N
2
PRO / N2 PRO-1234
REFRIGERANT
RECOVERY & RECHARGING
SYSTEM
OPERATORS MANUAL
TEN Automotive Equipment Limited
www.ten-automotive.co.uk
Version 3.4
Sept 2014
TEN Automotive Equipment Limited
Sept 2014
1: PREFACE
IMPORTANT: It is mandatory in the UK that the Operator
of this Equipment is qualified in accordance with EC802-2006.
Please read this Operators Manual carefully and adhere to
the Safety Precautions at ALL times. Mis-handling of
Refrigerants and improper use of the Equipment &
Accessories may cause serious injury or harm to the
Operator. Damage to the Equipment and Vehicle A/C
System may also occur.
The Model N2 PRO should be used only with R134A
Vehicle A/C Refrigerant Systems.
The Model N2 PRO-1234 should be used only with
R1234YF Vehicle A/C Refrigerant systems.
Recycled Refrigerant (R134A / R1234YF) meets the
required SAE standard. All Interfaces, Software design and
Operation conform to EC802-2006 (MACS) Directive.
1 Version 3.4
TEN Automotive Equipment Limited
Sept 2014
2: INDEX LISTING:
1. PREFACE 1
2. INDEX LISTING 2
3. SAFETY PRECAUTIONS 3
4. WARRANTY 4
5. GLOSSARY OF TERMS 5
6. CONTROL PANEL 5
7. SYSTEM INITIAL SETUP 6
7.1 Adding refrigerant to the work tank (first time) 6
7.2 Printer set-up & operation (optional) 8
8. OPERATION 11
8.1 Recover refrigerant and oil drain 11
8.2 Vacuum A/C system and inject new oil 13
8.3 Recharge A/C system 14
8.4 Hose recovery and system self cleaning 16
8.5 Adding refrigerant to work tank 17
8.6 Fully automatic operation 18
9. ROUTINE MAINTENANCE 25
9.1 Checking the capacity of the filter-drier 25
9.2 Changing the filter-drier 26
9.3 Checking the vacuum pump oil usage 28
9.4 Replacing vacuum pump oil 29
10. SPECIFICATIONS 32
11. SPARE PARTS LIST 33
12. CONTACT INFORMATION 33
2 Version 3.4
TEN Automotive Equipment Limited
Sept 2014
3: SAFETY PRECAUTIONS
WARNING !! When handling Refrigerant, avoid skin contact; the low boiling temperature of
refrigerant (-30°C) can cause freezing. Contact with refrigerant may cause frostbite, blindness
and other serious personal injury.
IMPORTANT !! At all times it is recommended to wear suitable personal protective
equipment PPE (Overalls, Safety Glasses/goggles and Gloves).
We recommend that this equipment is used by trained personnel only, who understand the
basics of cooling systems, refrigerants and possible damage that pressurized equipment may
cause. It is mandatory in the UK that the Operator is qualified in accordance with EC802-2006.
Carefully read the instructions contained in this manual and strictly adhere to the procedures
described. This is paramount to Operator safety.
The equipment must always be used under the Operator’s control.
Do not operate the unit with any refrigerant other than the one it has been designed for. (i.e.
R134A or R1234YF).
Before each new vehicle connection, ensure that the LP & HP hoses have been previously
evacuated and that zero pressure is shown on both gauges.
Avoid breathing refrigerant vapours. Only operate the unit in well ventilated areas, do not use
while working in a vehicle inspection pit.
Do not operate near open flames and hot surfaces. High temperatures cause refrigerant to
decompose, releasing hazardous toxic and caustic substances.
Always connected the unit to a 3 pin, protected and suitably earthed, mains 240vAC supply.
Use of trailing sockets and extension leads are not recommended.
Before connecting and disconnecting the unit, ensure that any programmed operation cycle has
been completed and that all valves are closed to avoid release of refrigerant to the atmosphere.
Never fill any tank, internal or external, with liquid refrigerant to more than 75% of maximum
capacity.
Avoid spillage and dripping. Clean and mop up excess fluids.
IT IS ILLEGAL to charge a system with refrigerant, to check for leaks. Always use (Oxygen
Free) Nitrogen for this purpose during the appropriate programmed operation cycle.
