Mars Comfort-Aire RG Series User manual

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Owner’s Manual
RG/RADS Series
Window Type Room Air Conditioner
RG-51Q
RADS-51Q
RADS-61Q
RADS-81Q
RADS-101Q
RADS-121Q
RADS-151Q
RADS-183Q
RADS-253Q
RADS-283Q
RADS-61R
RADS-81R
RADS-101R
RADS-121R
RADS-151R
RADS-183S
RADS-253S
RAD-283S
REG-183R
REG-253R

Owner’s Manual - RG/RADS Series
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Table of Contents
Important Safety Instructions ...................................................03
Installation Instructions..............................................................12
Normal Sounds............................................................................26
Air Conditioner Features............................................................27
Care and Cleaning.......................................................................32
Troubleshooting Tips..................................................................33

Owner’s Manual - RG/RADS Series
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IMPORTANT SAFETY INSTRUCTIONS
Inside you will find many helpful hints on how to use and maintain your air conditioner
properly. Just a little preventive care on your part can save you a great deal of time
and money over the life of your air conditioner. You'll find many answers to common
problems in the chart of troubleshooting tips. If you review our chart of Troubleshooting
Tips first, you may not need to call for service at all.
To prevent injury to the user or other people and property damage, the following
instructions must be followed. Incorrect operation due to ignoring of instructions may
cause harm or damage. The seriousness is classified by the following indications.
This symbol indicates the possibility of death or serious injury.
Always do this.
Never do this.
CAUTION
This symbol indicates the possibility of injury or damage to property.
WARNING
WARNING
Plug in power plug
properly.
Do not modify power cord length or share the
outlet with other appliances.
Always ensure effective
grounding.
Unplug the unit if strange
sounds, smell, or smoke
comes from it.
Keep firearms away.
Ventilate room before operating air conditioner if there is
a gas leakage from another appliance.
Otherwise, it may cause electric
shock or fire due to excess heat
generation.
It may cause electric shock or fire due to heat generation.
Incorrect grounding may cause
electric shock.
It may cause fire and electric
shock.
It may cause fire.
It may cause explosion, fire and, burns.
It may cause electric shock or fire
due to heat generation.
It may cause electric shock.
It may cause failure of machine
or electric shock.
It may cause fire and electric
shock.
It may cause fire and electric
shock.
It may cause electric shock or fire.
If the power cord is damaged, it must be replaced by
the manufacturer or an authori••ed service cent• ••• or a
similarly qualified person in order to avoid a hazard.
This could damage your health.
Incorrect installation may cause
fire and electric shock.
It may cause electric shock.
It may cause an explosion or fire.
It may cause failure and electric shock.
Do not operate or stop the
unit by inserting or pulling
out the power plug.
Do not operate with wet
hands or in damp
environment.
Do not allow water to run
into electric parts.
Do not use the socket if it is
loose or damaged.
Do not use the power cord
close to heating appliances.
Do not damage or use an unspecified power
cord.
Do not direct airflow at room occupants.
Always install • •••circuit
breaker and a dedicated••
power circuit.
Do not open the unit during operation.
Do not use the power cord near flammable gas
or combustibles, such as gasoline, benzene,
thinner, etc.
Do not disassemble or modify unit.
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READ THIS MANUAL
manufacturer or an authorized service center or a similarly
qualied person in order to avoid hazard.
Always install a circuit
breaker and a dedicated
power circuit.

