Air-to-water Heat Pump Split Versati
49
SPLIT
TYPE
21.3 Safety consideration
Checking for presence of refrigerant
The area shall be checked with an appropriate refrigerant detector prior to and during work, to ensure the
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used is suitable for use with all applicable refrigerants, i.e. non-sparking, adequately sealed or intrinsically safe.
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If any hot work is to be conducted on the refrigeration equipment or any associated parts, appropriate fire
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charging area.
Ventilated area
Ensure that the area is in the open or that it is adequately ventilated before breaking into the system or
conducting any hot work. A degree of ventilation shall continue during the period that the work is carried out. The
ventilation should safely disperse any released refrigerant and preferably expel it externally into the atmosphere.
Checks to the refrigeration equipment
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At all times the manufacturer s maintenance and service guidelines shall be followed. If in doubt, consult the
manufacturer s technical department for assistance.
Checks to electrical devices
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electrical components and wiring are exposed while charging, recovering or purging the system
Repairs to sealed components
During repairs to sealed components, all electrical supplies shall be disconnected from the equipment being
worked upon prior to any removal of sealed covers, etc. If it is absolutely necessary to have an electrical supply to
equipment during servicing, then a permanently operating form of leak detection shall be located at the most critical
point to warn of a potentially hazardous situation. Replacement parts shall be in accordance with the manufacturer
Repair to intrinsically safe components
Do not apply any permanent inductive or capacitance loads to the circuit without ensuring that this will not
exceed the permissible voltage and current permitted for the equipment in use. Replace components only with
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leak.
Cabling
Check that cabling will not be subject to wear, corrosion, excessive pressure, vibration, sharp edges or any other
adverse environmental effects. The check shall also take into account the effects of aging or continual vibration
from sources such as compressors or fans.
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Under no circumstances shall potential sources of ignition be used in the searching for or detection of refrigerant
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Leak detection methods
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shall be avoided as the chlorine may react with the refrigerant and corrode the copper pipe-work.