Back to Index
3 Version 3.4
TEN Automotive Equipment Limited
Sept 2014
4: WARRANTY
CERTIFICATE OF WARRANTY
TEN Automotive Equipment Limited hereby declare to warrant the N2 PRO / N2
PRO-1234 product to be free from defects in material and manufacture for a period of 12
months from the date of purchase. During this period such defective components will be
replaced without charges for “Callout” or “Labour” with the exception of instances
referred to as Disclaimers and Exclusions or the unit is purchased and/or operated outside
the United Kingdom.
DISCLAIMER AND EXCLUSIONS:
Charges for Callout, Labour, Calibration and, where applicable, replacement components
or materials will be levied, at the prevailing rates, whereby:-
1: The defect or condition of the equipment is a product of neglect, improper use,
lack of routine operator maintenance, vandalism, accident, fire, flood or Act of
God.
2: Consumable items such as Printer Rolls, Cables, External Hoses and Quick
Coupler Connectors, Oil/Drain Bowls and Drier/Filters are replaced.
3: Attempted repairs or adjustments by any person or Company not authorized or
recognized by TEN Automotive Equipment Limited
4: If the authorized representative of TEN Automotive Equipment Limited has been
refused, or is unable to access the equipment between the hours of 09:00 hrs to
17:30 hrs, Monday to Friday inclusive. In order to follow up a “Request for
Service” under the Warranty Agreement.
5: If the Equipment has not been serviced or calibrated by an Authorized
Representative of TEN Automotive Equipment Limited at a prearranged interval
necessary to comply with an EU Directive or any other Approval Body
mandatory requirement.
6: If TEN Automotive Equipment Limited is not afforded the opportunity to
diagnose or rectify the fault or condition through simple diagnostic routines or
instruction, by telephone, to the operator or owner of the equipment.
Back to Index
4 Version 3.4
TEN Automotive Equipment Limited
Sept 2014
5: GLOSSARY OF TERMS
SYSTEM - N
recharging equipment.
SOURCE TANK - A refillable tank with new refrigerant used for topping up the
ELECTRONIC SCALES - Measures the weight of the Work Tank refrigerant.
WORK TANK - Refillable refrigerant internal storage tank inside the system. It is
2
PRO or N2 PRO -1234 refrigerant recovery, recycling and
internal Work Tank.
used to store refrigerant during recovery, and to recycle recovered
refrigerant to SAE standard. The tank has three outlets, gas outlet,
liquid outlet and air discharge outlet.
6: CONTROL PANEL
Note: Some models have the Printer mounted on the top of the cabinet.
Back to Index
5 Version 3.4
TEN Automotive Equipment Limited
Sept 2014
7: SYSTEM INITIAL SETUP
Before using the System for the first time the system initial setup is must be completed. The
main purpose of the initial setup is:
1）To ensure Vacuum Pump oil level is correct.
2）To remove Nitrogen in the Work Tank and the system.
3）To prime Work Tank with fresh refrigerant.
4）Printer Set-up and Operation (Optional)
Back to Index
7.1 Adding Refrigerant to Work Tank (first time)
STEP OPERATION
1
2
3
OPERATING
INSTRUCTION
Turn the power switch on.
Ensure Vacuum pump oil level is
sufficient.
Oil should be at the indicated level
of sight glass on Vacuum Pump.
Press START key to begin the
initialization process The screen will
flash: PLEASE WAIT.
If used for the first time the system
will automatically remove Nitrogen
in the Work Tank and internal system.
This will take about 4 minutes and the
system will finish the initialization
process automatically.
SCREEN DISPLAY
CLEAR
PLEASE WAIT
PLEASE WAIT
4
After the initialization process, the
system will automatically display:
WEIGHT xx.xx (or System Standby
mode). Now new refrigerant needs to
be added to the Work Tank.
6 Version 3.4
WEIGHT 00.00 kg
TEN Automotive Equipment Limited
Sept 2014
5.
6
7
1. Connect the low pressure male
adaptor to the refrigerant source
tank.
2. Connect the low pressure “quick
coupler” to the male adaptor.
3. Open source tank valve and Blue
“quick coupler” valve.
4. Press the Recover Key
Press the START key to begin the
refrigerant filling process.
Please ensure that Source tank and
blue quick coupler valves are open.
When adding refrigerant to Work
Tank the displayed amount will
increase.
Note: Turn source tank upside down
to increase flow, if required.
RECOVER 10.00 kg
Note: 10.00kg is the amount of
refrigerant that the Work Tank
can contain.
