Asada ECOsaver Tetra User manual

REFRIGERANT RECOVERY MACHINE
ECOsaver Tetra
INSTRUCTION MANUAL
【Please read this manual before operating.】

ECOsaver Tetra
1
Thank you for selecting ECOsaver Tetra.
● Please give this Operation Manual to the persons who operate this machine.
● The contents of this manual must be thoroughly read by the operating persons.
● Obtain the highest performance e󱐰ciency of this machine by an appropriate safe operation.
● Keep this manual at a safe place easily accessible by operating person.
● Do not use this machine for purposes other than originally intended.
● Check the following as soon the unit is delivered:
・ Is the specication same as the ordered product?
・ Is there damage or deformation caused during delivery transit?
・ Is there shortage of accessories?
If any dissatisfaction is found, please contact the store you have purchased or our sales department.
(The contents of this manual may be changed without prior notice for changes made for improvement.)
WARNING
CAUTION
 WARNINGFORSAFETY ........................... 2
 COMPONENTSOFTHEMACHINE ...... 6
Name of Each Part ...................................... 6
Specication ................................................. 7
Standard Accessories .................................. 7
Optional Accessories
(Recovery Cylinder) .... 8
Optional Accessories (Cooling Unit) .......... 8
Optional Accessories (Other
Air-Conditioning Equipment) ...................... 8
 HOWTOUSE ................................................ 9
Preparation before Operation .................... 9
Standard Recovery Procedure ................... 11
Push/Pull Recovery Procedure .................. 17
Pressure Balancing between the
Recovery Machine and the Cylinder ......... 20
How to Purge Noncondensable Gases ................ 20
How to Recover Di󱐯erent Type of Refrigerant .... 21
In Case the Machine Stops During Operation ...... 21
 RECOVERYCYLINDER ............................. 22
 MAINTENANCE&INSPECTION ........... 23
 BEFOREREQUESTINGREPAIR
 ORSERVICES .............................................. 25
 ELECTRICWIRINGDIAGRAM .............. 26
FLOWDIAGRAM ......................................... 27
Situation that may cause death or serious injury if the operating Personnel
contact or stand near the machine or the third party person Erroneously operates
the machine.
Situation that may cause minor to medium injury or may cause damage to the
machine, if the operating personnel contact or stand near the machine or The
third party person erroneously operates the machine.
Deadly
Poison
Caution
for Gas Explosion Fire No Fire Electric
Shock
Burn Rotating
Wear
Protective
Gear
Do Not
Disassemble
Grounding
Power
Source
Voltage
Handling of
Wire
Working
Condition Others User's
Manual
The warning signs used in this manual or on the product are divided in the following two categories
FORSAFEOPERATION
CATEGORIESOFWARNINGSIGNS
INDEX

ECOsaver Tetra
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WARNING FOR SAFETY
● General warnings in operating this machine are mentioned in this section.
● While specic details are mentioned in each particular clause.
◆Whenperformingrecovery,chooselocationthathasgoodventilation.
Leakage of gas without sufficient ventilation may cause lack of oxygen cause
su󱐯ocation. 
◆Cannotrecoverammablegas(Hydrocarbonorthiskindofhydrocarbon
material)Whenmixexceptrefrigerants[Ammonia,hydrocarbon（propane,
isobutene,）etc]tothemachine,itmaycauseexplosion.
◆BurningFreoncreatesadeadlypoisonous CarbonOxy-Chlorideand
inhalingofthisgasisverydangerous.
There should be absolutely no flammable material near the working area and must
operate under good ventilation.
◆Absolutelynorematerialandsmokingduringtheworkinprocess.
Cigarette light may creates Carbon Oxy-Chloride and ignite re.
◆Useprotectiveeyeglassandhandglovewhendisconnectinghoses.
If Freon gas was touch your skin or gets in your eyes, it may cause frostbite or damage
your eye-sight.
◆Donotclosethevalvesofthemachineandthehoseswhentheyarefull
ofliquidrefrigerant.
◆Donotoperateorstoragethemachineattheplacewheretemperature
getsabove40℃ .
It may cause explosion for expand liquid gas on the higher temperature site. When the
recovery operation will nish, do operation purge certainly.
◆Useouroriginalrecoverycylinders.
◆Donotoperatethemachinewithwethandsorintherain.
If you handle electric plug and power switch with wet hands or in the rain you may have
electric shock.
◆Makesuretohavethemachineearthed(grounded).
If the machine is not properly grounded, it may cause electric shock when the machine
has electric leak.
WARNINGFORSAFETY
WARNING

