systems with several dryers, install manual valves
so each machine can be isolated separately.
Fit a safety valve to each tank or appliance
containing air at a pressure higher than
atmospheric pressure. Fit a safety valve between
the compressor and the first by-pass valve.
If raised access platforms are installed around the
drier, take care that they do not impede use or
access for lifting or dismantling components.
Platforms and steps must be made from gratings or
tiled, and be equipped with safety handrails on all
open sides.
Precautions during operation
Dryers must only be operated by qualified
personnel reporting to a qualified supervisor.
If the temperature of pipework or any other parts
which could be touched accidentally by the
personnel during normal operation could exceed
60C° (140°F), they must be protected and insulated.
All air pipes must be painted or clearly marked as
stipulated in local safety regulations.
Do not remove or touch the safety devices,
protection or insulation fitted to the drier or its
auxiliaries.
Precautions for maintenance and repairs
Dryer maintenance, revision and repair must be
carried out by qualified personnel reporting to a
qualified supervisor.
When scrapping equipment, it must not pollute
conduits or rivers. Do not burn materials which
could pollute the air. Only use storage methods
which respect the environment.
Only use original spare parts supplied by the
equipment manufacturer.
Keep a log of all the interventions carried out on
the drier and its auxiliaries. The frequency and the
nature of the work completed during a given
period can reveal abnormal operating conditions
which require correction.
Only use the cooling gas specified on the machine
plate.
Check that all instructions relating to operation and
maintenance are respected and that the drier, the
auxiliaries and all safety devices are serviceable.
Always keep the drier clean. During maintenance
work, protect the components and plug the
openings exposed with clean rags, for example.
Never weld or carry out work which releases heat in
the vicinity of a system containing oil. Before
carrying out such operations, all components which
contain oil must be emptied and washed with
steam, for example.
To prevent operating temperature and pressure
rises, check and clean all heat exchanger surfaces
regularly, (for example, the condensing unit fins).
Schedule cleaning for each drier.
Take care not to jam the safety valves or other
pressure limitation devices with paint, oil, dirt, etc.
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