COOLZY-GO PC9RB Operating and maintenance manual
COOLZY-GO Model PC9RB User Guide EN2022 Rev1.1 1
USER GUIDE AND WARRANTY
This product contains a small amount of
R290 refrigerant with negligible global
warming impact. The refrigerant is am-
mable. Read the safety precauons rst!
Avoid using this product in a wet en-
vironment. Ensure that anyone using
this product is aware of normal safety
precauons for household electric appli-
ances.
Caution
Risk of re
Coolzy products are distributed in the European Union and UK by Close Comfort Internaonal
Pte Ltd, Singapore, UEN 201527973E.
2 COOLZY-GO Model PC9RB User Guide EN2022 Rev1.1
PARTS
COOLZY-GO Model PC9RB User Guide EN2022 Rev1.1 3
GETTING STARTED
1) Aer removing Coolzy from the box, place it in
an upright posion.
2) Remove the cable from the drawer at the back
of the unit and insert the plug into a wall outlet.
Make sure you push the drawer fully back in so it
aligns with the back panel.
3) Open the warm air deector fully. This will
turn on the unit and the compressor will start.
4) Open the cold air deector and allow 2 min-
utes for the air coming out to feel cold.
5) Keep a door or window open so fresh air circu-
lates unless it is extremely hot or windy outside.
6) Avoid using a fan nearby as it can disrupt
Coolzy’s gentle air ow.
7) An adjustable nozzle (Focus Enhancer) is avail-
able for purchase as an accessory. It extends the
range of cooling and, aer ng the transparent
ap that comes with it, enables a higher angle of
air ow.
Posion Coolzy close enough
for comfort. The ideal range of
distance is 1 - 1.5 metres. Arrange
the angle of the cold air deector
so cool air ows around face and
shoulders.
For sleeping, arrange your unit
about 15cm from the end of the
bed. Adjust the cold air deector
to the desired angle so the cool
air ows over your face and upper
body. It also works with larger
beds for two people.
Drape a curtain as shown to exclude
light when sleeping. Make sure that
the room air intake is at least 15 cm
from the wall!
For a small room, place the unit near
an open window or doorway.
IMPORTANT
Always keep Coolzy upright. It may have been
stored or transported on it’s side or laid at by
mistake, so please stand it upright for at least 12
hours before plugging it into power and turning it
on. Failing to do so may damage the unit.
4 COOLZY-GO Model PC9RB User Guide EN2022 Rev1.1
Use the oponal Igloo tent for a more
intense cooling eect and insect
protecon. We recommend using
the Igloo tent for sleeping if indoor
temperature is over 27 °C.
DEHUMIDIFICATION
Coolzy condenses water from the room air in humid weather condions. Normally
this water evaporates into the air emerging from the warm air outlet, improving the
cooling power.
To collect the condensed water instead, open the cable drawer and remove the
stopper just above it. This will allow some of the condensed water to collect in the
drawer. When the cable drawer is full, the white water drop indicator comes on and
Coolzy will pause. Carefully remove the cable drawer and empty the water. The cable
drawer can store about two litres of condensed water.
Remember to replace the stopper for normal, high eciency cooling.
COOLZY-GO Model PC9RB User Guide EN2022 Rev1.1 5
USER MAINTENANCE
We recommend inspecng at least the return air inlet lter once every two weeks.
Once there is a noceable amount of dust, clean all three lters by rinsing them
under running water.
Remove the cool air outlet grille to access the foam lter beneath it. Replace the
grille aer cleaning the foam lter.
In dusty locaons, consider arranging for an air condioning technician to clean the
inside before the summer season.
The refrigerant circuit is permanently welded: there is no need to recharge the gas.
INDICATOR LIGHTS
Power (green light)
This shows that the electrical power is on. When the green light ashes, Coolzy is
waing 1 – 2 minutes for the compressor to start cooling.
Water drop (white light)
In normal condions, all the water condensed inside the cooler will evaporate into
the air emerging from the warm air outlet. This evaporaon increases the cooling
performance in humid condions.
If you remove the stopper, following the dehumidicaon instrucons, condensed
water ows into the cable drawer instead. The water drop light comes on when the
cable drawer is full of water.
