7
Measures to be adopted if refrigerant gas leaks:
- R134a
First aid measures
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General information:
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do not administer anything to an unconscious person.
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Inhalation:
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transfer outdoors.
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use oxygen or artificial respiration if needed.
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do not administer adrenaline or similar drugs.
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Contact with eyes:
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rinse thoroughly with plenty of water for at least 15 minutes and consult a doctor.
•
Contact with skin:
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wash immediately with plenty of water
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immediately remove all contaminated clothing
Measures in the event of accidental spillage
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Personal precautions:
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Move all personnel to safe areas.
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Provide adequate ventilation.
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Use personal protective equipment.
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Environmental precautions:
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Intercept the emission.
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Cleaning methods:
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Use absorbent products.
Operations with removed panels
Some of the operations and/or tests described below require the removal of the panels to access
inside the unit.
There may be hot surfaces (piping, compressor, etc.) or cold (compressor, intake separator, etc.),
sharp edges (coil fins) or moving parts (fans) even with the machine stationary.
The power supply must be disconnected before removing any panel.
Operations that require the panels to be opened must only be carried out by qualified
personnel wearing personal protective equipment.
1.11
User guidelines
1.12
Machine description
1.12.1
Features
Frame.
Self-supporting galvanized steel frame further protected with polyester powder painting. Easy to
remove panels allow access to the inside of the unit for maintenance and other necessary
operations.
Compressors.
Scroll with oil sight glass. They are fitted with internal overheat protection and crankcase heater.
They are installed on rubber shock absorbers.
Condenser.
AISI 316 stainless steel braze welded plate type, with one circuit on the refrigerant side and one
on the water side in 162-P - 602-P models; with two independent circuits on the refrigerant
side and one on the water side in 804-P- 1204-P models, complete with water differential
pressure switch.
Evaporator.
AISI 316 stainless steel braze welded plate type, with one circuit on the refrigerant side and one
on the water side in 162-P- 602-P models; with two independent circuits on the refrigerant side
and one on the water side in 804-P- 1204-P models, complete with water differential pressure
switch.
Electrical board.
It includes main switch with door safety interlock; fuses; thermal relays for compressors
protection; interface relays; electrical terminals for external connections.
Microprocessor
For automatic control of the unit, allowing continuous display of the operational status of the
unit, control set and real water temperature and, in case of partial or total block of the unit,
indication of security device that intervened.
Cooling circuit
Made of copper pipe, it includes the following components on all models: electronic thermostatic
expansion valve; filter drier; liquid and humidity indicator; high and low pressure switches (with
fixed setting); safety valve; check valves.
User side water circuit
It includes condenser; temperature sensors; water differential pressure switch.
Source side water circuit
It includes evaporator; temperature sensors; water differential pressure switch.
•
Keep this manual together with the wiring diagram in a place that is accessible by the
operator.
•
Take note of the unit identification data so as to provide them to the service centre when
required (see the "Machine identification" paragraph).
•
It is recommended to keep track of the operations carried out on the unit, so as to facilitate any
troubleshooting.
•
In case of a fault or malfunction:
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verify the type of alarm to notify the service centre;
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immediately disable the unit without resetting the alarm;
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contact an authorised service centre;
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request original spare parts.
•
Request the installer to be trained on:
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switching on/shut-down;
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shutting down for long periods;
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maintenance;
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what to do/not to do in case of a fault.