If male adaptor is not available
use a suitable alternative
coupling to connect low pressure
hose to source tank.
RECOVER 00.00 kg
RECOVER xx.xx kg
8
9
Suggested weight of refrigerant
adding to Work Tank for the first
time is 3 to 4 kg.
IMPORTANT: When the displayed
weight is approximately 3 to 4 kg,
close source tank valve and blue
quick coupler valve.
DO NOT PRESS STOP BUTTON !!
When pressure decreases to 0 PSI,
system will automatically complete
recovery process.
The screen will display the weight of
the refrigerant added to Work Tank
and then enter the drain A/C system
oil process.
Wait for 10 seconds, system will
automatically drain the A/C system
oil separated from refrigerant.
RECOVER xx.xx kg
IMPORTANT: When filling the
Work Tank DO NOT LEAVE
THE SYSTEM UNATTENDED.
ALWAYS TURN OFF SOURCE
TANK VALVE FIRST !!
RECOVER xx.xx kg
DRAIN OIL
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Sept 2014
Connect quick coupler to its
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1、 Draining oil takes about 10
seconds and after the process
will stop automatically.
2、 Check oil level in the drain oil
DRAIN OIL
bottle, when oil has finished
draining out, press STOP to exit.
System enters into System Standby
1. xx.xx kg is the weight of the
refrigerant in the Work Tank.
2. Turn Source Tank off and
WEIGHT xx.xx kg
Remove Blue quick coupler.
3.
holding port on side of unit.
Initial set up is now complete.
IMPORTANT: For the normal operation of the system, the weight of the refrigerant in the
Work Tank should not be less than 2.5kg.
Back to Index
7.2 Printer set-up and operation (optional)
STEP OPERATE
1
2
3
OPERATING
DESCRIPTION
Turn the power switch on.
Now the system enters into system
self-checking state. Program
software version is displayed.
After 3 seconds, the system will
display:
Input Company Name:
at System Standby;
Key input code: 6845
DISPLAY CONTENT
VERSION x.xx
WEIGHT xx.xx kg
Co.
8 Version 3.4
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Sept 2014
Enter Company Name using
TEN Automotive Equ
4
5
6
and keys to change
between upper and lower-case.
Press to delete character.
After imputing Company Name,
press START to confirm. The
Company name will be stored.
Input Company Telephone No:
At System Standby;
Key input code: 6302
Enter Company Telephone number;
Note: Max. 36 Characters.
Keyboard operation is similar to that of
a mobile phone.
WEIGHT xx.xx kg
Tel:
7
8
9
use to delete.
After input, press START to
confirm, Company Telephone
number will be stored.
OPERATION:
Press PRINT, The screen will
alternately show Technician and
name of the previous Technician (if
applicable).
1、 If you wish to use the
Technician name already in
memory, please go to step 11.
2、 To input or change the name of
the technician, please go to next
step, the new name will be
saved.
01553 764900
WEIGHT xx.xx kg
Technician:
XXXXXX
9 Version 3.4
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Sept 2014
Input name of Technician:
Use and to change
10
between upper and lower-case.
XXXXXX ----
Use to delete.
Press START
The screen will show Vehicle Reg:
1. If you don’t wish to input
Vehicle Reg:
--------
11
vehicle registration number,
please go to step 13.
2. If you want to print vehicle
registration number, please
carry out next step.
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13
Note: this number will not be saved.
Input Vechicle Registration number:
(if required)
Use and to change
between upper and lower-case.
Use to delete character.
After input, press START to print.
Note: If you wish to print a
duplicate report, press PRINT again.
IMPORTANT:
--------
PRINT OK
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If you press STOP, previous
recorded information will be deleted
10 Version 3.4
WEIGHT xx.xx kg
TEN Automotive Equipment Limited
Sept 2014
8: OPERATION
8.1 Recover refrigerant and draining A/C system oil
STEP OPERATION
1
2
3
OPERATING
INSTRUCTION
Turn mains power switch on.
Now the system enters into system
self-checking state and displays
software version.
After 3 seconds, the system will
display the weight of refrigerant in
the Work Tank.
Connect red and/or blue quick
couplers to high and low pressure
hoses of the vehicle A/C system
and open coupler valves.
IMPORTANT: Check gauges for
vehicle A/C operating pressure.
If zero pressure is displayed then
check the vehicle A/C system for
leaks first.