Owner’s Manual - RG/RADS Series
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When the air filter is to be
removed, do not touch the metal
parts of the unit.
It may cause an injury.
Do not clean unit when power is on
as it may c ause fi re an d el ectric sh ock,
it may cause an injury.
Operation with windows opened
may cause wetting of indoor and
soaking of household furniture.
When the unit is to be cleaned,
switch off, and turn off the circuit
breaker.
Use caution when unpacking and
installing. Sharp edges could cause injury.
Do not clean the air conditioner
with water.
Water may enter the unit and
degrade the insulation. It may
cause an electric shock.
This could injure the pet or plant.
It may cause electric shock and
damage.
Do not put a pet or house plant
where it will be exposed to direct
air flow.
Ventilate the room well when
used together with a stove, etc.
An oxygen shortage may occur.
Do not use this air conditioner to
preserve precision devices, food,
pets, plants, and art objects.It may
cause deterioration of quality, etc.
It may cause failure of product or
fire.
Do not use for special purposes.
If water enters the unit, turn the unit off at the power
outlet and switch off the circuit breaker. Isolate
supply by taking the power-plug out and contact a
qualified service technician.
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It may cause failure of appliance
or accident.
Appearance may be deteriorated
due to change of product color or
scratching of its surface.
If bracket is damaged, there is
concern of damage due to falling
of unit.
There is danger of fire or electric
shock.
Operation without filters may••
cause failure.
It contains contaminants and
could make you sick.
Stop operation and close the
window in storm or hurricane.
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Do not use strong detergent
such as wax or thinner but use
a soft cloth.
Ensure that the installation bracket of the
outdoor appliance is not damaged due
to prolonged exposure.
Hold the plug by the head of the
power plug when taking it out.
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Turn off the main power
switch when not using the
unit for a long time.
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Always insert the filters securely.
Clean filter once every t wo w eeks.
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Do not place heavy object on the power
cord and ensure that the cord is not
compressed.
Do not drink water drained
from air conditioner.
This appliance is not intended for use by persons
(including children) with reduced physical ,sensory
or mental capabilities or lack of experience and
knowledge, unless••they••• • • • •• • • • •••••••••••given••supervision••
or instruction concerning use of the appliance by a
person responsible for their safety.
Children should be supervised to ensure that they
do not play with the appliance.
If the supply cord is damaged, it must be replaced
by the manufacturer, its service agent or similarly
qualified persons in order to avoid a hazard.
CAUTION
CAUTION
Do not place obstacles around
air-inlets or inside of air-outlet.
The appliance shall be installed in accordance
with national wiring regulations.
Do not operate your air conditioner in a wet room
such as a bathroom or laundry room.
The appliance with electric heater shall have at
least •• •• • •••••••s pace••to the••••co mbustible••materials.••
Contact••the authori••ed service technician for••
repair or maintenance of this unit.
Contact the authori••ed installer for installation••of
this unit.
IMPORTANT SAFETY INSTRUCTIONS
knowledge, unless they have been given supervision
or instruction concerning use of the appliance by a
person responsible for their safety.
The appliance with electric heater shall have at least
3 feet space to the combustible materials.
Contact an authorized service technician for repair or
maintenance of this unit.
Contact the authorized installer for installation of this
unit.

Owner’s Manual - RG/RADS Series
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The power supply cord with this air
conditioner contains a current detection
device designed to reduce the risk of
re. Please refer to the section Operation
of Current Device for details. In the
event that the power supply cord is
damaged, it cannot be repaired- it must
be replaced with a cord from the Product
Manufacturer.
Prevent Accidents
To reduce the risk of re, electrical shock, or injury to persons when using your air
conditioner, follow basic precautions, including the following:
• Be sure the electrical service is adequate for the model you have chosen. This
information can be found on the serial plate, which is located on the side of the
cabinet and behind the grille.
• If the air conditioner is to be installed in a window, you will probably want to clean
both sides of the glass rst. If the window is a triple-track type with a screen panel
included, remove the screen completely before installation.
• Be sure the air conditioner has been securely and correctly installed according to the
installation instructions in this manual. Save this manual for possible future use when
removing or installing this unit.
• When handling the air conditioner, be careful to avoid cuts from sharp metal ns on
front and rear coils.
IMPORTANT SAFETY INSTRUCTIONS
WARNING
WARNING
WARNING
NOTE
NOTE
Operation of Current Device
(Applicable to the unit with current detection
device only)
WARNING
For Your Safety
Do not store or use gasoline or other ammable vapors and liquids in the vicinity
of this or any other appliance.
Avoid re hazard or electric shock. Do not use
an extension cord or an adapter plug. Do not
remove any prong from the power cord.
Grounding type wall
receptacle
Electrical Information
The complete electrical rating of your new room air conditioner is stated on the serial plate.
Refer to the rating when checking the electrical requirements.
• Be sure the air conditioner is properly grounded. To minimize shock and re hazards,
proper grounding is important. The power cord is equipped with a three-prong
grounding plug for protection against shock hazards.
• Your air conditioner must be used in a properly grounded wall receptacle. If the wall
receptacle you intend to use is not adequately grounded or protected by a time delay
fuse or circuit breaker, have a qualied electrician install the proper receptacle. Ensure
the receptacle is accessible after the unit installation.
• Do not run air conditioner without the side protective cover in place. This could result
in mechanical damage within the air conditioner.
• Do not use an extension cord or an adapter plug.
The power supply cord contains a current device that
senses damage to the power cord. To test your power
supply cord do the following:
1. Plug in the air conditioner.
2. The power supply cord will have TWO buttons on
the plug head. Press the TEST button, you will
notice a click as the RESET button pops out.
3. Press the RESET button, again you will notice a
click as the button engages.
4. The power supply cord is not supplying electricity
to the unit. (On some products this it also indicated
by a light on the plug head.)
• Do not use this device to turn the unit on or o󰀨.
• Always make sure the RESET button is pushed in for current
operation.
• The power supply must be replaced if it fails reset when either
the TEST button is pushed, of it cannot be reset. A new one
can be obtained from the product manufacturer.
• If power supply cord is damaged, it cannot be repaired.
It MUST be replaced by one obtained from the product
manufacturer.
NOTE: This air conditioner is designed to be operated under
conditions as follows:
Cooling
Operation
Outdoor temp:
64-109°F/18-43°C
(64-125°F/18-52°C for special
tropical models)
Indoor temp: 62-90°F/17-32°C
Heating
Operation
Outdoor temp: 23-76°F/-5-24°C
Indoor temp: 32-80°F/0-27°C
Note: Performance may be reduced outside of these
operating temperatures.