ECOsaver Tetra
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◆Checkelectricpowerplugregularlytomakesurethereisnoproblem.
 Alwayshavethepluginsertedrmly.
When the plug has dirt or oil, and the connection is incomplete, it may cause electric
shock or re.
◆Donothave theelectriccordconnected withotherelectricdevicesor
branchedwithothercords.
It may cause re.
◆Donotpulltheelectricpowersourcecordandremovefromtheoutlet.
It may cause re or injury.
◆ThepowersourceshouldbeAC220-240V10Aoruseageneratorwhose
capacityis3KVAormore.
If the capacity of the generator is not large enough, it may lead to heating, smoking or
re.
See the machine plate or this manual for the detailed specications.
◆Donotsetupthemachineatlocationwheregasoline,thinner, or
ammableGasexists.
The recovery machine sparks at the stat-up time and may ignite gasoline and thinner.
If leaked gasoline or flammable gas accumulates at near the machine, it may cause
explosion and re. 
◆Always turnofftheswitchandpullout thepowersourcecord when
performinginspectionandmaintenance.
The machine may suddenly starts and cause accident.
◆Donotdisassemblebyun-authorizedrepairperson.
◆Donotoperatethemachinewiththecoverremoved.
It may cause abnormal movement and may cause injury or damage.
WARNING
WARNING FOR SAFETY

ECOsaver Tetra
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CAUTION
◆Installalterdriyeratthesuctionport.
Otherwise the compressor may be damaged.
◆Anextensioncordusedshouldbeathree-corecabtyrecablewitha
lengthof20morlesswhenitswirediameteris2.0mm2orwithalength
of30morlesswhenitswirediameteris3.5mm2.
An unsuitable extension cord (too thin or too long) may lead to starting failure or re.
Or electrical components such as capacitor, relay and so on may be damaged.
If the cord used is a two-core cord without a ground wire, you may get electric shock.
◆Donotrecoverrefrigerantwhichcontainssealant.
Sealant may clog the valves or the check valves.
◆Whenyoudonotknowtherefrigeranttoberecoveredisintheformof
liquidorintheformofvapor,tryliquidrecovery.
If liquid refrigerant goes into the compressor under the vapor recovery procedure, the
compressor may be damaged.
◆Donotletvisitorstouchthemachine.
◆Donotusethemachinewhentheresultisunpredictable.
◆Donotusethemachineforpurposesotherthantheoriginalintent.
This machine is designed to recover the specied refrigerants.
◆Donotoperateunderanexcessiveheavyloadtothemachine.
Operating under an excessive load can not only cause damage to the machine but also
causes an accident.
◆Donotusethemachineonavibratingoororonaslopingplace.
The machine or the cylinder may fall down and lead to accident.
◆Theoperatingplatformandtheworkareamustbekeptneatandclean.
atalltimeandhaveenoughlighting.
Poor working environment causes accident.
◆Donotoperatethemachineiftheoperatorisunderfatigueconditionor
inuencedbyalcoholicdrinkormedicines.
◆WhentheRecoveryMachineisnotinuse,storageatdryspaceandout
ofreachbychildren.
◆Donotuseaccessoriesotherthanreferredinthismanualorshownon
ourcatalogue.Useofotheraccessoriesmaycauseproblem.
◆Useacylinderwhoseportsizeis3/8"ormore.
WARNING FOR SAFETY

ECOsaver Tetra
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◆WhentheRecoveryMachineisdroppedorhit,inspectimmediatelyfor
damage,crack,dent,etc.
Recovery under damaged, cracked and dented condition may cause injury
◆Checkeverydayifthereisdeformedorcorrodedarea.
◆Ifabnormalcondition(strangesmell,vibration,strangenoise)is
noticed,stoptheunitand refertothePage24“BEFOREREQUESTING
REPAIRORSERVICES”inthemanual.
◆Requestforrepairorserviceinsteadofdisassemblingforrepair,
contactthestorewherethemachinewaspurchased.
◆Useourcylindersthatareexpresslymadeforrecoveryandrecycling.
CAUTION
WARNING FOR SAFETY

ECOsaver Tetra
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Discharge
pressuregauge
Recovery/
Purgeselectorvalve
Dischargevalve
Dischargeport
Powercord
Safetycable
Powerswitch
Suction
pressuregauge
Suctionvalve
Suctionport
Highpressure
warninglamp
Tankfulllamp
Breaker
Specifications/
Warninglabel
Namelabel
COMPONENTSOFTHEMACHINE
Labels are required by law for safety and the warnings are placed on the recovery machine.
If the label comes o󱐯 the machine or became dirty and unreadable, request us for new label. Replace
the label at the same position on the machine.
NameofEachPart
COMPONENTS OF THE
MACHINE

