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Idiomas disponibles
NOTE: Cooling air capacity will vary according to temperature and
humidity of the room.
Frequency band(s) in which the radio equipment operates:
2400MHz-2483.5MHz
Maximum radio-frequency power transmitted in the frequency
band(s) in which the radio equipment operates: 20dBm
12. VENTING KIT ACCESSORIES
If the unit is to be used exclusively in one space, the cooling efficien-
cy will be enhanced by using the following venting kit accessories.
USING EXHAUST DUCT SET (Fig. H)
1.
Prepare the below accessory.
H1 Exhaust duct hose adapter nozzle (Fix to unit)
H2 Exhaust duct hose
H3 Exhaust nozzle (upper) + Exhaust nozzle (lower)
2.
To fix the Exhaust nozzle (upper) and the Exhaust nozzle (low-
er) together, press the clasp forcibly into the groove. (Fig. H4)
3.
Insert one end of exhaust duct hose (flexible tube) (H2) into
exhaust duct hose adapter nozzle (H1) by turning it counter
clockwise. And install exhaust nozzle (upper + lower) (H3) into
another side of exhaust duct hose. (Fig. H5)
4.
Face the side with "TOP" upwards. Insert exhaust duct hose
adapter nozzle into the groove of exhaust outlet until you hear
a sound. (Fig. H6)
5.
Place the exhaust hose outdoors. (Fig. H7)
NOTE:
Place the unit as close as possible to the window or
door. (H5, H6, H7)
13. Specialist's Manual
Aptitude requirement for maintenance man(repairs should be do-
ne only be specialists).
a. All the work men who are engaging in the refrigeration system
should bear the valid certification awarded by the authoritative
organization and the qualification for dealing with the refrigera-
tion system recognized by this industry.
b. It can only be repaired by the method suggested by the equip-
ment's manufacturer.
If it needs other technician to maintain and repair the appliance,
they should be supervised by the person who bears the qualifi-
cation for using the flammable refrigerant.
Safety preparation work before installation
The safety must be inspected before maintaining the appliances
with the flammable refrigerant for reducing the flammable hazard
to the lowest.
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.
Detection of flammable refrigerants
Under no circumstances shall potential sources of ignition be used
in the searching for or detection of refrigerant leaks. A halide torch
(or any other detector using a naked flame) shall not be used.
Environment checking
• 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 work-
space shall be sectioned off. Ensure that the conditions within
the area have been made safe by control of flammable material.
• The area shall be checked with an appropriate refrigerant detec-
tor prior to and during work, to ensure the technician is aware of
potentially toxic or flammable atmospheres.
Ensure that the leak detection equipment being used is suitable
for use with all applicable refrigerants, i.e. non-sparking, ade-
quately sealed or intrinsically safe.
• No person carrying out work in relation to a refrigeration system
which involves exposing any pipe work 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 in-
stallation, repairing, removing and disposal, during which refrig-
erant 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.
• If any hot work is to be conducted on the refrigeration equip-
ment or any associated parts, appropriate fire extinguishing
equipment shall be available to hand. Have a dry powder or CO
fire extinguisher adjacent to the charging area.
• Ensure that the area is in the open or that it is adequately venti-
lated 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 dis-
perse any released refrigerant and preferably expel it externally
into the atmosphere.
Refrigeration equipment Checking
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 fol-
lowed. If in doubt, consult the manufacturer's technical department
for assistance.
The following checks shall be applied to installations using flam-
mable refrigerants:
• The actual refrigerant charge is in accordance with the room size
within which the refrigerant containing parts are installed;
• The ventilation machinery and outlets are operating adequately
and are not obstructed;
• If an indirect refrigerating circuit is being used, the secondary
circuit shall be checked for the presence of refrigerant;
• Marking to the equipment continues to be visible and legible.
Markings and signs that are illegible shall be corrected;
• Refrigeration pipe or components are installed in a position
where they are unlikely to be exposed to any substance 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 be-
ing so corroded.
Electrical devices checking
Repair and maintenance to electrical components shall include ini-
tial safety checks and component inspection procedures. If a fault
exists that could compromise safety, then no electrical supply shall
be connected to the circuit until it is satisfactorily dealt with. If the
fault cannot be corrected immediately but it is necessary to contin-
ue operation, an adequate temporary solution shall be used. This
shall be reported to the owner of the equipment so all parties are
advised.
Initial safety checks shall include:
• That capacitors are discharged: this shall be done in a safe man-
ner to avoid possibility of sparking;
• That no live electrical components and wiring are exposed while
charging, recovering or purging the system;
• That there is continuity of earth bonding.
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.
Particular attention shall be paid to the following to ensure that by
working on electrical components, the casing is not altered in such
a way that the level of protection is affected.
This shall include damage to cables, excessive number of connec-
tions, terminals not made to original specification, damage to
seals, incorrect fitting of glands, etc.
• Ensure that the apparatus is mounted securely.
• Ensure that seals or sealing materials have not degraded to the
point that they no longer serve the purpose of preventing the in-
gress of flammable atmospheres. Replacement parts shall be in
accordance with the manufacturer's specifications.
NOTE : The use of silicon sealant can inhibit the effectiveness of some
types of leak detection equipment. Intrinsically safe compo-
nents do not have to be isolated prior to working on them.
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.
Leak detection methods
The following leak detection methods are deemed acceptable for
all refrigerant systems.
Electronic leak detectors may be used to detect refrigerant leaks
but, in the case of flammable refrigerants, the sensitivity may not
be adequate, or may need re-calibration.
(Detection equipment shall be calibrated in a refrigerant-free area.)
Ensure that the detector is not a potential source of ignition and is
2
suitable for the refrigerant used.
Leak detection equipment shall be set at a percentage of the LFL
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