Instructions / Assembly
REFRIGERANT
RECOVERY UNIT
OPERATING MANUAL
成品尺寸：120*175MM
NOTICE FOR USE
Dear customers, thanks for your trust and support. Thanks for using our refrigerant
recovery unit. We will provide you with the best quality and service.
Please read carefully the Operation Manual and follow the instructions while operating
this unit.
Please check if the product you see now is the product you purchased and if the attachments
and manual are fully equipped, if any damage is done during transportation.If you have
come across any of these, please contact the local distributor or our A/S.
For a long lifetime and safe running, please carefully read this manual before operating,
testing or maintaining this unit.
TABLE OF CONTENT
GENERAL SAFETY................................................................1
OPERATION MANUAL.......................................................... 3
SPECIFICATION.....................................................................6
INTRODUCTION OF OPERATION PANEL..........................7
PARTS DIAGRAM...................................................................8
WIRING DIAGRAM................................................................9
RECOVERY METHOD..........................................................10
SELF-PURGE METHOD.......................................................11
LIQUID PUSH/PULL METHOD...........................................12
TROUBLE SHOOTING.........................................................14
1
GENERAL SAFETY
SECURITY LABELS
Warning
Warning
Warning
Notice
Warning means that mis-operation can lead to body injury.
Notice means that mis-operation can do harm to the unit and lower the performance
of the unit, or even make the unit unable to work properly.
For yourbetter understanding of the security labels in this manual, we have listed the
content of these security labels for your reference.
Only a qualied technician should operate this recovery unit.
Before starting the equipment, be sure that it is well grounded.
Warning
Warning
Warning
While using electrical wire, the wire must be well connected and grounded.
Be sure the power is o before examining or repairing the recovery unit.
Warning
When the unit breaks down, be sure the power is o before you do any operation.
Warning
Please take power supply and the capacity of your ammeter and electrical wire.
Only a qualied electrician should do the wire connection according to the technical
standard and circuit diagram.
Warning
If the original power supply cord is damaged,choose carefully for the replacing one,
or you may directly buy from us.
1
1
GENERAL SAFETY
Warning
Use only authorized rellable refrigerant tanks. It requires the use of recovery tanks
with a minimum working pressure of 40 bar (580psi). Do not overll the recovery
tank.Tank is full at 80% capacity.There should be enough space for liquid expansion.
Overlling of the tank may cause a violent explosion.
Warning
An electric scale is needed to prevent overlling.
Warning
Be sure that the room where you are working is thoroughly ventilated.
Notice
Be sure the unit is working under the right power supply.
Notice
The input pressure of the unit should not exceed 26bar(377.1psi).
Notice
Do not expose the equipment to sun or rain.
Notice
The ventilation opening of the unit must not be blocked.
Notice
If the overload protector pops, reposition it after 5 minutes.
Notice
The unit need to be laid horizontally, otherwise it will lead to unexpected vibration,
noise or even abrasion.
Notice
When using an extension cord, it should be a minimum 1.5mm AWG and no longer
than 7.5 meters, or it may cause the voltage drop and damage the compressor.
Warning
Always wear safety goggles and protective gloves while working with refrigerants
to protect your skin and eye from refrigerant gases or liquid. Avoid getting in touch
with caustic gas or liquid.
2
5
3
SPECIFICATION
6
2
OPERATION MANUAL
11.If the unit is to be stored or not used for any length of time, we recommend
that it be completely evacuated of any residual refrigerant and purged
with dry nitrogen.
12.Connection hose with check valve is recommended, it can prevent
refrigerant lose.
13.The intake port is equipped with lter screen, please wash it frequently
to keep it clean.
14.The One Key Operation switch is not allowed between the positions
( “0” , “1” , “2” , “3” ) , it must point directly to the numbers.
15.If it is dicult to start the unit, please turn the Switch two rounds to
balance the internal pressure and make it easier to start the unit.
16.The Low Pressure Gauge shows the pressure of the intake port of the
compressor and the High Pressure Gauge shows the pressure of the outlet
port of the recovery unit.
17.After using, please turn the knob to “0” position.
the Purge Operation carefully. Liquid refrigerant remained in the unit
may be expanded and destroy the components.