Note: The VACUUM HOLD test
is a visual check using the Gauges
to look for vacuum decay. It is
recommended that the Nitrogen
Pressure Test is used for leak
detection.
SCREEN DISPLAY
VERSION x.xx
WEIGHT xx.xx kg
WEIGHT xx.xx kg
Press RECOVER key to enter into
recovery procedure.
4
xx.xx kg is reading of headroom
left in Work Tank.
Press the START key to begin
5
recovery. When the pressure in the
vehicle A/C system is lower than 0
kpa, the system will automatically
complete recovery process.
11 Version 3.4
RECOVER xx.xx kg
RECOVER xx.xx kg
TEN Automotive Equipment Limited
Sept 2014
The screen will display the weight
of the refrigerant added to Work
RECOVER xx.xx kg
DRAIN OIL
6
Tank and and then enter the drain
A/C system oil process.
Wait for 10 seconds, system will
automatically drain the vehicle A/C
system oil separated from
refrigerant.
1. Draining A/C system oil takes
about 10 seconds then stop
automatically.
2. Check level in the drain oil
bottle, when oil has finished
draining the program will
DRAIN OIL
7
automatically stop.
3. The amount of oil drained this
time should be noted.
You will be prompted to add A/C
system oil after vacuuming is
complete. Add the required
amount specified by the vehicle
manufacturer.
8
Press the STOP key to go back to
System Standby.
WEIGHT xx.xx kg
IMPORTANT:
The recommended filter-drier capacity of this system is 68kg, when recovered refrigerant
weight reaches this point the display will read:
Now filter-drier is no longer effective, and needs to be replaced otherwise damage may occur.
(Please refer to 9.2 for details).
The self-cleaning procedure will recover the refrigerant in the service hose into the Work
Tank. This process will ensure the measurement accuracy of refrigerant. Back to Index
12 Version 3.4
CHANGE FILTER
TEN Automotive Equipment Limited
Sept 2014
8.2 Vacuum A/C system and inject new oil
STEP OPERATION
1
2
OPERATING
INSTRUCTION
Turn the power switch on
System Standby will display
after 3 seconds.
IMPORTANT:
If the pressure in the vehicle A/C
system is higher than 0kpa, screen
will display HIGH PRESSURE.
The operator should check the
Gauges to confirm system pressure.
It is recommended that the operator
repeats the recovery process.
After the recovery process has
automatically completed the
pressure should be zero and the
vacuuming process can then be
carried out normally.
SCREEN DISPLAY
WEIGHT xx.xx kg
PRESSURE IN HOSE
VACUUM 15:00
3
4
5
Press Number keys to set
Vacuum time.
Press the START key to begin
the vacuuming process.
Vacuum process (and LP Keeping if
selected) is complete.
Ensure the correct and sufficient oil
is in the INJECTED OIL bottle.
Press OIL button to inject the
amount of new oil required for the
vehicle’s A/C system.
VACUUM xx.xx
INJECT OIL
INJECT OIL
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1. After finishing oil injection,
press STOP to enter into System
Standby.
2. Check pressure gauge to see if
6
vehicle A/C has any leakage, if
required.
WEIGHT xx.xx kg
3. Now press the CHARGE key to
charge refrigerant to the vehicle
A/C system.
IMPORTANT:
1) If the vacuum pump running time accumulates to 1000 minutes, the system will
display: CHANGE OIL.
CHANGE OIL
The vacuum pump oil should be replaced.
Please refer to section 9.4 for details. If vacuum pump oil is not replaced at the
recommended time, the vacuum pump may incur damaged.
2) If A/C system pressure is higher than 50kpa (0.5kg), do not vacuum vehicle A/C
system otherwise the vacuum pump may incur damaged.
8.3 Recharging A/C systems
STEP OPERATION
1
1. Press CHARGE key to enter into
refrigerant recharging procedure.
2. Use value keys to set the weight of
the refrigerant, specified by the
vehicle manufacturer, to charge the
vehicle’s A/C system.
Note: The Work Tank must contain at
least 1.2kg more than the charge weight
entered. If not, the error message TANK
EMPTY? will be displayed.
OPERATING
INSTRUCTION
SCREEN DISPLAY
TANK EMPTY?
Back to Index
Press STOP to exit program and add
refrigerant to Work Tank (Refer to 8.5).