ECOsaver Tetra
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＊ Specications are subject to change without prior notice.
＊ Recovery rates vary under di󱐯erent conditions.
Specications
StandardAccessories
Item ECOsaver Tetra
Code No. ES802
Applicable
refrigerant
R12、R22、R500、R502、R134a、R404A、R407C、R407D、R422A、R422D、
R507A、R509A、R32、R1234yf、R1324ze、R115、R125、R218、R401A、R401B、
R402A、R402B、R407A、R407B、R407E、R410A、R410B、R410JA、R900JA、
R901JA、R448A、R449A、＊ R463A、R463A-J、R407H、R452A
＊ The R463A requires a special cylinder.
Recovery method Compressed vapor recovery method, Push/Pull method
Power source Single phase 220-240V
Compressor 750W (1HP) Oil less 4 cylinders
Dimensions (LxWxH) 560 x 250 x 380mm
Weight 22kg
Power consumption 859/955W (50/60Hz)
Operating current・Starting current 4.5A / 4A (50/60Hz)・44A
Operating temperature 0 ～ 40℃
Ultimate vacuum － 0.09MPa
Applicable cylinder
Float sensor type : Recovery cylinder (with oat sensor) 24L・40L・120L
Weighing type : Recovery cylinder (without oat sensor) with Digital scale with overll
prevention device 24L・40L・120L
Recovery rate R22 R134a R410A
Vapor (g/min) 400 315 325
Liquid (g/min) 6,910 4,670 7,190
Push/Pull (g/min) 20,140 19,200 19,270
Item Code No.
ECO SAVER Tetra main unit －
3/8" Charging hose 152cm blue x 1 pce Y27860
3/8" Charging hose 152cm red x 1 pce Y28060
Adapter for di󱐯erent diameter 5/16" female x 3/8" male Y06115K
Adapter for di󱐯erent diameter 1/4" female x 3/8" male Y06116K
Filter dryer 053F ES229
3/8" Ball valve 3/8" female x 3/8" male Y93846
Instruction manual IM0279
Operation manual IM0280
COMPONENTS OF THE
MACHINE

ECOsaver Tetra
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OptionalAccessories(RecoveryCylinder)
＊ Digital scale with overll prevention device must be used when recovery cylinders (without oat sensor)
are used.
＊ Our original recovery cylinder should be used.
＊ Improves the e󱐰ciency of recovery in summer climate,
recovery in large volume or recovery of R32 and
R410A by using together with a recovery machine.
Item Code No.
Cooling Unit CL3 ES801
Item Capacity Port Code No.
Refrigerant Recovery cylinder
(with oat sensor)
24L
3/8" are
TF128
40L TF131
120L TF129
Item Code No. Note
Vacuum Pump 4CFM Y93549
High e󱐰cient 2-stage vacuum pump with a check valve.
Adapter for di󱐯erent diameter Y06116K Changes the connection port from 1/4" to 3/8".
3/8" Charging hose
Plus II
183cm Y14572
The most suitable length of hose can be selected
according to the condition of job site.
244cm Y14596
366cm Y14612
500cm Y14617
762cm Y14625
1000cm Y14633
1500cm Y14650
2200cm Y14675
3000cm Y14699
Hose reel with 3/8"
Charging hose Plus
II
30m XP582 Easy to carry.
3/8" Hose with
ball valve (male x
female)
15cm Y26202 Prevents from discharging refrigerant when the hose
is removed.
Solenoid valve opener ES705
Opens a solenoid valve forcibly.
Applicable size : φ 10mm・φ 12.5mm・φ 15mm・
φ 18mm.
OptionalAccessories(OtherAir-ConditioningEquipment)
OptionalAccessories(CoolingUnit)
COMPONENTS OF THE
MACHINE