The water drop light also comes on if the cable drawer is not fully inserted and ush
with the back panel.
When it is extremely humid, greater than 95% lasng for several hours, water can
overow from the cooler into the cable drawer.
If the water drop light is on, carefully remove the cable drawer and empty any water.
Make sure you push the drawer fully back in so it aligns with the back panel.
Snowflake (blue light)
The cooler temperature so low that there is a risk that ice may form, damaging the
tubes in Coolzy. Some combinaons of low temperature, humidity and atmospheric
pressure can lead to frosng. Allow the fan to operate for a few minutes to warm up
Coolzy.
6 COOLZY-GO Model PC9RB User Guide EN2022 Rev1.1
Also, check the air inlet lters for excessive dust build-up. Ensure that there is nothing
blocking the either of the air inlets such as a curtain, cushion or bedding.
Thermometer (red light)
The compressor has overheated. Coolzy can be used in ambient temperatures up to
40 °C. Above that temperature, the compressor may overheat. Wait for 10 – 20 min-
utes and try again. Avoid using Coolzy in direct sunlight.
Check the air inlet lters for excessive dust build-up. Ensure that there is nothing
blocking the either of the air inlets such as a curtain, cushion or bedding.
TROUBLESHOOTING
Symptom 1 – Green light is not on when trying to turn on
Coolzy
Make sure the warm air deector is fully open. Check to see if the power supply is
properly connected and on. If the power cord seems properly connected, try a dier-
ent power supply. Make sure you push the cable drawer fully back in so it aligns with
the back panel.
Symptom 2 – Green light is on with no cooling
The green light ashes, the fan runs and the compressor waits to start cooling for
about 90 seconds. This delay protects the compressor from damage.
If the green light is on and the fan is running, and there is no apparent cooling aer
2 minutes, check the room air temperature. The compressor will only run at an air
temperature greater than 17 °C.
Symptom 3 – Water sloshing noise
In extremely high humidity, the producon of condensed water may exceed the ca-
pacity to evaporate water at the condenser heat exchanger. As more water accumu-
lates than in normal condions, there may be a percepble sound of water cascading
o the condenser at the back of the machine. This is normal behaviour. If the sound
is annoying, consider removing the stopper temporarily. The water will drain into the
cable drawer. However the machine will stop cooling when the cable drawer is full of
water.
Symptom 4 – Room seems to warm up
As you become accustomed to the cool microclimate that Coolzy provides for you,
the other parts of the room may seem to be warmer. There may be a slight increase
in air temperature in the space above the warm air deector, but this is normally not
enough to heat up the lower part of the room.
Keep a door or window open. This is a healthy opon. Posion Coolzy’s warm air
outlet to face the open window or door so warm air can ow out more easily. Unlike
normal room air condioners, Coolzy works just best with open doors or windows
and fresh air circulang.
A slight temperature increase can occur in a small room, especially if the windows are
closed. The setup instrucons show how to minimize this eect. Visit www.coolzy.
com for more suggesons to improve venlaon.
Symptom 5 – Gradual loss of cooling
Dust accumulang on the air lters will reduce the cooling. Clean all three air lters
COOLZY-GO Model PC9RB User Guide EN2022 Rev1.1 7
following the instrucons in this guide.
SUPPORT
www.coolzy.com provides FAQs and helpful informaon, updated frequently, along
with your local retailer and service agent informaon and your local customer sup-
port phone number.
Ask any general, support, warranty or technical quesons by emailing us at
contact@coolzy.com.
8 COOLZY-GO Model PC9RB User Guide EN2022 Rev1.1
SPECIFICATIONS
COOLZY
Model number PC9RB
Power source 220 - 240 V AC, 50 Hz
Minimum operang voltage 185 V
Rated power input 430 W (40 °C, 35% RH)
Typical power input 340 W (33 °C, 80% RH)
Compressor type Reciprocang
Cooling capacity * 800 W – 1100 W (3300 – 4500 BTU/hr)
Cool air ow rate 90 m3/hr
Cool side temperature reducon 8 - 12 °C
Refrigerant R290, 90 g
Power cord, storage drawer † 4 m, 2.5 litres
Operang environment (indoors) 20 °C - 40 °C
Width 273 mm (packed 310)
Depth 385 mm (packed 410)
Height 550 mm (packed 610)
Weight 17 kg (packed 18.6 kg)
Noise ‡ 52 dBA
Wheels 4 swivel wheels
Plumbing and pipes needed None
Consumables needed None
Filter cleaning Check every 2 weeks
* Cooling power ranges up to 1100 Wa with automac evaporaon of condensed
water, depending on local temperature and humidity. Electricity consumpon varies
depending on temperature and humidity.