Owner’s Manual - RG/RADS Series
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IMPORTANT SAFETY INSTRUCTIONS
-Do not use means to accelerate the de frosting process or t o cl ean, o t her than those
recommended by the manufacturer.
-The appliance sh all b e st ored i n a ro om w ithout continuously op erating i gnition
sources (for ex ample: o pen flames, an op erating g as ap pliance) a nd ig nition s ources••or
(for example:an op erating electric he ater) cl ose to th e appliance.
-Do not pierce or bu rn.
-Be aware th at the re frigerants may n ot co ntain an od or.
-Compliance with n ational gas regulations sh all b e ob served.
-Keep ventilation op enings c lear of obstruction.
-The appliance sh all b e st ored s o as to p revent mechanical damage fr om o ccurring.
-••he appliance sh all b e st ored i n a well-ventilated ar ea w here t he ro om
size corresponds to the ro om area as specified fo r operation.
-Any person who is i nvolved with working on o r br eaking into a re frigerant c ircuit sh ould
hold a current va lid c ertificate fr om an industry-accredited assessment au thority, which
authori••es their competence to ha ndle refrigerants sa fely in accordance with an
industry recogni••ed as sessment s pecification.
-Servicing shall on ly b e performed as re commended by the eq uipment m anufacturer.
Maintenance and re pair r equiring th e a ssistance of o ther sk illed personnel shall b e
carried out un der t he su pervision of the p erson co mpetent i n the use of flammable r e
frigerants.
-DO NOT m odify the le ngth of the po wer c ord or use a n extension cord to p ower the unit.
DO NOT s h are a single ou tlet w ith other el ectrical appliances. I mproper power su pply
can cause fire or electrical shock.
-Please follow th e i nstruction ca refully to handle, i nstall, cl ear, s ervice th e a ir
conditioner to avoid any damage or ha zard. F lammable Refrigerant R 32 is u sed within
air conditioner. When maintaining or disposing th e a ir conditioner, th e refrigerant (R 32
or R290) shall be r ecovered pr operly, sh all n ot di scharge t o air directly.
-No open fire or device which may ge nerate s park/arcing sh all b e
around air conditioner to avoid causing ig nition o f th e flammable re frigerant u sed.
Please follow th e i nstruction•• ca refully to store or maintain th e a ir co nditioner to prevent••
mechanical damage fr om occurring.
-Flammable refrigerant -R 32 is us ed in •• •• ••••••air conditioner. Please fo llow t h e instruction••
carefully to av oid any hazard.
WARNING: (for using R290/R32 refrigerant only)
Caution: Risk of fire/
flammable materials
(Required for R32/R290 units only)
IMPORTANT NOTE:Read this manual
carefully before installing or operating
your new air conditioning unit. Make sure
to save this manual for future reference.
AVERTISSEMENT
Ne pas utiliser de produits permettant d acc l rer le d gel ou de produits de nettoyage
autres que ceux recommand s par le fabricant.
L appareil doit tre entrepos dans un endroit sans source d allumage fonctionnant
en continu (par exemple : flamme nue, appareil au gaz en marche ou radiateur lectrique
en marche).
Ne pas percer ni bruler.
Attention : les frigorig nes peuvent tre inodores.
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• Do not use means to accelerate the defrosting process or to clean, other than those reccommended
by the manufacturer.
• The appliance shall be stored in a room without continuously operating ignition sources (for example:
open ames, an operating gas appliance) and ignition source or (for example: an operating electric
heater) close to the appliance.
• Do not pierce or burn.
• Be aware that the refrigerants may not contain an odor.
• Compliance with national gas regulations shall be observed.
• Keep ventilation openings clear of obstruction.
• The appliance shall be stored so as to prevent mechanical damage from occurring. The appliance
shall be stored in a well-ventilated area where the room size corresponds to the room area as
specied for operation.
• Any person who is involved with working on or breaking into a refrigerant circuit should hold a current
valid certicate from an industry-accredited assessment authority, which authorizes their competence
to handle refrigerants safely in accordance with an industry recognized assessment specication.
• Servicing shall only be performed as recommended by the equipment manufacturer. Maintenence and
repair requiring the assistance of other skilled personnel shall be carried out under the supervision of
the person competent in the use of ammable refrigerants.
• DO NOT modify the length of the power cord or use an extension cord to power the unit. DO NOT
share a single outlet with other electrical appliances. Improper power supply can cause re or
electrical shock.
• Please follow the instruction carefully to handle, install, clear, service the air conditioner to avoid any
damage or hazard. Flammable Refrigerant R32 is used within air conditioner. When maintaining or
disposing the air conditioner, the refrigerant (R32 or R290) shall be recovered properly, shall not
discharge to air directly. No open re or device which may generate spark/arcing shall be around air
conditioner to avoid causing ignition of the ammable refrigerant used. Please follow the instructions
carefully to store or maintain the air conditioner to prevent mechanical damage from occurring.
• Flammable refrigerant -R32 is used in this air conditioner. Please follow the instructions carefully to
avoid any hazard.

