25
RECOMMENDED PERIODIC MAINTENANCE INTERVENTIONS TO UNITS WITH CENTRIFUGAL COMPRESSORS
DESCRIPTION
FREQUENCY
6 months
12 months
other
GENERAL CHECKS
Check that the compressor is not damaged
•
Check that there are no excessive vibrations induced by other operating components
•
CHECKS ON ELECTRICAL PARTS
Check the power supply voltage
•
Check the proper fastening of the compressor power supply cables
•
Check the good condition of the electrical cables
•
Check that the electric current value (A) is that specifi ed in the technical plate
•
Check the voltage value (A) on the storage tank capacitors
•
Replace the storage tank condensers
every 5 years
Check the correct functioning of the safety system (alarms)
•
CHECKS ON ELECTRONIC PARTS
Check that all communication cables between the compressor and its components are
fi rmly fastened
•
Check that all electronic devices are fi rmly in their seat
•
Visually check that the electronic boards are have no burns or are damaged
•
Check that the reading of the pressure/temperature sensors is correct
CHECKS ON THE COOLING CIRCUIT PARTS
Check the proper functioning of the thermostatic valve
•
Check the charge of refrigerant gas
(1)
•
Check the proper functioning of the solenoid valves
•
MAINTENANCE - LIST OF THE RECOMMENDED PERIODIC INTERVENTIONS
DECOMMISSIONING AND DISPOSAL OF THE MACHINE COMPONENTS
ATTENTION
The unit contains greenhouse eff ect fl uoride gases covered by the
Kyoto Protocol. The law prohibits its dispersion in the environment and
requires its recovery and delivery to the dealer or collection centre.
When components are removed to be replaced or when the entire unit
reaches the end of its life and it must be removed from the installation,
in order to minimise the environmental impact, respect the following
disposal requirements:
- The refrigerant gas must be fully recovered in special containers and
brought to collection centres by specialised personnel having the
necessary qualifi cation;
- The lubricating oil in the compressors and cooling circuit must be
recovered and brought to collection centres;
- The structure, electric and electronic equipment and components
must be separated according to their type and construction material
and brought to collection centres;
- If the water circuit contains mixtures with anti-freeze, the content
must be collected and brought to collection centres;
- Observe the current national laws