† Drawer can oponally be used to collect condensed water.
‡ Apparent noise level in bedroom, depends on fan speed and furnishings.
Fuse parameters of the machine
Type: 5ET or SMT Voltage: 250V Current: 3.15 A
COOLZY-GO Model PC9RB User Guide EN2022 Rev1.1 9
WARRANTY
Coolzy and accompanying accessories are warranted against defects in design,
materials and workmanship. The warranty period is 2 years from the date of original
purchase, provided the purchaser registers their details at hps://www.coolzy.com/
eu/support/warranty/. Without purchase registraon, the warranty period is one
year. This warranty is valid for the European market.
Defects in equipment covered by this warranty will be repaired or replaced at Close
Comfort’s opon at no charge to the purchaser for parts or direct repair labour. The
purchaser must return the product(s) to an authorized Coolzy dealer or agent for
warranty repairs. Home service is not provided. The purchaser is responsible for all
transportaon costs and in-transit insurance associated with returning the device to
the authorized repair centre. In some cases, the purchaser will be able to make the
necessary repair or replacement.
Any part or equipment replaced under this warranty will be warranted in accordance
with the following provisions with the terms of this warranty for the remainder of the
original warranty period, or 60 days from return, whichever is greater.
THE PROVISIONS OF THIS LIMITED WARRANTY ARE IN LIEU OF ANY OTHER WRITTEN
WARRANTY, EXPRESS OR IMPLIED, WRITTEN OR ORAL (INCLUDING WARRANTIES
RELATING TO MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE). IN NO
EVENT SHALL THE SELLER OR CLOSE COMFORT BE LIABLE FOR ANY SPECIAL, INCIDEN-
TAL CONSEQUENTIAL OR INDIRECT DAMAGES. Nothing in the limited warranty limits
or restricts any rights granted by European or naonal consumer legislaon.
Warranty Exclusions
1. Damage, trouble, or unsasfactory performance of the device caused by faulty or
improper external wiring, improper power supply, voltage uctuaons, power surges,
or electromagnec interference not originang from the device.
2. Damage or problems caused by the use of an accessory, component or equipment
not supplied by Close Comfort.
3. Damage or trouble caused by storm, re, ood, vandalism, negligence, accident,
force majeure, earthquake, war, vermin, foreign maer entering the device (e.g. dirt
and moisture) or any other outside organism.
4. Freight charges (including insurance) incurred by the owner in returning the appli-
ance to Close Comfort or an authorized repair center, dealer or agent.
5. In-home or on-site service and all associated costs.
6. Any consumable item supplied with the device, unless the item is found to be
defecve at the me of purchase.
7. Damage or problems or unsasfactory performance resulng from operaon in an
environment where the environmental comfort of people is not the primary funcon
of the unit.
8. Damage caused by operaon in a corrosive atmosphere or excessive humidity.
9. Damage from problems or unsasfactory performance resulng from operaons
under condions other than those specied in the Close Comfort technical or com-
mercial documentaon applicable to the device.
10. Damage, trouble or unsasfactory performance resulng from misapplicaon of
the unit.
11. Damage or problems caused by repair work carried out by someone who has not
been authorized by Close Comfort to carry out repairs.
10 COOLZY-GO Model PC9RB User Guide EN2022 Rev1.1
Owner responsibilities
a. Use and care of the device in accordance with the instrucons for use provided
with the device.
b. Regular cleaning of air lters (every two weeks) and replacement if damaged.
c. Cleaning of the heat exchangers by a qualied air condioning technician in the
event of excessive accumulaon of dust on the ns and the tubes.