Owner’s Manual - RG/RADS Series
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Explanation of symbols displayed on the unit (R32/R290 Refrigerant only):
1) Checks to the area
Prior to beginning work on systems containing ammable refrigerants, safety checks are necessary to
ensure that the risk of ignition is minimized. For repair to the refrigerating system, the following precau-
tions shall be complied with prior to conducting work on the system.
2) Work procedure
Work shall be undertaken under a controlled procedure so as to minimize the risk of a ammable gas or
vapor being present while the work is being performed.
3) General work area
All maintenence sta󰀨 and others working in the local area shall be instructed on the nature of work
being carried out. Work in conned spaces shall be avoided. The area around the workspace shall be
sectioned o󰀨. Ensure that the conditions within the area have been made safe by control of ammable
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 ammable atmospheres. Ensure that the leak detection equipment
being used is suitable for use with ammable refrigerants, i.e. non-sparking, adequately sealed or
intrinsically safe.
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 at hand. Have a dry powder or CO2 re extinguisher adjacent
to the charging area.
6) No ignition sources
No person carrying out work to a refrigeration system which involves exposing any
IMPORTANT SAFETY INSTRUCTIONS
WARNINGS (for using R290/R32 refrigerant only)
1. Transport of equipment containing ammable refrigerants
See transport regulations
2. Marking of equipment using signs
See local regulations
3. Disposal of equipment using ammable refrigerants
See national regulations.
4. Storage of equipment/appliances
The storage of equipment should be in accordinance with the manufacturer’s instructions.
5. Storage of packed (unsold) equipment
Storage package protection should be constructed such that mechanical damage to the equipment
inside the package will not cause a leak of the refrigerant charge.
The maximum number of pieces of equipment permitted to be stored together will be determined by
local regulations.
6. Information on servicing
This symbol shows that this appliance uses a ammable refrigerant. If the refrigerant is
leaked and exposed to an external ignition source, there is a risk of re.
This symbol shows that the operation manual should be read carefully.
This symbol shows that service personnel should handle this equipment with reference to
the installation manual.
This symbol shows that information is available such as the operating manual or
installation manual.

Owner’s Manual - RG/RADS Series
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6
IMPORTANT SAFETY INSTRUCTIONS
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.
7)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.
8)Checks to the refrigeration equipment
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:
The charge size 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 being so corroded.
9)Checks to electrical devices
Repair and maintenance to electrical components shall include initial 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 continue 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 manner to avoid possibility of
sparking;
That there no live electrical components and wiring are exposed while charging, recovering
or purging the system;
That there is continuity of earth bonding.
7.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.
1) During repairs to sealed components, all electrical supplies shall be disconnected from the
equipment being worked upon to 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 protection shall be located at the most critical point to warn of a poten-
tially hazardous situation.
2) 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 a󰀨ected.