Refrigerants
Power
3/4HP
Oil-less, Air-cooled, Piston
38.5 bar/3850kPa(558psi)
0℃~40℃/32~104°F
Vapor
Liquid
Push/Pull
Category Ⅲ
0.20kg/min
1.60kg/min
4.60kg/min
Category Ⅳ
0.25kg/min
1.80kg/min
5.60kg/min
Category Ⅴ
0.25kg/min
2.20kg/min
6.30kg/min
8A@60Hz
1750rpm@60Hz
110-120 VAC 60Hz
Motor
Motor Speed
Compressor
Recovery Rate
Dimensions
Net Weight
Maximal
Current Draw
High Pressure
Shut-o
Operating
Temperature
Category Ⅲ：R12, R134a, R401C, R406A, R500
Category Ⅳ: R22, R401A, R401B, R402B, R407C, R407D,
R408A, R409A, R411A, R411B, R412A, R502,
R509
CategoryⅤ: R402A, R404A, R407A, R407B, R410A, R507
13.5kg
400mm×250mm×355mm
2
2
OPERATION MANUAL
3
2
OPERATION MANUAL
4
1. Do not mix dierent refrigerants together in one tank, or they could not
be separated or used.
2. Before recovering the refrigerant, the tank should achieve the vacuum
level:-75cmHg(-29.6psi), which is for purging non-condensable gases.
Each tank was full of nitrogen when it was manufactured in the factory,
thus the nitrogen should be evacuated before the rst use.
3. The switch should be at “Position 0” before operation. All the valves must
be closed, the input and output ttings should be covered with protective
caps when the unit is not in operation. The air moisture is harmful to the
recovery result and will shorten the life span of the unit.
4. A lter drier should always be used and should be replaced frequently.
And each type of refrigerant must have its own lter. For the sake of
ensuring the normal operation of the unit, please use the lter specied
by our company. High quality lter drier will bring high quality services.
5. Special-caution is needed when recovering from burnt system, and two
dry lter is needed.
6.The unit has an Internal High Pressure Shut-O Switch. If the pressure inside
the system is above 38.5 bar, compressor will automatically shut o and the
high pressure alarm red light turns on. To restart the compressor, please
decrease the internal pressure and make the High Pressure alarm light turn o
(High pressure shut-o switch reset automatically), then hit the start button,
on the right of panel and trun on the power to restart the compressor.
When High Pressure Protection is initiated, please nd out the cause and
deal with it before restarting the unit.
Cause of High Pressure Protection and Trouble Shooting:
The input valve of the refrigerant tank is closed---open the valve will
help solve the problem.
The connecting hose between the recovery unit and refrigerant tank is
stuck—close all the valves and replace the connecting hose.
The temperature of the refrigerant tank is too high, pressure is too
high—give it some time to cool down and the pressure will come back to normal.
7. The unit has an Internal Low Pressure Shut-of f Switch and delay circuit.
If the pressure inside the system is below-5 inHg~-14 inHg(-12.7cmHg~
-35.5cmHg) for 20 seconds, the unit will automatically shut o and the
Green Alarm Light turns on. When the unit nish recovery and purge operation
and there is no pressure in the intake port, after turn on the power switch
for 20 seconds, the Green Alarm Light turns on. It only can work for 20
seconds if you restart the unit.
When the input pressure is above 0.8 bar(11 psi),the unit will work continuously.
8. In order to gain maximum recover speed, a hose with inner diameter bigger
than 4mm is recommended and the hose should better be shorter than 1.5m.
9. While recovering large amounts of liquid, use the Push/Pull Mode.
(see Push/Pull mode operation on Page12)
10. After recovering, make sure there is no refrigerant left in the unit. Read
①
②
③
9
LIQUID PUSH/PULL METHOD
13 14
10
TROUBLE SHOOTING
6.When the showing of electric scale is not changing or changing very slowly,
it means that the liquid recovery is nished, and it’s time for gas recovery.
(The hoses need to be re-connected and please follow the Purge Operation to
purge the gas refrigerant.)
7.Close the gas valve of the refrigerant tank and then turn the power o.
8.Close all the valves and disconnect all the external hoses. Connect the hoses
according to the Recovery Operation to do the gas refrigerant recovery.
9.Purge.
When the showing of the electric scale show that the refrigerant in the tank reaches
80 % capacity, please turn the power o and close the valves of the tank.