Warranty claim steps
1. Stop using the device and unplug it from any power source.
2. Contact the retailer where the product(s) were purchased.
3. If the product(s) were purchased directly from Close Comfort, report the defect
and provide a detailed descripon with photos, sound recording or video if possible.
Email these details to contact@coolzy.com, or use the contact form at hps://www.
coolzy.com/.
4. Once acknowledgment is received, follow Close Comfort’s instrucons on prepar-
ing to return and sending unit for warranty evaluaon.
5. Provide proof of original purchase, such as a retailer’s sales receipt, or proof of
payment of an original tax invoice.
DISPOSAL
This marking indicates that this product should not be
disposed with other household wastes throughout the EU.
To prevent possible hazards to the environment or human
health from uncontrolled waste disposal, please recycle it to
prove the sustainable reuse of material resources. Please ask
‘return and collecon’ systems or contact the retailer where
the product was purchased to return your used device, they
can recycle products safely.
COOLZY-GO Model PC9RB User Guide EN2022 Rev1.1 11
SAFETY PRECAUTIONS
CAUTION!
1. Do not use means to accelerate the defrosng process or to clean, other than
those recommended by the manufacturer.
2. This appliance shall be stored in a room without connuously operang ignion
sources (for example: open ames, an operang gas appliance or an operang
electric heater.)
3. Do not pierce or burn this appliance.
4. Be aware that refrigerants may not contain an odour.
5. This appliance shall be installed, operated and stored in a room with a oor area
larger than 4 m2.
Refrigerant gas
The refrigerant gas in this appliance is propane, also designated as R290 refrigerant.
Propane is a natural gas with around 200 mes less greenhouse impact than R32, the
refrigerant commonly used in split air condioners.
Propane is highly ammable. The quanty used in this air condioner is about 100
grams, about the same as the ammable propellant gas used in spray cans.
You may not be able to smell leaking propane gas.
Before operating this appliance
This appliance must stand upright at all mes. If you are unsure whether the appli-
ance has been stored or transported upright, stand the appliance upright for at least
12 hours before turning it on to allow liquid refrigerant inside the appliance tubing to
drain to the boom.
Make sure that the electric cable to the appliance is undamaged and in good condi-
on.
Operating this appliance
This appliance designed for localised cooling. It can also provide dehumidicaon
above a temperature of 20 ˚C by removing the stopper temporarily. Do not use this
appliance for purposes other than its intended uses.
Operate this appliance in a venlated space. We recommend keeping at least one
window or door at least partly open at all mes.
Make sure that air can pass easily to the inlets and away from the outlets of this
appliance. Keep the appliance suciently far from curtains or furniture to enable free
air movement.
Operate the appliance on a horizontal surface to avoid water leakage. If you use this
appliance on a table or plaorm above the oor, make sure it cannot roll o the plat-
form by accident.
Do not use this appliance in a corrosive atmosphere.
Avoid using this appliance in a wet area such as a washroom. Avoid using this appli-
ance in an ambient temperature above 40 ˚C.
Wait at least 2 minutes aer switching this appliance o before turning it on again
to avoid damage to the compressor. Aer switching on the unit, the compressor will
start aer about 1.5 minutes as a further precauon to protect the compressor.
The peak current needed by this appliance can be as high as 7 amps at the instant of
starng the compressor. Using an extension cord or unreliable electrical connectors
12 COOLZY-GO Model PC9RB User Guide EN2022 Rev1.1
can be dangerous.
This appliance can be used by children aged from 8 years and above and persons with
reduced physical, sensory or mental capabilies or lack of experience and knowledge
if they have been given supervision or instrucon concerning use of the appliance in
a safe way and understand the hazards involved.
Children shall not play with the appliance. Cleaning and user maintenance shall not
be performed by children without supervision.
This appliance is not intended for use by persons (including children) with reduced
physical, sensory or mental capabilies, or lack of experience and knowledge, unless
they have been given supervision or instrucon 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 qualied persons in order to avoid a hazard. The appliance shall be
installed in accordance with naonal wiring regulaons.
Do not operate your air condioner in a wet room such as a bathroom or laundry
room.