ECOsaver Tetra
9
HOWTOUSE
HOW TO USE
PreparationbeforeOperation
● “Transportation” and “Evacuation of the air
in the cylinder” should be done in view of
the following environment of usage.
① Do not use the machine in rain or in areas
where water may enter into the machine.
A fan is built into the machine for cooling
and it may suck water.
② The recovery machine should be used in a
well-ventilated area.
When the machine is used in a poor
ventilated area, you may be choked from
lack of oxygen in case of refrigerant leak.
③ Keep re away to prevent phosgene (highly
toxic substance) being generated.
④ Combustible gases (hydrocarbon system)
cannot be recovered.
If any combustible gases [ammonia,
hydrocarbon (propane, isobutene) and so
on] enter into the recovery machine, it may
catch re and may explode.
● Please note the following points before use.
① Evacuate the air from the refrigerant
recovery machine, charging hoses and
recovery cylinder (hereinafter called
recovery machine, hoses and cylinder).
② Install a lter or a lter dryer at the suction
port of the recovery machine.
③ Close the suction valve before starting the
recovery machine.
④ Abnormal noise may be heard when large
amount of liquid refrigerant enters into the
compressor.
Throttle the suction valve until the noise
cannot be heard.
⑤ Do not close the discharge valve or the
valve of the cylinder before stopping the
recovery machine during operation.
The discharge gauge may be damaged.
Close the valve on the manifold, stop the
recovery machine and then close the valves
at the discharge (high pressure) side.
⑥ The temperature of the cylinder may rise
when the ambient temperature is high or
R410A is recovered.
Lower the temperature and pressure of the
cylinder according to “page 10 4) Helpful
Information” and “page 15 Recovery
Procedure of R410A or When the Pressure
of Refrigerant is High”.
⑦ Do not enter the air into the hoses and the
cylinder.
When the cylinder contains air, evacuate
the air from the vapor valve referring to
the chart of saturation temperature and
pressure.
The air can be evacuated before discharging
the refrigerant.
⑧ Use an oil separator when refrigerant with a
large amount of oil is recovered.
The compressor may be damaged when a
large amount of oil is recovered.
⑨ Do not recover virgin refrigerant.
The compressor may be damaged if virgin
refrigerant is recovered for a long time.
If you need to recover virgin refrigerant, put
some additional oil in the compressor.
⑩ Do not recover from air conditioners in
which any sealant has ever been charged.
The sealant may clog the valves or the
compressor and the recovery machine may
be damaged.
⑪ Do not evacuate the air from the cylinder by
using the recovery machine.
The compressor may be damaged if it is run
for a long time under vacuum.
⑫ Do not leave refrigerant in the recovery
machine.
Always open the suction port and the
discharge port when the recover machine is
stored.
1）EnvironmentofUsage
● All connections between the recovery machine and the cylinder should be disconnected during
transportation.
◆ Allconnectionsbetweentherecoverymachineandthecylindershouldbedisconnected
duringtransportation.
◆ Steerclearofinjurieswhenyoucarryaheavycylinder.
2）Transportation
CAUTION

ECOsaver Tetra
10
① How to avoid rise in pressure in the cylinder
(recovery in summer / e󱐰cient setup)
 ・ Puttherecoverymachineinawell-ventilatedshadyarea.
 ・ Donotputtherecoverymachineandthecylinderdirectly
ontheoorbutapproximately1mabovetheoor.
 ・ Preparesomesparecylindersintheshade.
 ・ Sendairtothecondenseroftherecoverymachinebyan
electricfanandsoontoimprovethee󱐰ciency.
 ・ Coolthecylinderwithwetcloths.
 ・
Sendairtothecylinderbyanelectricfanandsoontocoolitdown.
 ・ UseaCoolingUnitorfollowthesub-coolingprocedure.
 ・ Recoverinliquidasmuchaspossible.
 ・ Throttlethesuction valvenottoincrease thedischarge
pressuretoomuch.
② How to prevent e󱐰ciency reduction due to the
pressure drop in the system (low temperature,
condensed to liquid / e󱐰cient setup)
 ・ Afterrecoveryinliquid,recoverfromboththeliquidandthevaporports.
 ・ Keepapplyingcurrenttothecrankcaseheaterofthesystem.
 ・ Heat up and vibratethe accumulator andso on when
theyarefrosted.
・ Suspendrecoveryoperation andwaitforpressure
increaseiftherecoveryspeedis slowwhenthe suction
pressureisaround0.1MPa.
・ Connecttomultiplesystems atatimetoreducethe
e󱐯ectoflowtemperaturecondensation.
 ・ Whentheverticalpipingislong,recoverfromthebottom
ofpipingorheatupandvibratethebottomofpipingto
speedupevaporation.
③ Eliminate the causes which obstruct the
refrigerant ow.
 ・ Removethecoredepressorinthehose.
 ・ Usehoseswithlargerdiameter.
 ・ Replacethegasketofhoseifitisdeformed.
● How to shorten the recovery time
● What to do when the temperature and pressure of the cylinder rise
① Use Cooling Unit (optional accessory). (See page 15.)
② Throttle the suction valve to reduce the suction pressure. (See page 15.)
③ Replace the cylinder with an empty one.
④ Cool the cylinder with the sub-cooling procedure.
⑤ Use a 120L cylinder.
● Use our original recovery cylinders.
● Use cylinders on which the type of refrigerant to be recovered is mentioned.
● Empty cylinders should be evacuated before use.
● How to evacuate air (Vacuum pump is optional)
① Connect the suction port of the vacuum pump
to the vapor port of the cylinder with a hose.
② Switch on the vacuum pump.
③ Close the liquid port of the cylinder and open
the vapor port.
④ Close the vapor port of the cylinder when the
vacuum reaches -0.095 to -0.1MPa.
⑤ Switch o󱐯 the vacuum pump.
⑥ Disconnect the hose between the vacuum pump
and the cylinder.
3）Cylinder
Liquidport Vaporport
Suction
port
Suction
port
Recoverycylinder Vacuumpump
4）HelpfulInformation
◆ Thecylinderisdesignedaccordingtothespecicationsoftherecoverymachine.
 Thecylindermaybeoverlledandexplodediftheappropriatecylinderisnotused.
◆ Brand-newcylindershavenitrogeninside.
 Evacuationshouldbedoneafterdischargingnitrogenbyopeningthevaporvalve.
◆ Donotevacuateairfromcylinderswhichcontainrefrigerant.
 Therefrigerantwillbedischargedtotheairandthevacuumpumpoilwillblowout.
◆ Donotevacuateairfromcylindersbyusingtherecoverymachine.
 Thecompressormaybedamagedifitisrunforalongtimeundervacuum.
CAUTION
CAUTION
HOW TO USE

