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Idiomas disponibles
Idiomas disponibles
15 REPLACEMENT OF SAFETY VALVE (Only for 12~16kW units)
Visual inspection is needed after that period, maintenance people should check the appearance of the valve body and the
operating environment. If the valve body is not obvious corrosion, cracks, dirt, damage, then the valve can be used continually.
Otherwise, please contact your supplier for spare part.
Safety Valve
Replace the safety valve as follows (Suitable for type with safety valve):
1) Reclaim the refrigerant completely in the system. Doing so requires professional staff and equipment;
2) Note to protect the tank coating. Avoid damage to coating from external force or high temperature when removing and
installing the safety valve;
3) Heat the sealant to screw off the safety valve. Note to protect the area where the screwing tool meets the tank body and avoid
damages to the tank coating;
4) If tank coating is damaged, repaint the damaged area.
16 INFORMATION SERVICING
1) Checks to the area
Prior to beginning work on systems containing flammable refrigerants, safety checks are necessary to ensure that the risk of
ignition is minmised. For repair to the refrigerating system, the following precautions shall be complied with prior to conducting
work on the system.
2) Work procedure
Works 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.
3) General work area
All mintenance staff and others working in the local area shall be instructed on the nature of work being carried out. work in
confined 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 flammable material.
4) Checking for presence of refrigerant
The area shall be checked with an appropriate refrigerant detector prior to and during work, to ensure the technician is aware
of potentially flammable atmospheres. Ensure that the leak detection equipment being used is suitable for use with flammable
refrigerants, i.e. no sparking, adequately sealed or intrinsically safe.
5) Presence of fire extinguisher
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 power or CO
2
fire extinguisher adjacent to the charging area.
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 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.
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