Storing this appliance
Make sure that you store this appliance in a venlated room at least 4 m2in size
without connuously operang ignion sources (for example: open ames, an oper-
ang gas appliance or an operang electric heater with a heang element directly in
contact with air).
Make sure the appliance is stored safely to protect it from damage that could cause
refrigerant leakage. Local regulaons may restrict the maximum number of applianc-
es that can be stored in one locaon.
Maintaining this appliance
Keep the appliance clean using a moist cloth with the least possible cleaning agent
if needed. Make sure you inspect the lters regularly and remove any accumulaon
of dust by gently rubbing and rinsing the lters in clean water. Do not use any sharp
tools to remove dust or dirt from this appliance.
Servicing this appliance
An authorised and appropriately trained refrigeraon or air condioning technician is
required for repairs to the electric cable or servicing for any component that requires
removal of the outside casing. Close Comfort will provide advice needed to enable
technicians to service Close Comfort products.
All servicing must be performed in a well venlated space.
Disposing this appliance
Do not pierce this appliance with a sharp object or burn this appliance. Take it to an
appropriate disposal or recycling centre. Close Comfort can provide informaon on
appropriate disposal sites if you need help.
Make sure you comply with naonal regulaons for refrigerant disposal.
Electrical supply
The air-condioner can be connected only to an alternave current supply with 50
Hertz frequency, within the voltage limits for this appliance, and with system im-
pedance no more than 0.219Ω. If in doubt, please consult an appropriately trained
COOLZY-GO Model PC9RB User Guide EN2022 Rev1.1 13
electrician or your supply authority for system impedance informaon.
Transport
This appliance must be transported upright, preferably protected by the original pack-
aging. Please comply with local transport regulaons on handling appliances with a
small quanty of ammable refrigerant.
SERVICE INSTRUCTIONS FOR TECHNICIANS
This equipment is designed to be hermecally sealed at the
factory and normally there should be no need for servicing or
maintenance of the refrigeraon circuit during the life of the
appliance. In exceponal circumstances, however, servicing
may be necessary or desirable.
These instrucons must be provided to any technician performing service on this
equipment. The technician must be appropriate qualied for the servicing of electri-
cally powered air condioning or refrigeraon equipment.
Prior to beginning work on systems containing ammable refrigerants, safety checks
are necessary to ensure that the risk of ignion is minimised. For repair to the refrig-
erang system, the following precauons shall be complied with prior to conducng
work on the system.
All technicians and others working in the local area shall be instructed on the nature
of the work being carried out. Avoid working in conned spaces. Secon o the area
around the workspace. Ensure that the condions within this area have been made
safe by controlling ammable material. Work 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.
This equipment is charged with 90 grams of R290 (propane) refrigerant which is
less than the smallest amount at which special safety precauons are prescribed by
internaonal standards. However, in order to aord the highest standard of safety, we
provide the following servicing instrucons to be followed by appropriately qualied
technicians.
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 potenally ammable atmospheres.
Ensure that the leak detecon equipment being used is suitable for use with amma-
ble refrigerants, i.e. non-sparking, adequately sealed or intrinsically safe.
Presence of fire extinguisher
If any hot work is to be conducted on the refrigeraon equipment or any associated
parts, appropriate re exnguishing equipment must be available. Have a dry powder
or CO2 re exnguisher adjacent to the charging area.
No ignition sources
No person carrying out work in relaon to a refrigeraon system which involves ex-
posing any pipe work that contains or has contained ammable refrigerant shall use
any sources of ignion in such a manner that it may lead to the risk of re or explo-
sion. All possible ignion sources, including cigaree smoking, should be kept su-
ciently far away from the site of installaon, repairing, removing and disposal, during
14 COOLZY-GO Model PC9RB User Guide EN2022 Rev1.1
which ammable refrigerant can possibly be released to the surrounding space. Prior to
work taking place, the area around the equipment must be surveyed to make sure that
there are no ammable hazards or ignion risks. “No Smoking” signs shall be displayed.
Ventilated area
Ensure that the area is in the open or that it is adequately venlated before breaking into
the system or conducng any hot work. A degree of venlaon shall connue during the
period that the work is carried out. The venlaon should safely disperse any released
refrigerant and preferably expel it externally into the atmosphere.
