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–EIMWC00803-21_01EN - 11/57
If refrigerant charge of the unit is more than 500 kg it is necessary to install gas sensor on water
circuit to catch an eventual gas leakage.
Verify that the unit has not zero pressure in the refrigerant circuit before charging water into the
heat exchangers. In case there is not pressure in the refrigerant circuit, do not charge water.
Do not use oxygen or a mixture of refrigerant and air to build up pressure as explosion can occur
causing serious personal injury.
1.1
Precautions against residual risks
1. Install the unit according to the instructions set out in this manual.
2. Regularly carry out all the maintenance operations foreseen in this manual .
3. Wear protective equipment (gloves, eye protection, hard hat, etc.) suited to the work in hand; do not wear clothes
or accessories that can get caught or sucked in by flows of air; tie back long hair before entering the unit .
4. Before opening the machine panelling make sure that it is firmly hinged to the machine.
5. The fins on heat exchangers and the edges of metal components and panels can cause cuts.
6. Do not remove the guards from mobile components while the unit is operating.
7. Make sure that mobile component guards are fitted correctly before restarting the unit.
8. Fans, motors and belts drives might be running: before entering, always wait for these to stop and take appropriate
measures to prevent them from starting up.
9. The surfaces of the machine and pipes can get very hot or cold and cause the risk of scalding .
10. Never exceed the maximum pressure limit (PS) of the water circuit of the unit.
11. Before removing parts on the pressurised water circuits, close the section of the piping concerned and drain the
fluid gradually to stabilise the pressure at the atmospheric level.
12. Do not use your hands to check possible refrigerant leaks.
13. Disable the unit from the mains using the main switch before opening the control panel .
14. Check that the unit has been grounded correctly before starting it.
15. Install the machine in a suitable area; in particular, do not install it outdoors if it is i ntended for use indoors.
16. Do not use cables with inadequate sections nor extension cord connections, even for very short periods or
emergencies.
17. For units with power correction capacitors, wait 5 minutes after removing the electric power supply before
accessing the inside of the switch board.
18. If the unit is equipped with compressors with integrated inverter, disconnect it from the mains and wait a minimum
of 20 minutes before accessing it to carry out maintenance: residual energy in the components, which tak es at
least this length of time to dissipate, poses the risk of electrocution.
19. The unit contains pressurised refrigerant gas: the pressurised equipment must not be touched except during
maintenance, which must be entrusted to qualified and authorised personnel.
20. Connect up the utilities to the unit following the indications set out in this manual and on the panelling of the unit
itself.
21. In order to avoid an environmental risk, make sure that any leaking fluid is collected in suitable devices in
accordance with local regulations.
22. If a part needs to be dismantled, make sure it is correctly re-assembled before starting the unit.
23. When the rules in force require the installation of fire-fighting systems near the machine, check that these are
suitable for extinguishing fires on electrical equipment and on the lubricating oil of the compressor and the
refrigerant, as specified on the safety data sheets of these fluids.
24. When the unit is equipped with devices for venting overpressure (safety valves): when these valves are triggered,
the refrigerant gas is released at a high temperature and speed; prevent the release of gas from harming people
or objects and, if necessary, discharge the gas according to the provisions of EN 378-3 and the local regulations
in force.
25. Keep all the safety devices in good working order and check them periodically according to the regulations in
force.
26. Keep all lubricants in suitably marked containers.
27. Do not store inflammable liquids near the unit.
28. Solder or braze only empty pipes after removing all traces of lubricant oil; do not use flames or other heat sources
in the vicinity of pipes containing refrigerant fluid.
29. Do not use naked flames near the unit.
30. The machinery must be installed in structures protected against atmospheric discharg e according to the
applicable laws and technical standards.
31. Do not bend or hit pipes containing pressurised fluids.
32. It is not permitted to walk or rest other objects on the machines.
33. The user is responsible for overall evaluation of the risk of fire in the place of installation (for example, calculation
of the fire load).
34. During transport, always secure the unit to the bed of the vehicle to prevent it from moving about and overturning .
35. The machine must be transported according to the regulations in force taking into account the characteristics of
the fluids in the machine and the description of these on the safety data sheet.
36. Inappropriate transport can cause damage to the machine and even leaking of the refrigerant fluid. Before start -
up, the machine must be checked for leaks and repaired accordingly.