Owner’s Manual - RG/RADS Series
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IMPORTANT SAFETY INSTRUCTIONS
This shall include damage to cables, excessive number of connections, terminals not made
to original specification, damage to seals, incorrect fitting
of glands, etc.
Ensure that apparatus is mounted securely.
Ensure that seals or sealing materials have not degraded such that they no longer serve the
purpose of
preventing the ingress of flammable atmospheres. Replacement parts shall be in accordance
with the manufacturer's specifications.
NOTE: The use of silicon sealant may inhibit the effectiveness of some types of leak detection
equipment. Intrinsically safe components do not have to be isolated prior to working on them.
8.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.
Intrinsically safe components are the only types that can be worked on while live in the
presence of a flammable atmosphere. The test apparatus shall be at the correct rating.
Replace components only with parts specified by the manufacturer. Other parts may result in
the ignition of refrigerant in the atmosphere from a leak.
9.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.
10.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.
11.Leak detection methods
The following leak detection methods are deemed acceptable for systems containing flammable
refrigerants. Electronic leak detectors shall be used to detect flammable refrigerants, but 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 suitable for the refrigerant used. Leak detection equipment shall be set at a percentage of
the LFL of the refrigerant and shall be calibrated to the refrigerant employed and the appropriate
percentage of gas (25 % maximum) is confirmed. Leak detection fluids are suitable for use with
most refrigerants but the use of detergents containing chlorine shall be avoided as the chlorine
may react with the refrigerant and corrode the copper pipe-work. If a leak is suspected, all
naked flames shall be removed/ extinguished. If a leakage of refrigerant is found which requires
brazing, all of the refrigerant shall be recovered from the system, or isolated (by means of shut
off valves) in a part of the system remote from the leak. Oxygen free nitrogen (OFN) shall then
be purged through the system both before and during the brazing process.
12.Removal and evacuation
When breaking into the refrigerant circuit to make repairs or for any other purpose conventional
procedures shall be used. However, it is important that best practice is followed since
flammability is a consideration. Opening of the refrigeration systems shall not be done by brazing.
The following procedure shall be adhered to:
Remove refrigerant;
Purge the circuit with inert gas;
Evacuate;
Purge again with inert gas;
Open the circuit by cutting or brazing.
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Owner’s Manual - RG/RADS Series
10
13. Charging procedures
In addition to conventional charging procedures, the following requirements shall be followed.
Ensure that contamination of di󰀨erent refrigerants does not occur when using charging
equipment. Hoses or lines shall be as short as possible to minimize the amount of refrigerant
contained in them.
Cylinders shall be kept upright.
Ensure that the refrigeration system is grounded prior to charging the system with refrigerant.
Label the sustem when charging is complete (if not already).
Extreme care shall be taken not to overll the refrigeration system.
Prior to recharging the system it shall be pressure tested with OFN. The system shall be
leak tested on completion of charging but prior to comissioning. A follow up leak test shall be
carried out prior to leaving the site.
14. Decomissioning
Before carrying out this procedure, it is essential that the technician is completely familiar
with the equipment and all its detail. It is reccommended good practice that all refrigerants
are recovered safely. Prior to the task being carried out, an oil and refrigerant sample shall be
taken in case analysis is required prior to re-use of reclaimed refrigerant. It is essential that
electrical power is available before the task is commenced.
IMPORTANT SAFETY INSTRUCTIONS
The refrigerant charge shall be recovered into the correct recovery cylinders. The system shall
be ushed with OFN to render the unit safe. This process may need to be repeated several
times. Compressed air or oxygen shall not be used for this task.
Flushing shall be achieved by breaking the vacuum in the system with OFN and continuing to
ll until the working pressure is achieved, then venting to atmosphere, and nally pulling down
to a vacuum. This process shall be repeated until no refrigerant is within the system. When the
nal OFN charge is used, the system shall be vented down to atmospheric pressure to enable
work to take place. This operation is absolutely vital if brazing operations on the pipe-work are
to take place.
Ensure that the outlet for the vacuum pump is not close to any ignition sources and there is
ventilation available.
a) Become familiar with the equipment and its operation.
b) Isolate system electrically
c) Before attempting the procedure, ensure that:
Mechanical handling equipment is available, if required, for handling refrigerant cylinders; All
personal protective equipment is available and being used correctly;
The recovery process is supervised at all times by a competent person;
Recovery equipment and cylinders conform to the appropriate standards.
d) Pump down refrigerant system, if possible.
e) If a vacuum is not possible, make a manifold so that refrigerant can be removed from
various parts of the system.
f) Make sure that cylinder is situated on the scales before recovery takes place.
g) Start the recovery machine and operate in accordance with manufacturer’s instructions.
h) Do not overll cylinders. (No more than 80% volume liquid charge).
i) Do not exceed the maximum working pressure of the cylinder, even temporarily.
j) When the cylinders have been lled correctly and the process completed, make sure that the
cylinders and