'操作说明 Hotflow THREE_26_zh.pdf - 第467页
1. FOR YOUR SAFETY ENGLISH T ranslation of the original 10 451820.66.03_EN 2020-05-05 1.7 Safety requirements for operating cooling units within the European Union The following information applies for cooling units oper…
Translation of the original ENGLISH 1. FOR YOUR SAFETY
451820.66.03_EN
2020-05-05
9
1.5 Safety notes
The following regulations and safety notes must be complied with when installing, operating and
carrying out maintenance work on the cooling unit:
• Work on the cooling unit must only be performed by qualified personnel.
• The accident prevention regulations must be complied with.
• Never stand under the load when lifting and lowering the cooling unit – remain outside
the danger zone.
• The cooling unit must be secured to prevent the risk of tipping.
• The product must not be used without the safety features.
• When connecting the cooling unit to the electrical power supply, the relevant VDE, EN
and IEC standards must be observed/fulfilled. The technical connection requirements
of the electrical utility companies also apply.
• Always disconnect the power supply before carrying out any work on the cooling unit.
• National regulations in the country of installation must be complied with.
• The closed refrigerant circuit contains refrigerant and refrigeration machine oil. These
substances must be disposed of professionally when carrying out maintenance and
when decommissioning.
• The cooling water additives are caustic on contact with eyes and skin. Wear protective
goggles and gloves when working with cooling water additives. Follow the instructions
on the product packaging.
• Personal protective equipment regulations must be followed when working on the
refrigerant circuit.
• The cooling unit must only be used for cooling water in accordance with the relevant
specification.
1.6 Handling refrigerant
The legal regulations and directives must be followed when handling refrigerant. Refrigerant
must only be handled by qualified personnel.
Protective goggles and gloves must be worn!
The operator of the cooling unit is responsible for ensuring that refrigerant and system components
that are no longer suitable for use are disposed of correctly.
1. FOR YOUR SAFETY ENGLISH Translation of the original
10
451820.66.03_EN
2020-05-05
1.7 Safety requirements
for operating cooling units within the European Union
The following information applies for cooling units operated within the European Community that
feature a closed refrigerant circuit. Further requirements may apply in some member states
(e.g. due to environmental policy).
The cooling units contain components with operating pressures that require compliance with the
Pressure Equipment Directive and EN 378.
In addition to the manufacturer requirements regarding the design, equipment and testing of the
cooling unit prior to delivery, the operator of this type of system also has additional obligations in
accordance with the standard EN 378 or other nationally valid regulations. These apply to
installing, operating and retesting cooling units.
1.7.1 Installation
When installing the cooling unit in basement floors or upper floors of a building without sufficient
emergency routes, requirements are placed on the installation location for the protection of persons
in accordance with EN 378.
With regard to the existing refrigerant and the refrigerant fill quantity (see type plate) of the cooling
unit, a specific minimum room volume must be maintained.
It is thereby ensured that a refrigerant leakage in the event of an accident and resulting oxygen
displacement will not have any effect on human health.
Formula:
Min. room volume [m³] = refrigerant fill quantity [kg] / practical limit value [kg/m³]
Example calculation (refrigerant fill quantity)
Translation of the original ENGLISH 1. FOR YOUR SAFETY
451820.66.03_EN
2020-05-05
11
The room size and air volume flow required as a result of the necessary heat dissipation dur-
ing operation are not taken into account in the above table!
Chapters 5.1 and 5.2 must be observed to ensure fault-free operation!
1.7.2 Operation
The owner or operator of the cooling unit is obliged to define measures for emergencies
(accidents and diagnoses). The operator must draw up quick reference instructions based on the
existing operating instructions and make them available to employees.
The quick reference instructions must be clearly displayed in the immediate area of the cooling unit.
(See "Sample quick reference instructions" in appendix)
The owner or operator is obliged to keep a system log for the cooling unit.
The system log must either be kept close to the cooling unit or, if the information is saved on a
computer of the owner or operator , a print-out must be kept close to the cooling unit. The information
must be made available to trained personnel during repair work or retesting.
(See "Sample system log" in appendix)
1.7.3 Regular leakage checks
The operator is obliged to subject the cooling unit to regular leakage checks.
(See chapter 13 "Operator duties")
1.7.4 Retesting
Regular tests (retesting) carried out by qualified personnel are specified for the cooling units based
on EN 378 to ensure compliance with the minimum requirements for health and safety.
The operator is responsible for carrying out the retesting.
(See chapter 13 "Operator duties")