Page 1
PCE-RRM 250
REFRIGERANT
RECOVERY MACHINE
OPERATING MANUAL
Page 2
1
GENERAL SAFETY
SECURITY LABELS
Warning
Warning means that mis-operation can lead to body injury.
Notice
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 your better understanding of the security labels in this manual, we have listed
the content of these security labels for your reference.
Warning
Only a qualified technician should operate this recovery unit.
Warning
Before starting the equipment, be sure that it is well grounded.
Warning
While using electrical wire, the wire must be well connected and grounded.
Warning
Only a qualified electrician should do the wire connection according to the technical
standard and circuit diagram.
Warning
Be sure the power is off before examining or repairing the recovery unit.
Warning
If the original power supply cord is damaged, choose carefully for the replacing
one, or you may directly buy from us.
Warning
When the unit breaks down, be sure the power is off before you do any operation.
Warning
Please take power supply and the capacity of your ammeter and electrical wire.
1
GENERAL SAFETY
Warning
Use only authorized refillable refrigerant tanks. It requires the use of recovery
tanks with a minimum working pressure of 40 bar(580psi).Do not overfill the
recovery tank. Tank is full at 80% capacity. There should be enough space for
liquid expansion. Overfilling of the tank may cause a violent explosion.
Warning
An electric scale is needed to prevent overfilling.
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.
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
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.
Notice
The input pressure of the unit should not exceed 26bar(377.1psi).
Notice
The unit need to be laid horizontally, otherwise it will lead to unexpected
vibration, noise or even abrasion.
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.
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OPERATION MANUAL
1.Do not mix different 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 first use.
3.The switch should be at “Position 0”before operation. All the valves
must be closed, the input and output fittings 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 filter drier should always be used and should be replaced frequently
And each type of refrigerant must have its own filter. For the sake of
ensuring the normal operation of the unit, please use the filter
specified by our company. High quality filter drier will bring high
quality services.
5.Special-caution is needed when recovering from burnt system,and two
dry filter is needed.
6.The unit has an Internal High Pressure Shut-Off Switch. If the pressure inside
the system is above 38.5 bar, compressor will automatically shut off. To
restart the compressor, please decrease the internal pressure(High pressure
shut-off switch reset automatically),the compressor will restart
automatically.
OPERATION MANUAL
When High Pressure Protection is initiated, please find out the cause
and deal with it before restarting the unit.
Cause of High Pressure Protection and Trouble Shooting:
①The input valve of the refrigerant tank is closed---open the valve
will help solve the problem.
2 The connecting hose between the recovery unit and refrigerant tank is
tuck-close all the valves and replace the connecting hose.
③The 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.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
8. While recovering large amounts of liquid, use the Push/Pull Mode.
(see Push/Pull mode operation on Page12)
9.After recovering, make sure there is no refrigerant left in the unit.
Read the Purge Operation carefully. Liquid refrigerant remained in the
unit may be expanded and destroy the components.
10.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.
11.Connection hose with check valve is recommended, it can
prevent refrigerant lose.
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OPERATION MANUAL
12.The intake port is equipped with filter screen, please wash it
frequently to keep it clean.
13.The One Key Operation switch is not allowed between the positions
(“0”,“1”,“2”,“3”),it must point directly to the numbers.
14.If it is difficult to start the unit, please turn the Switch two rounds
to balance the internal pressure and make it easier to start the unit.
15.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.
16.After using, please turn the knob to “o” position.