Check the refrigeration equipment
Where electrical components are being changed, they shall be t for purpose with the
correct specicaon. At all mes the manufacturer’s maintenance and service guidelines
shall be followed. If in doubt consult the manufacturer’s technical department for assis-
tance.
The following checks shall be applied to installaons using ammable refrigerants:
The charge size is in accordance with the room size within which the refrigerant contain-
ing parts are installed.
The venlaon machinery and outlets are operang adequately and are not obstructed.
If an indirect refrigerang circuit is being used, the secondary circuit shall be checked for
the presence of refrigerant.
Marking on the equipment must be visible and legible. Markings and signs that are illegi-
ble shall be replaced.
Refrigeraon pipe or components must be installed in a posion 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.
Checks on electrical devices
Repair and maintenance for electrical components shall include inial safety checks and
component inspecon procedures. If a fault exists that could compromise safety, then
no electrical supply shall be connected to the circuit unl it is sasfactorily dealt with. If
the fault cannot be corrected immediately but it is necessary to connue operaon, an
adequate temporary soluon shall be used. This shall be reported to the owner of the
equipment so all pares are advised.
Inial 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, recov-
ering or purging the system;
• That there is connuity 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 operang form of leak detecon shall be located at the most crical point
COOLZY-GO Model PC9RB User Guide EN2022 Rev1.1 15
to warn of a potenally hazardous situaon.
Parcular aenon shall be paid to ensure that by working on electrical components, the
casing is not altered in such a way that the level of protecon is aected. This shall in-
clude damage to cables, excessive number of connecons, terminals not made to original
specicaon, damage to seals, incorrect ng 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 prevenng the ingress of ammable atmospheres. Replacement parts
shall be in accordance with the manufacturer’s specicaons.
NOTE: The use of silicon sealant may inhibit the eecveness of some types of leak
detecon equipment. Intrinsically safe components do not have to be isolated prior to
working on them.
Repair of intrinsically safe components
Do not apply any permanent inducve or capacitance loads to the circuit without
ensuring that this will not exceed the permissible voltage and current permied for the
equipment in use.
Intrinsically safe components are the only types that can be worked on while live in the
presence of a ammable atmosphere. The test apparatus shall be at the correct rang.
Replace components only with parts specied by the manufacturer. Other parts may
result in the ignion of refrigerant in the atmosphere from a leak.
Cabling
Check that cabling will not be subject to wear, corrosion, excessive pressure, vibraon,
sharp edges or any other adverse environmental eects. The check shall also take into
account the eects of aging or connual vibraon from sources such as compressors or
fans.
Detection of flammable refrigerants
Under no circumstances shall potenal sources of ignion be used in the searching for or
detecon of refrigerant leaks. A halide torch (or any other detector using a naked ame)
shall not be used.
Leak detecon methods
The following leak detecon methods are deemed acceptable for systems containing
ammable refrigerants.
Electronic leak detectors shall be used to detect ammable refrigerants, but the sensi-
vity may not be adequate, or may need re-calibraon. (Detecon equipment shall be
calibrated in a refrigerant-free area.) Ensure that the detector is not a potenal source of
ignion and is suitable for the refrigerant used. Leak detecon equipment shall be set at
a percentage of the lower ammability limit of the refrigerant (2.1% for R290 propane)
and shall be calibrated for the refrigerant employed and the appropriate percentage of
gas (25 % maximum) is conrmed.
Leak detecon uids 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 ames shall be removed/exnguished.
If a leakage of refrigerant is found which requires brazing, all of the refrigerant shall be
16 COOLZY-GO Model PC9RB User Guide EN2022 Rev1.1
recovered from the system, or isolated (by means of shut o valves) in a part of the sys-
tem remote from the leak. Oxygen free nitrogen (OFN) shall then be purged through the
system both before and during the brazing process.
Removal and evacuation
When breaking into the refrigerant circuit to make repairs – or for any other purpose –
convenonal procedures shall be used. However, it is important that best pracce is fol-
lowed since ammability is a consideraon. 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 cung or brazing.