Warning
FAULT
Fan not
revolving
Compressor
don' t work
Compressor
can't start
(Jammed)
Compressor
starts but
stops within
a few
minutes
Low
recovery
speed
Not vacuum
enough
CAUSE SOLUTION
Mechanical damage
1. Shut o by High Pressure
Protection, red light ON
1. External pressure is too high
2. Motor failure or other
component damage
1. High Pressure Protection caused
by mis-operation shuts the unit o
like:
Outlet valve closed, refrigerant
tank valve closed
2. Motor Overload Protection shut
the motor o
3. Recovery nished, green light ON
4.Overload during liquid
recovery process, light
ashes and o
5. Circuit breaker shut o
1. The pressure of the refrigerant
tank is too high
2. Piston ring of the compressor is
damaged
1. Hose connection loosened
2. Leakage of the unit
1. Replace the fan
2. Factory service is needed
1. Lower the pressure of the unit
2. Check the connection
3. Turn the switch two rounds
and stop at position “1”
1.Turn the Switch 2 rounds
and point to position“1”, and
then restart
2.Factory service is needed
1. Read carefully the Operation
Manual and follow the instructions
while operating
2. Give the motor some time to restart
3.Follow the purge Operation
to do the Purging
4.Turn the switch 2 rounds
and stop position “1”while
recovering liquid refrigerant
5.Cool the circut breaker down
and restart after 5 minutes
1. Cool the tank down can help
bringing down the pressure
2. Factory service is needed
1.Tighten the connecting hoses
2. Factory service is needed
4
INTRODUCTION OF OPERATION PANEL
7
5
PARTS DIAGRAM
8
NO.
1
2
3
4
5
6
7
Component
Starting Capacitor
Plugboard
Junction Box Cover
Running Capacitor
Compressor
Copper pipes
Control Valve
NO.
8
9
10
11
12
13
14
Component
Cover
Front Panel
Air-Cool Condenser
Base
Power Supply Cord
Fan Cover
Fan
6
WIRING DIAGRAM
9
7
RECOVERY METHOD
10
ITEM DESCRIPTION
GRAPHICS
CODE
1
2
3
4
5
6
7
8
9
10
XS
SA
FR
M1
SR
C1
C2
ST
TC
HP
Power outlet
Power Switches
Overload protection device
Compressor Motor
Centrifugal switch
Start capacitor
Running capacitor
Motor thermal protectors
Electronic Transformer
High Pressure Switch
1.Turn the Switch to position “1”.
2.Correctly and rmly connect the pipes. (See Connection Drawing)
3.Connect the unit to the right power supply(as shown on the Name Plate),
turn the power on to start the unit.
4.Hit the START button to start the unit.
5.Open the valve of the refrigerant tank.
6.Open the liquid valve of the manifold gauge.
7.Slowly turn the Switch to position “2” for faster recovery.
If compressor impact occurs, turn the Switch to positon “1”;
If the impact still occurs, please slowly turn the switch within the limits
of the yellow area, and the indicating value of Low Pressure gauge begin
to drop, until the impact stops. But the pressure should be above 0,
otherwise the intake port cannot take air.
(About the yellow, please see the knob diagram in page 10)
If the power goes o when the unit is working, and the unit cannot restart,
you can turn the Switch 2 rounds and stop at positon “1”, turn the power
on and hit the Start button to start the unit.
8.When liquid recovery is nished, turn the Switch to position “2” for faster recovery.
9.The unit will automatically stop when recovery is nished, please do the
Purge operation now.
ITEM DESCRIPTION
GRAPHICS
CODE
11
12
13
14
15
16
17
18
19
LP
OFP
d1 d3
d2
TM
SB
CTR
SV
K1
Low-Pressure switch
80% O.F.P.switch
Red indicator
Green indicator
Delayer
Start button
Control module
Solenoid Valve
Relay
①
②
Notice
8
SELF-PURGE METHOD
11 12
9
LIQUID PUSH/PULL METHOD
1.① Do not turn o the power when the “complete”light turn green and unit
stops work, please hit the reset button rst, then turn the switch to
position “3” to start purge.
② If the ultimate vacuum meet your request but the unit is still working,
please turn the switch to position “3” to start purge directly.
2. When reaches the required vacuum, purging ends.
① Close the valve of the refrigerant tank.
②Close the check valve of the connecting hoses.
③Close the liquid valve and gas valve of the manifold gauge.
④ Close the connecting valve between the refrigeration system and the manifold valve.
⑤ Turn the power o, and disconnect all the external hoses.
⑥Cap the intake port and the outlet port.
After each use the unit must be purged, make sure there is no refrigerant left in the
unit. Liquid refrigerant remained may expand and damage the components.
Warning
When recovering liquid refrigerant more than 10kgs, Push/Pull is recommended.
Warning
An electric scale needs to be used together with the recovery unit to monitor
the recover process. The siphon can continue even if the machine was turned
o. You must manually close the valves on the tank and the unit to prevent
overlling.
1.Turn the Switch to position “1”.
2.Correctly and rmly connect the hoses. (See Connection Drawing)
3.Turn the power on and hit the start button.
4.Open the gas valve and liquid valve of the refrigerant tank.
5.Turn the Switch to position “2” to start Push/Pull Mode operation recovery.