SPECIFICATION
MODEL
PCE-RRM 250
Refrigerants
Category Ⅲ
R12,R134a,R401C,R406A,R500
Category IV:
R22,R401A,R401B,R402B,R407C,R407D,R408A,R409A
,A411A,R411B, R412A.R502.A509
Category
V:R402A,R404A,R407A,R407B,R410A,R507
Power
220-240VAC50-60HZ 110-120VAC 6 0HZ(Single tank)
Motor
3/4HP
Motor Speed
1450rpm@50Hz 1750rpm@60Hz
Maximal Current Draw
4A@50Hz 7A@60HZ
Compressor
Oil-ess, air-cooled, piston
High Pressure Shut-off
38.5bar/3850kPa(558psi)
Category Ⅲ
Category IV
Category V
Recovery
Rate(kg/min)
Vapor
0.20
0.25
0.25
Liquid
1.60 1.80
2.20
Push/Pu
4.60 5.60 6.30
Operating Temperature
0C-40℃/32-104°F
Dimensions 400mmx250mmx360mm
Net Weight
13.5KG
INTRODUCTION OF OPERATION PANEL
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PARTS DIAGRAM
RECOVERY METHOD
1.Turn the Switch to position“1” .
2.Correctly and firmly 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.Open the valve of the refrigerant tank.
5.0pen the liquid valve of the manifold gauge.
6.Slowly turn the Switch to position “2”for faster recovery.
Notice
7.When liquid recovery is finished, turn the Switch to position “2”for faster
recovery.
8.The unit will automatically stop when recovery is finished, please do the
Purge operation now.
①If compressor impact occurs, turn the Switch to position “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.
(A bout the yellow, please see the knob diagram in page 11)
2If the power goes off when the unit is working and the unit cannot restart,
you can turn the Start button to start the unit.
NO.
Component
NO.
Component
Cover
8
Starting Capacitor
2
Front Panel
9
Plug board
3
Air-Cool Condenser
10
Junction Box Cover
4
Base
11
Running Capacitor
5
Power Supply Cord
12
Compressor
6
Fan Cover
13
Copper pipes
7
Fan
14
Control Valve
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8
SELF-PURGE METHOD
1.1 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.
2 Close the check valve of the connecting hoses.
3 Close 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 off, and disconnect all the external hoses.
6 Cap the intake port and the outlet port.
RECOVER
FAST
RECOVER
PURGE
SLOW
OFF
Warning
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.
9 LIQUID PUSH/PULL METHOD
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
off. You must manually close the valves on the tank and the unit to
prevent overfilling.
1.Turn the Switch to position “1”
2.Correctly and firmly connect the hoses. (See Connection Drawing)
3.Turn the power on.
4.0pen the gas valve and liquid valve of the refrigerant tank.
5.Turn the Switch to position“2”to start Push/Pull Mode operation recovery.
HVAC Syetem
Input Output
Vapor
Vapor valve
Filter
Liquid
Liquid valve
Tank
Scale
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LIQUID PUSH/PULL METHOD
6.When the showing of electric scale is not changing or changing very slowly,
it means that the liquid recovery is finished 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 off.
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.
Warning
When the showing of the electric scale show that the refrigerant in the tank
reaches 80%capacity, please turn the power off and close the valves of the tank.
TROUBLE SHO0TING
FAULT
CAUSE
SOLUTION
Fan not
revolving
Mechanical damage
1.Replace the fan
2.Factory service is needed
Compressor
don't work
1.Shut off by High
Pressure Protection
1.Lower the pressure of the unit
2.Check the connection
3.Turn the switch two rounds
and stop at position
“1”
Comuress0
can't star
(Jammed)
1.External pressure is too high
2. Motor failure or other
Component damage
1.Turn the Switch 2 rounds
and point to position
“1”,and then restart
2.Factory service is needed
Compressor
start but
stops within
a few
minutes
1.High Pressure Protection caused
by mis-operation shuts the unit
off like:
Outlet valve closed, refrigerant
Tank valve closed
2.Motor Overload Protection shut
the motor off
3.0verload during liquid
To cover process
4.Circuit breaker shut off
1.Read carefully the Operation
Manual and follow the instructions
while operating
2.Give the motor sometime 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 circuit breaker
down and restart after 5
minutes
Low
BRa
speed
1.The pressure of the
refrigerant tank is too high
2.Piston ring of the compressor
is damaged
1.Cool the tank down can
help bringing down the
pressure
2.Factory service is needed
Not vacuum
enough
1.Hose connection loosened
2. Leakage of the unit
1.Tighten the connecting hoses
2. Factory service is needed
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