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 repeat-
ed several mes. 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 connuing to ll unl
the working pressure is achieved, then venng to atmosphere, and nally pulling down to
a vacuum. This process shall be repeated unl 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 operaon is absolutely vital if brazing operaons on
the pipe-work are to take place. Ensure that the outlet for the vacuum pump is not close
to any ignion sources and there is venlaon available.
Charging procedures
In addion to convenonal charging procedures, the following requirements shall be
followed.
– Ensure that contaminaon of dierent refrigerants does not occur when using charging
equipment. Hoses or lines shall be as short as possible to minimise the amount of refrig-
erant contained in them.
– Cylinders shall be kept upright.
– Ensure that the refrigeraon system is earthed prior to charging the system with refrig-
erant.
– Label the system when charging is complete (if not already).
– Extreme care shall be taken not to overll the refrigeraon system. Prior to recharging
the system it shall be pressure tested with OFN. The system shall be leak tested on com-
pleon of charging but prior to commissioning. A follow up leak test shall be carried out
prior to leaving the site.
Decommissioning
Before carrying out this procedure, it is essenal that the technician is completely
familiar with the equipment and all its detail. It is recommended good pracce 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 essenal that electrical power is available before the task is commenced.
Become familiar with the equipment and its operaon.
Isolate system electrically.
COOLZY-GO Model PC9RB User Guide EN2022 Rev1.1 17
Before aempng the procedure ensure that:
• Mechanical handling equipment is available, if required, for handling refrigerant cylin-
ders;
• All personal protecve equipment is available and being used correctly;
• The recovery process is supervised at all mes by a competent person;
• Recovery equipment and cylinders conform to the appropriate standards.
Pump down refrigerant system, if possible.
If a vacuum is not possible, make a manifold so that refrigerant can be removed from
various parts of the system.
Make sure that cylinder is situated on the scales before recovery takes place.
Start the recovery machine and operate in accordance with manufacturer’s instrucons.
Do not overll cylinders. (No more than 80 % volume liquid charge).
Do not exceed the maximum working pressure of the cylinder, even temporarily.
When the cylinders have been lled correctly and the process completed, make sure that
the cylinders and the equipment are removed from site promptly and all isolaon valves
on the equipment are closed o.
Recovered refrigerant shall not be charged into another refrigeraon system unless it has
been cleaned and checked.
Labelling
Equipment shall be labelled stang that it has been de-commissioned and emped of
refrigerant. The label shall be dated and signed. Ensure that there are labels on the
equipment stang the equipment contains ammable refrigerant.
Recovery
When removing refrigerant from a system, either for servicing or decommissioning, it is
recommended good pracce that all refrigerants are removed safely.
When transferring refrigerant into cylinders, ensure that only appropriate refrigerant
recovery cylinders are employed. Ensure that the correct number of cylinders for holding
the total system charge is available. All cylinders to be used are designated for the recov-
ered refrigerant and labelled for that refrigerant (i.e. special cylinders for the recovery of
refrigerant). Cylinders shall be complete with pressure relief valve and associated shut-o
valves in good working order. Empty recovery cylinders are evacuated and, if possible,
cooled before recovery occurs.
The recovery equipment shall be in good working order with a set of instrucons con-
cerning the equipment that is at hand and shall be suitable for the recovery of ammable
refrigerants. In addion, a set of calibrated weighing scales shall be available and in good
working order. Hoses shall be complete with leak-free disconnect couplings and in good
condion. Before using the recovery machine, check that it is in sasfactory working
order, has been properly maintained and that any associated electrical components are
sealed to prevent ignion in the event of a refrigerant release. Consult manufacturer if in
doubt.
The recovered refrigerant shall be returned to the refrigerant supplier in the correct
recovery cylinder, and the relevant Waste Transfer Note arranged. Do not mix refrigerants
in recovery units and especially not in cylinders.
If compressors or compressor oils are to be removed, ensure that they have been
18 COOLZY-GO Model PC9RB User Guide EN2022 Rev1.1
evacuated to an acceptable level to make certain that ammable refrigerant does
not remain within the lubricant. The evacuaon process shall be carried out prior to
returning the compressor to the suppliers. Only electric heang to the compressor
body shall be employed to accelerate this process. When oil is drained from a system,
it shall be carried out safely.
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