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Read Safety Precautions Before Operation and Installation
Incorrect installation due to ignoring instructions can cause serious damage or injury.
Safety Precautions
13. When a FLAMMABLE REFRIGERANT is used, the requirements for installation space of
appliance and /or ventilation requirements are determined according to
-- the mass charge amount(M) used in the appliance,
--the installation location,
--the type of ventilation of the location or of the appliance.
WARNING
1.
Installation (Space)
- That the installation of pipe-work shall be kept to a minimum.
- That pipe-work shall be protected from physical damage.
- Where refrigerant pipes shall be compliance with national gas regulations.
- That mechanical connections shall be accessible for maintenance purposes.
- In cases that require mechanical ventilation, ventilation openings shall be kept clear of obstruction.
- When disposing of the product is used, be based on national regulations, properly processed.
2. Servicing
- Any person who is involved with working on or breaking into a refrigerant circuit should
hold a current valid certificate from an industry-accredited assessment authority, which
authorises their competence to handle refrigerants safely in accordance with an industry
recognised assessment specification.
3. Maintenance and repair requiring the assistance of other skilled personnel shall be carried
out under the supervision of the person competent in the use of flammable refrigerants.
4. Do not use means to accelerate the defrosting process or to clean, other than those
recommended by the manufacturer.
5. The appliance shall be stored in a room without continuously operating ignition sources
(for example: open flames,an operating gas appliance or an operating electric heater)
6. Be more careful that foreign matter(oil, water,etc) does not enter the piping. Also, when
storing the piping, securely seal the opening by pinching, taping, etc.
7. Do not pierce or burn.
8.
Be aware that refrigerants may not contain an odour.
9.
All working procedure that affects safety means shall only be carried by competent
persons.
10.
Appliance shall be stored in a well -ventilated area where the room size corresponds to
the room area as specifiec for operation.
11. The appliance shall be stored so as to prevent mechanical damage from occurring.
12. Joints shall be tested with detection equipment with a capability of 5 g/year of refrigerant
or better, with the equipment in standstill and under operation or under a pressure of at
least these standstill or operation conditions after installation. Detachable joints shall NOT
be used in the indoor side of the unit(brazed, welded joint could be used).
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1. Checks to the area
3. General work area
4. Checking for presence of refrigerant
5. Presence of re extinguisher
If any hot work is to be conducted on the refrigeration equipment or any associated parts, appropriate
re extinguishing equipment shall be available to hand. Have a dry power or CO2 re extinguisher
adjacent to the charging area.
7. Ventilated area
Ensure that the area is in the open or that it it 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.
8. Checks to the refrigeration equipment
Where electrical components are being changed, they shall be t for the purpose and to the correct
specication. 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 ammable refrigerants:
6. No ignition sources
No person carrying out work in relation to a refrigeration system which involves exposing any pipe
work that contains or has contained ammable refrigerant shall use any sources of ignition in such a
manner that it may lead to the risk of re or explosion. All possible ignition sources, including cigarette
smoking, should be kept sufciently far away from the site of installation, repairing, removing and
disposal, during which ammable 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 ammable hazards or ignition risks. NO SMOKING signs shall be displayed.
2. Work procedure
All mintenance staff and others working in the local area shall be instructed on the nature of work
being carried out. work in conned sapces shall be avoided. The area around the work space shall
be sectioned off. Ensure that the conditions within the area have been made safe by control of
ammable material.
Prior to beginning work on systems containing ammable refrigerants, safety checks are necessary
to ensure that the risk of ignition is minimised. For repair to the refrigerating system, the following
precautions shall be complied with prior to conducting work on the system.
Works shall be undertaken under a controlled procedure so as to minimise the risk of a
ammable gas or vapour being present while the work is being performed.
The area shall be checked with an appropriate refrigerant detector prior to and during work,
to ensure the technician is aware of potentially ammable atmospheres. Ensure that the leak
detection equipment being used is suitable for use with ammable refrigerants, i.e. no sparking,
adequately sealed or intrinsically safe.
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Information Servicing
(Required for the units adopt R32/R290 Refrigerant only)
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