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© STULZ S.p.A. – all rights reserved EN/06.2016/i09
WSA ExplOrEr OriginAl inStructiOnS
1.3.3 Safety instructions
inFOrMAtiOn
This cooling unit contains fluorinated greenhouse gas covered by the Kyoto protocol
In these STULZ chillers the refrigerant R134a is used. Refrigerants are volatile or highly volatile
fluorinated hydrocarbons which are liquefied under pressure. They are incombustible and not
hazardous to health when used as intended.
DAngEr
• Works have to be carried out by competent staff only
• Observance of the regulations for accident prevention
• Stay out of danger when lifting and setting off the unit
• Secure the unit to avoid the risk of overturning
• Safety devices may not be bypassed
• Respect the corresponding EN- and IEC standards for the electrical connection of the unit
and observe the conditions of the power supply companies
• Switch off the voltage from the unit when working on it
• The unit must be earthed
WArning
• The unit may only be used to cool water according to the Stulz specification.
• Observe the national regulations of the country where the unit will be installed
• The refrigerant circuit contains refrigerant and refrigerating plant oil, observe professional
disposal for maintenance and when setting the unit out of service
• Cooling water additives have an acidic effect on skin and eyes, wear safety glasses and
safety gloves
• Observe personal protective equipment when working on the refrigerant circuit
inFOrMAtiOn
• Respect material compatibility in the whole hydraulic circuit
• The male triangular wrench is to be placed in a visible location in the immediate vicinity of
the unit
1.3.4 Handling refrigerants
According to EN 378, refrigerants are divided in groups in respect of health and safety.
• Adherence to the regulations by law and guide-lines
• Execution only by competent staff
• Responsibility for correct disposal of refrigerant and system parts is incumbent on the
operator
• Refrigerants have a narcotic effect when inhaled in high concentrations.
• The room is to be evacuated immediately if high concentrations of refrigerant suddenly occur.
The room may only be entered again after adequate ventilation.