14 Version 3.4
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2
3
4
5
1. Press CHARGE key to enter into
refrigerant recharging procedure.
2. Use value keys to set the weight of
the refrigerant needed to be
recharged to vehicle A/C system.
Select charging port. For low pressure
charge (default) press START to
confirm, or press “up” or “down” keys
(▲or▼) to select high and/or low
pressure charge port mode.
After selecting high and/or low pressure
charge mode, press START to confirm.
Press START to begin the
refrigerant recharging procedure.
CHARGE 00.90kg
LP CHARGE
LP. HP CHARGE
CHARGE 00.00kg
6
7
When refrigerant recharging reaches the
set value weight the System will stop
automatically and indicates the charge
amount result at the same time.
Press the STOP key for 3 seconds to end the
recharging process and return to System
Standby.
Start the Vehicle A/C system; check the high
and low pressure gauges to see if the readings
are normal.
Close “quick coupler” valves and
recover refrigerant from hoses.
Disconnect high and low quick
couplers.
IMPORTANT: Do not exit the
program or press stop during hose
refrigerant recovery procedure.
CHARGE xx.xx kg
CHARGE COMPLETE
WEIGHT xx.xx kg
15 Version 3.4
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TANK EMPTY
IMPORTANT:
If the system displays TANK EMPTY when you press
the CHARGE key then there is insufficient refrigerant in the Work Tank to charge the vehicle
A/C system. Press the STOP key to exit the recharging process and add refrigerant to the
Work Tank. (Refer to section 8.5 for details).
Back to Index
8.4 Hose recovery and system self-cleaning
STEP OPERATION
1
2
3
OPERATING
INSTRUCTION
Turn the power switch on.
From System Standby:
1. Make sure that high and low
quick couplers are not connected
to vehicle.
2. Ensure that the high and low
quick coupler valves are closed.
Press the RECOVER key to enter
into recovery procedure.
xx.xx kg is reading of “headroom”
left in Work Tank.
Press the START to begin hose
recovery or self-cleaning.
Check pressure gauge
When the pressure is lower than
0kpa, system will automatically
complete the process.
SCREEN DISPLAY
WEIGHT xx.xx kg
RECOVER xx.xx kg
RECOVER xx.xx kg
4
5
The screen will display the weight of
the refrigerant recovered from hoses
and proceed to discharge old A/C
system oil and contaminants.
When Drain Oil is complete press
STOP key down for 3 seconds to go
back to System Standby. Hose
recovery and system self-cleaning is
complete.
16 Version 3.4
RECOVER xx.xx kg
DRAIN OIL
WEIGHT xx.xx kg
TEN Automotive Equipment Limited
Sept 2014
8.5 Adding refrigerant to work tank
STEP OPERATION
1
2
OPERATING
DESCRITION
Turn the power switch on.
Now the system enters into system
self-checking state and displays
software version.
1、Connect the Low Pressure male
adaptor to the refrigerant source
tank
2、Connect the low pressure “quick
coupler” to the male adaptor
3、Open source tank valve and blue
“quick coupler” valve
4、Turn source tank upside down to
increase flow, if required.
Press RECOVER key to enter into
refrigerant adding procedure
SCREEN DISPLAY
VERSION: x.xx
WEIGHT xx.xx kg
3
4
xx.xx kg is the amount of refrigerant
headroom the Work Tank can
contain.
1. Press START to begin the
refrigerant top up process.
Suggested weight of refrigerant
stored in Work Tank is 3 to 4 kg.
IMPORTANT: When the displayed
weight is approx 3 to 4 kg close the
source tank valve and blue quick
coupler valve.
DO NOT PRESS STOP BUTTON
When pressure decreases to 0 PSI
the system will automatically
complete recovery process.
RECOVER xx.xx kg
RECOVER xx.xx kg
IMPORTANT: When filling
the Work Tank DO NOT
LEAVE THE SYSTEM
UNATTENDED. ALWAYS
TURN OFF SOURCE TANK
VALVE FIRST !!
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5
6
7
1. The screen will display the
weight of the refrigerant
transferred to the Work Tank
and and then enter the drain oil
process.
2. Wait for 10 seconds, the system
will automatically drain any
A/C system oil or contaminants
separated from the refrigerant.
1. Draining oil takes about 10
seconds and after it will stop
automatically.
2. Check oil level in the drain oil
bottle and empty if required.