ECOsaver Tetra
11
● This recovery method is the most basic and popular method.
Do not try other methods (Push/Pull recovery and so on) unless you master this method.
① Connect the hoses as above.
② Connect the safety cable to the connector on the cylinder or on
Digital scale with overll prevention
device
.
③ Install a lter dryer 053F (Code No. ES229) to the suction port of the recovery machine.
StandardRecoveryProcedure
1）Connectionofthehosesandcords
Safetycable
Ballvalve
Safetycable
Liquid
side
Vapor
side
Whenacylinderwithfloatsensorisused
Whenacylinderwithout
floatsensorisused
Manifold
（optionalaccessory）
ECOsaverTetra
Recoverycylinder
withfloatsensor
High
Low Filter
dryer
Digitalscalewith
overfillpreventiondevice
Recoverycylinder
withoutfloatsensor
Systemtobe
recovered
◆ UseDigitalscalewithoverllpreventiondevicewhenacylinderwithoutoatsensor
isused.
CAUTION
◆ Therecoverymachinewillnotstartwithoutconnectingthesafetycable.
CAUTION
◆ Makesuretheinstallingdirection.
◆ Replacethelterdryereveryrecoveryof90kgor
 whenitisclogged.
CAUTION
HOW TO USE

ECOsaver Tetra
12
① Open the low pressure side and the high pressure side valves of the manifold.
② Set the suction valve of the recovery machine to the “Open” position.
Set the selector valve to the “Recovery” position.
Set the discharge valve to the “Open” position.
③ Disconnect the hose connected to the liquid port of the cylinder.
＊ Hold the hose tightly.
④ Open the ball valve of the hose.
⑤ Switch on the recovery machine.
⑥ When the discharge pressure reaches to a vacuum,
set the suction valve to the “Purge” position.
Set the selector valve to the “Purge” position.
⑦ When the discharge pressure reaches to a vacuum again,
connect the hose to the liquid port of the cylinder.
⑧ Switch o󱐯 the recovery machine.
Valve operation
Operation
End of operation
2）Evacuationoftheairfromtherecoverymachineandthehoses
Close
Liquid
valve
Open
Ball
valve
Open
1
Low
Open
1
High
Disconnect
Hose
3
Connect
7
OFF
8
Close
Vapor
valve
Hold
tightly
Systemtoberecovered
Manifold
(optionalaccessory)
ECOsaverTetra Recoverycylinder
withfloatsensor
Recovery
Selectorvalve
Selectorvalve
2
Purge
6
Purge
6
Open
Suctionvalve
Suctionvalve
2
Open
Dischargevalve
Dischargevalve
2
ON
Powerswitch
Powerswitch
5
4
Close
High
High
Close
Low
HOW TO USE

