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Owner's Manual

01.04. Appendix

WARNING

The following applies to R-32 refrigerant systems.

• Prior to beginning work on systems containing flammable refrigerants, safety checks are necessary to ensure that the

risk of ignition is minimized.

• For repair to the refrigerating system, the following precautions shall be complied with prior to conducting work on

the system.

• Work shall be undertaken under a controlled procedure so as to minimise the risk of a flammable gas or vapour being

present while the work is being performed.

• All maintenance staff and others working in the local area shall be instructed on the nature of work being carried

out. Work in confined spaces shall be avoided. The area around the workspace shall be sectioned off. Ensure that the

conditions within the area have been made safe by control of flammable material.

• Ensure that the leak detection equipment being used is suitable for use with flammable refrigerants, i.e. non-sparking,

adequately sealed or intrinsically safe.

• If any hot work is to be conducted on the refrigeration equipment or any associated parts, appropriate fire

extinguishing equipment shall be available to hand. Have a dry powder or CO2 fire extinguisher adjacent to the

charging area.

• No person carrying out work in relation to a refrigeration system which involves exposing any pipe work that contains

or has contained flammable refrigerant shall use any sources of ignition in such a manner that it may lead to the risk of

fire or explosion.

• All possible ignition sources, including cigarette smoking, should be kept sufficiently far away from the site of

installation, repairing, removing and disposal, during which flammable refrigerant can possibly be released to the

surrounding space.

• Prior to work taking place, the area around the equipment is to be surveyed to make sure that there are no flammable

hazards or ignition risks. "No Smoking" signs shall be displayed.

• 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.

• Where electrical components are being changed, they shall be fit for the purpose and to the correct specification.

At all times the manufacturer's maintenance and service guidelines shall be followed. If in doubt consult the

manufacturer's technical department for assistance.

• The following checks shall be applied to installations using flammable refrigerants:

1. the charge size is in accordance with the room size within which the refrigerant containing parts are installed;

2. the ventilation machinery and outlets are operating adequately and are not obstructed;

3. if an indirect refrigerating circuit is being used, the secondary circuit shall be checked for the presence of

refrigerant; which may corrode refrigerant containing components, unless the components are constructed of

materials which are inherently resistant to being corroded or are suitably protected against being so corroded.

• Repair and maintenance to electrical components shall include initial safety checks and component inspection

procedures.

• Initial safety checks shall include:

1. that capacitors are discharged: this shall be done in a safe manner to avoid possibility of sparking;

2. that no live electrical components and wiring are exposed whiule charging, recovering or purging the system;

3. that there is continuity of earth bonding.

• 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.

Owner's Manual ECOFLEX MINI VRF R-32 SERIES - 1 WAY CASSETTE

Doc. No.9590-4028-02 Ver. 1 230819

ECOFLEX MINI VRF R-32 SERIES