Press the STOP to return to System
Standby.
RECOVER xx.xx kg
DRAIN OIL
DRAIN OIL
WEIGHT xx.xx kg
8.6 Fully Automatic Operation
STEP OPERATION
1
2
OPERATING
DESCRITION
Turn the power switch on.
Now the system enters into system
self-checking state and software
version is displayed.
After 3 seconds, the system will
display amount of refrigerant in Work
Tank.
Connect Red and Blue quick couplers
to high and low pressure ports of the
vehicle A/C system and open coupler
valves.
If Applicable; connect N2 hose
(yellow) to the Nitrogen source
cylinder. Open Nitrogen source
valve. The Nitrogen pressure should
be greater than 10 bar or the system
will not be able to function.
Back to Index
SCREEN DISPLAY
VERSION x.xx
WEIGHT xx.xx kg
IMPORTANT:
Ensure the INJECTED OIL
bottle should contain no less
than 30ml of the correct oil.
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3
4
5
6
Press START, to program the
function sequence selection.
Note: The Fully Automatic sequence
of operating functions may now be
programmed using the number keys
0 through to 7.
Please refer to function chart below
keypad on unit front panel.
Press number key 1. Recovery
function will be chosen.
Press number key 1 again; Recovery
function will be cancelled.
Press number key 2. Nitrogen
pressure test will be selected.
Press number key 2 again; nitrogen
pressure test will be cancelled.
Press number key 3. Vacuum
function will be chosen.
Press number key 3 again; vacuum
function will be cancelled.
Press number key 4, vacuum hold
time will be chosen.
SELECT FUNCTION
R
R-N2
R
R-N2-V
R-N2
R-N2-V-VH
7
8
9
Press number key 4 again; vacuum
hold will be cancelled.
NOTE: This is a Pressure Gauge
Check only.
Press number key 5. Oil Injection
will be selected.
Press number key 5 again; Oil
Injection will be cancelled.
Press number key 6. High and low
pressure port refrigerant charging
will be selected.
Press number key 6 again; high and
low pressure refrigerant charging will
be cancelled.
R-N2-V
R-N2-V-VH-I
R-N2-V- VH
R-N2-V- VH -I-C
R-N2-V- VH -I
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10
11
12
Press number key 7. Low pressure
port only refrigerant charging will be
selected.
Press number key 7 again; low
R-N2-V-VH -I-LC
R-N2-V-VH -I-
pressure port charging will be
cancelled.
If you want to exit all the above
chosen functions, press STOP to go
back to Select Function mode, and
press START to return to system
standby mode.
To confirm the selected functions,
press START.
SELECT FUNCTION
WEIGHT xx.xx kg
To enter into vacuum time set, and
press number keys to set vacuum
time value. Then press START.
VACUUM 30:00
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15
To enter the amount of oil to recharge
set charging weight by number keys.
NOTE: Set the amount to 00ML if
you wish to enter the amount of oil
equal to the amount of drained oil
prior to INJECT OIL
To enter the amount of refrigerant to
recharge set charging weight by
number keys.
IMPORTANT:
The Work Tank must contain at least
1.2kg more than the charge weight
entered. If not the error message
TANK EMPTY? Will be displayed.
Press STOP to exit program and add
refrigerant to Work Tank (Refer to
4.5).
OIL 10ML
CHARGE 00.90kg
TANK EMPTY?
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17
18
19
Press START to enter into setting
vacuum hold time, setting keeping
time by number keys.
VAC HOLD 3:00
Important Note: For indication
purposes only. Check Low Vacuum
Gauge for excessive Vacuum Decay.
Use N2 Leak Test for normal Leak
Testing.
Press START key to enter into N2
leakage detecting time set up.
Use value keys to set N2 leakage
detecting time needed.
IMPORTANT: Check gauges for
vehicle A/C operating pressure
then press START.
If zero pressure is displayed then
press STOP for 3 seconds to exit
the automatic program sequence.
Check the vehicle A/C system for
leaks first.
Press START, System will recycle
rest refrigerant from vehicle A/C
system automatically. When the
recycling pressure is lower than 0
kpa, System will stop recycling
automatically, and enter into next
programmed operation.
N2 LK TEST 15:00
RECOVER xx.xx kg
RECOVER xx.xx kg
20
After recovery is automatically
completed, system will automatically
enter into oil draining process. Screen
will display the weight of refrigerant
recovered this time and show that the
program has entered the drain oil
function.