ECOsaver Tetra
13
3）Recoveryprocedure
● Recover from the high pressure side of the system in case of liquid recovery and recover from the
low pressure side in case of vapor recovery.
● Use a cylinder whose port size is 3/8” or more.
Pleasenotethefollowingpointsasthismachineisahighspeedrecoverymachine.
Liquid Recovery
Vapor Recovery
◆ Ifa24Lcylinderisused,therecoverymachinemaystopsuddenlyduetorapid
pressureincrease.Replacethecylinderwithanemptyone.
・ Usea40Lor120Lcylinder.
・ Throttlethevalvetoregulatethepressureatthesuctionportto0.3MPaorless.
◆ Thepressureandthe temperatureinthecylinder willrisewhenthe ambient
temperatureishigh likeinsummer.Regulatethedischarge pressureofthe
recoverymachineaccordingtothefollowingchart.
・ UseCoolingUnitCL3.
・ Coolthecylinder.
・
Replacethecylinderwithanemptyone.
・ Throttlethevalvetoregulatethepressure
atthesuctionportto0.3MPaorless.
＊ Seepage○○fordetails.
Cylinder
◆ Usealargevolumecylinderwithvalveswhoseportsizeis3/8"ormore.
＊ Donotuseacylinderwithvalveswhoseportsizeis1/4".
 Otherwisetherecoverymachinemaystopfrequentlyandbedamaged.
Voltage Drop
◆ Avoidvoltagedropasthisrecoverymachineis220-240V750Wandthestarting
currentislarge.Therecoverymachinemaystopifthevoltagedrops.
◆ Useastep-uptransformerorageneratorifthevoltagedropsconsiderably.
◆
Anextensioncordusedshouldbe withalengthof 10morlesswhen itswire
diameteris1.25mm
2
orwithalengthof20morlesswhenitswirediameteris2.0mm
2
.
◆ Donotuseanextensioncordwrappedonareel.Ifthecordisusedwithwrapped
onareel,thecordmaybeoverheatedandmelt.
CAUTION
Discharge Pressure
◆ Regulatethepressure sothattheneedleof
thedischargegaugewill notgointhered
zone.
＊ Iftheoperationis continuedintheredzone,
thesafetyvalve (fusibleplug)will operate
andtherefrigerantwillbedischarged.
Redzone
Discharge
pressuregauge
Refrigerant Discharge Pressure
R12、R134a 1.3MPa
R22、R407C 2.1MPa
R410A 2.9MPa
HOW TO USE

ECOsaver Tetra
14
① Set the suction valve of the recovery machine to the “Close” position.
② Set the selector valve to the “Recovery” position.
③ Set the discharge valve to “Open” and open the liquid valve of the cylinder.
④ Open the ball valve of the hose of the discharge side.
⑤ Open the valve of the high pressure side of the manifold and open the port of the high pressure
side of the system to be recovered.
⑥ Close the valve of the low pressure side of the manifold and close the port of the low pressure
side of the system to be recovered.
⑦ Switch on the recovery machine.
⑧ Turn the suction valve of the recovery machine slowly to the “Open” position.
⑨ When liquid recovery is completed and vapor recovery starts, open the valve of the low pressure
side of the manifold and open the port of the low pressure side of the system to be recovered.
⑩ When the pressure of the low pressure side reaches to a vacuum, close both the low and the high
pressure side ports of the system as well as both the
high and the low pressure side valves of the manifold.
⑪ Switch o󱐯 the recovery machine.
⑫ Set the suction valve of the recovery machine to the
“Close” position.
Valve operation
Operation
End of operation
Open
9
Close
10
Open
3
Open
5
Close
10
Close
6
Close
6
Close
10
OFF
11
Close
Openposition
8
Turnslowlytothe
Turnslowlytothe
Close
1
Close
12
Open
3
ON
7
Open
5
Close
10
Open
9
回収
2
Open
4
Ballvalve
Ballvalve
Liquid
valve
Low
High
Vapor
valve
Systemtoberecovered
Manifold
(optionalaccessory)
ECOsaverTetra Recoverycylinder
withfloatsensor
Selectorvalve
Selectorvalve
Suctionvalve
Suctionvalve
Dischargevalve
Dischargevalve
Powerswitch
Powerswitch
High
High
Low
Concerning the end of operation・・・
After the recovery operation, leave the
system for 5 to 10 minutes to see if the
refrigerant melted in the refrigeration
oil will evaporate.
If the pressure rises from a vacuum,
repeat the recovery operation.
HOW TO USE

