Introduction; Precautions Against Residual Risks - Daikin EWYT021CZI-A1 Installation And Maintenance Manual

1. INTRODUCTION

This appliance is intended to be used by expert or trained users in shops, in light industry and on farms, or for commercial
use by lay persons. The appliance shall not be accessible to the general public: it must be installed in a safety area,
protected from easy access.
This manual provides information on the standard functions and procedures of all units in the series, and it is an important
supporting document for qualified personnel but can never replace it.
All units are delivered with wiring diagrams, certified drawings, nameplate, and Declaration of Conformity. These
documents show all technical data for the unit you have bought. In case of any discrepancies between the contents of the
manual and the documentation provided with the unit, always rely on the unit because it is an integral part of this manual.
Read this manual carefully before installing and starting up the unit.
Improper installation could result in electric shock, short circuits, leaks, fire, or other damage to the equipment or injure to
people.
The unit must be installed by professional operators / technicians in compliance with the laws in force in the country of
installation.
The start-up of the unit must also be performed by authorized and trained personnel and all activities must be carried out
in full compliance with local laws and regulations.
INSTALLATION AND START UP ARE ABSOLUTELY FORBIDDEN IF ALL INSTRUCTIONS
CONTAINED IN THIS MANUAL ARE NOT CLEAR.
If you are unsure about assistance and for more information, contact an authorized representative of the manufacturer.
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, goggles, helmet, 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 panel, 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 stabilize 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; do not install it outdoors if it is intended 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 VFD, wait 10 minutes after removing the electric power supply before accessing the inside of the
switch board.
18. The unit contains pressurised refrigerant gas: the pressurised equipment must not be touched except during
maintenance, which must be entrusted to qualified and authorized personnel.
19. Connect the utilities to the unit following the indications set out in this manual and on the panels of the unit itself.
20. To avoid an environmental risk, make sure that any leaking fluid is collected in suitable devices in accordance with
local regulations.
21. If a part needs to be dismantled, make sure it is correctly reassembled before starting the unit.
22. When the rules in force require the installation of firefighting 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.
23. Keep all the safety devices in good working order and check them periodically according to the regulations in force.
24. Keep all lubricants in suitably marked containers.
25. Do not store inflammable liquids near the unit.
26. Solder or braze only empty pipes after removing all traces of lubricant oil; do not use flames or other heat sources
close to pipes containing refrigerant fluid.
27. Do not use naked flames near the unit.
28. The machinery must be installed in structures protected against atmospheric discharge according to the applicable
laws and technical standards.
29. Do not bend or hit pipes containing pressurised fluids.
30. It is not permitted to walk or rest other objects on the machines.
31. The user is responsible for overall evaluation of the risk of fire in the place of installation (for example, calculation
of the fire load).
D-EIMHP01505-22_00EN 5/59