ECOsaver Tetra
15
● Reduce the suction pressure when R410A is recovered at high
ambient temperature.
■ Regulate the suction pressure
● Follow the following procedure when R410A or refrigerant at high pressure by heat is recovered.
● The following procedure is to cool down (sub-cool) the refrigerant in the cylinder instead of
putting the cylinder in water.
■ Cool down the cylinder (Sub-cooling)
① Connect the hoses as above and recover refrigerant.
② Switch o󱐯 the recovery machine when the temperature and the pressure in the cylinder rise.
③ Close both the high and the low pressure side valves of the manifold.
④ Open the vapor valve of the cylinder.
⑤ Set the Power switch of the recovery machine to the “ON” position.
⑥ Close the vapor valve of the cylinder when the pressure in the cylinder drops.
⑦
Open the high pressure side valve or the low pressure side valve of the manifold and continue recovery.
◆ Noncondensablesubstance(air)mayexistinthecylinderwhenthetemperatureofthe
cylinderrisesabnormallyduringrecovery.
 Removetheairorreplacethecylinder.
CAUTION
● Cooling Unit (Code No. ES801) can lower the temperature of refrigerant at high pressure.
Improves the recovery rate up to 20% by cooling refrigerant.
See the instruction manual of Cooling Unit for detailed information.
● Use an evacuated spare cylinder.
■ Use Cooling Unit CL3 (optional accessory)
■ Replacement of spare cylinder
Throttle
Lowpressure
valveofmanifold
Open
Open
Open
Open
4
Close
6
Open
Sight-glass
(optionalaccessory)
Tfitting
(availableontheopenmarket)
Close
3
Low
Open
7
Close
3
High
Open
7
Open
Recovery
ON
5
OFF
2
Open
Ballvalve
Ballvalve
Liquid
valve Vapor valve
Systemtoberecovered
Manifold
(optionalaccessory)
ECOsaverTetra Recoverycylinder
withfloatsensor
Selectorvalve
Selectorvalve
Suctionvalve
Suctionvalve
Dischargevalve
Dischargevalve
Powerswitch
Powerswitch
High
High
Low
RecoveryprocedureforR410Aorwhenthepressureofrefrigerantishigh
HOW TO USE

ECOsaver Tetra
16
① Set the selector valve of the recovery machine to the “Purge” position.
＊ Do not turn the selector valve during operation.
Otherwise the discharge pressure gauge may be damaged.
② Switch on the recovery machine.
③ Turn the suction valve of the recovery machine slowly to the “Purge” position.
④ Close the liquid port of the cylinder when the suction pressure gauge indicates vacuum.
⑤ Close the ball valve of the hose at the discharge side.
⑥ Switch o󱐯 the recovery machine.
＊ There is vapor refrigerant left in the recovery machine and the hose of the discharge side.
Connect the hose of the discharge side to an evacuated cylinder to recover the refrigerant left in
the recovery machine and the hose.
⑦ Turn the selector valve to the “Recovery” position.
⑧ Disconnect the hoses.
⑨ The suction valve and the discharge valve should be set to the “Open” position when the recovery
machine is stored.
4）Refrigerantclearing(Purge)procedure
Valve operation
Operation
End of operation
◆ Alwaysperformthepurgeprocedureaftercompletingrecovery.
 Therecoverymachinemaybedamagedifanyrefrigerantisleftinthemachine.
CAUTION
◆ Wearprotectivegogglesandrubber(leather)glovesasaminuteamountofrefrigerant
isdischarged.
 Ifrefrigerantfallsinyoureyesortouchesyourskin,itmayleadtosightlossorcold
injury.
CAUTION
Close
Close
Close
Close
Close
4
OFF
6
Open
9
Close
Purge
1
Recovery
7
Open
9
ON
2
Purgeposition
3
Turnslowlytothe
Close
5
Ballvalve
Ballvalve
Liquid
valve
Low High
Vapor
valve
Systemtoberecovered
Manifold
(optionalaccessory)
ECOsaverTetra Recoverycylinder
withfloatsensor
Selectorvalve
Selectorvalve
Suctionvalve
Suctionvalve
Dischargevalve
Dischargevalve
Powerswitch
Powerswitch
High
High
Low
HOW TO USE

ECOsaver Tetra
17
Safetycable
Liquid
side
Vapor
side
High
Low
Filter
(optionalaccessory)
Hose
(optionalaccessory)
Hose
(optionalaccessory)
Safetycable
Filter
dryer
Ballvalve
Whenacylinderwithfloatsensorisused
Whenacylinderwithout
floatsensorisused
ECOsaverTetra
Recoverycylinder
withfloatsensor
Systemtobe
recovered
Sight-glass
(optionalaccessory)
Ballvalve
(optionalaccessory)
Ballvalve
(optionalaccessory)
Digitalscalewith
overfillpreventiondevice
Recoverycylinder
withoutfloatsensor
HOW TO USE
Push/PullRecoveryProcedure
● This method is recommended for recovery from a system which has a large amount of refrigerant
(20kg or more).
● Recovery time can be reduced by recovering the liquid refrigerant in the system to the cylinder
and then recovering the remaining refrigerant in vapor.
● This method cannot be applied to the following systems.
・ Refrigeration and air-conditioning systems whose refrigerant volume is less than 20kg.
・ Systems which have a heat pump or a solenoid valve.
・ Systems which have an accumulator.
● There are some other cases to which this method cannot be applied.
Ask the manufacturer of the system if not clear.
1）Connectionofthehosesandcords
① Connect the hoses as above.
② Connect the safety cable to the connector on the cylinder or on Limit Scale.
＊ It is easy to change the hose connection after Push/Pull recovery if a 3/8” ball valve is installed
at the hose end.
◆ UseDigitalscalewithoverllpreventiondevicewhenacylinderwithoutoatsensoris
used.
◆ Therecoverymachinewillnotstartwithoutconnectingthesafetycable.
CAUTION
CAUTION

ECOsaver Tetra
18
2）Evacuationoftheairfromtherecoverymachineandthehoses
Connect
10
Open
12
Close
11
Open
Ballvalve
9
Open
Ball
valve
12
Disconnect
Hose
3
Connect
7
Close
6
Purge
6
OFF
8
Recovery
Selectorvalve
Selectorvalve
2
Suctionvalve
Suctionvalve
Open
1
Open
Dischargevalve
Dischargevalve
1
ON
Powerswitch
Powerswitch
5
Open
4
Ball
valve
Ball
valve
Close
Liquid
valve
Close
Vapor
valve
Systemtoberecovered ECOsaverTetra Recoverycylinder
withfloatsensor
Close
High
High
Close
Low
Vacuumpump
Hold
tightly
HOW TO USE
① Set the suction valve and the discharge valve of the
recovery machine to the “Open” position.
② Set the selector valve to the “Recovery” position.
③ Disconnect the hose connected to the low pressure side of the system to be recovered.
＊ Hold the hose tightly.
④ Open the ball valve of the hose.
⑤ Switch on the recovery machine.
⑥ When the suction pressure reaches to a vacuum,
set the suction valve to the “Close” position.
Set the selector valve to the “Purge” position.
⑦ When the discharge pressure reaches to a vacuum again,
connect the hose to the low pressure side of the system.
⑧ Switch o󱐯 the recovery machine.
⑨ Open the ball valve of the hose connected to the cylinder.
⑩ Connect the hose to a vacuum pump and evacuate the air from the hose.
⑪ Close the ball valve of the hose.
⑫ Connect the hose to the liquid port of the cylinder and open the ball valve.
Valve operation
Operation
End of operation

ECOsaver Tetra
19
3）Recoveryprocedure
Close
8
Close
8
Close
8
Close
8
OFF
7
Selectorvalve
Selectorvalve
Suctionvalve
Suctionvalve
Dischargevalve
Dischargevalve
ON
Powerswitch
Powerswitch
5
Open
1
Liquid
valve
Liquid
valve
Open
4
Vapor
valve
Vapor
valve
Open
6
Open
1
Purge
2
Close
8
Open
High
3
Close
8
Open
Low
3
Sight-glass
Systemtoberecovered ECOsaverTetra Recoverycylinder
withfloatsensor
HOW TO USE
① Set the suction valve and the discharge valve of the recovery machine to the “Open” position.
② Set the selector valve to the “Purge” position.
③ Open both valves of the high pressure side and the low pressure side of the system to be
recovered.
④ Open the liquid valve of the cylinder.
⑤ Switch on the recovery machine.
⑥ Open the vapor valve of the cylinder slowly.
⑦ Switch o󱐯 the recovery machine when liquid recovery is completed.
＊ Make sure that there is no liquid ow in the sight-glass.
⑧ Close all valves.
⑨ Change the connection of the hoses and perform vapor recovery according to “Standard Recovery
Procedure” as there is still some vapor refrigerant in the system.
Valve operation
Operation
End of Push/Pull recovery
◆ Wearprotectivegogglesandrubber(leather)glovesasaminuteamountofrefrigerant
isdischarged.
Ifrefrigerantfallsinyoureyesortouchesyourskin,itmayleadtosightlossorcold
injury.
◆ IncaseofPush/pullrecovery,useascaletochecktheamountofrefrigerantrecovered.

Whenthecylinderisfull,refrigerantmayberecoveredcontinuouslyevenafterthe
recoverymachinestopsandmayleadtooverlling.
CAUTION