21 Version 3.4
RECOVER xx.xxkg
DRAIN OIL
TEN Automotive Equipment Limited
Sept 2014
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If N2 has been selected then after the
recovery and oil draining, the system
will automatically enter into N2
charging process. When pressure of
N2 charged into air conditioner of
vehicle reaches the set value (10bar),
N2 charging process will be
completed automatically, and system
will automatically enter into high
pressure leakage detecting process.
After N2 charging process is
automatically completed,
1. Within set time, System will
check the leakage for vehicle
A/C system. Press STOP to
pause the countdown and enter
into manual leakage checking
procedure.
2. Press START to continue
checking leakage automatically.
Note:
1. Press STOP to pause the
countdown to manually check
for leaks.
2. Press START to continue
leakage checking countdown.
N2 CHARGING
N2 LK TEST 15:00
N2 LK TEST 15:00
24
Important Note: If 400mbar pressure
decay is detected when the preset
time is reached the System will
display LEAKAGE, and an audible
warning will send out
simultaneously.
Press START to cancel audible
warning.
Press STOP to discharge and exit
Nitrogen pressure test program.
LEAKAGE
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26
27
Important Note:
Please allow 90 seconds for the N2
exhausting process to complete.
During this time the system is not
operable. This is to ensure complete
exhausting of N2 from the system.
Note: If you press STOP during N2
exhausting process, the System will
exit the automatic program and not
carry out the other programmed
functions (i.e. vacuum, oil injection
and charging processes).
System will automatically enter into
Vacuum procedure according to
program setting. Vacuum time is
preset by the operator.
EXHAUSTING
EXHAUSTING
VACUUM xx.xx
28
29
30
31
System will enter into vacuum hold
procedure according to program
setting automatically, vacuum hold
time is set time. Note: This is a
Pressure Gauge Check only.
System will automatically enter into
Oil Injection procedure.
System will inject oil approximately
to the pre-set amount. NOTE: If the
initial amount was set to 0ML then
enter the amount of oil to inject at
this point.
System will automatically enter into
refrigerant charging procedure. The
amount of refrigerant is the preset by
the operator.
VAC HOLD 3:00
INJECT OIL
INJECT xx ML
CHARGE xx.xx kg
32
When charging refrigerant reaches
preset weight, the System will
display CHARGE COMPLETE.
23 Version 3.4
CHARGE xx.xx kg
CHARGE COMPLETE
TEN Automotive Equipment Limited
Sept 2014
WEIGHT xx.xx kg
33
Press down STOP key and hold for 3
seconds to return to System Standby.
Start Vehicle A/C system; check the
high and low pressure gauges to see
if the readings are normal.
Close “quick coupler” valves and
recover refrigerant from hoses.
Disconnect high and low quick
couplers.
IMPORTANT: Do not exit the
program or press stop during hose
refrigerant recovery procedure.
Important Notes:
1. Every function in Automatic Mode has safety pressure detection. Such as: Recycling,
Nitrogen Test, Vacuum and Recharge.
2. If the Operator selects Recharging and Oil Injection, the Operator must also choose the
Vacuum function simultaneously, otherwise, Oil Injection will not complete. Likewise,
when carrying out Vacuuming the Operator should select the Recover function
simultaneously, to ensure the system pressure is not higher than 50kpa; otherwise
damage may occur to the vacuum pump.
3. If the Operator selects LP keeping function then the Vacuum function must also be
selected. We recommend a minimum of 40 minutes Vacuuming if checking for Vacuum
decay (LP Keeping)
4. If there is pressure in the vehicle A/C system and the Operator selects the Vacuum
function together with any other functions, we recommend that the Recovery function is
ALWAYS selected as well as this will prevent damage to the vacuum pump.
5. In Automatic Mode every single function can be linked together according to servicing
and repair requirements of vehicle A/C system.
6. When changing between different Injected Oil types ensure the system has fully
recovered from the hoses and that there is no residual oil in the Injected Oil bowl feed
pipe. This may cause damage to some A/C Systems especially if they are electrically
powered.
7. Note: The amount of Oil injected automatically is approximated to take into
account the losses due to the length of the Red/Blue connection hoses.
8. Always check the gauges for normal operating pressure when first connecting to the
vehicle A/C system. LP Keeping and the Nitrogen Test are not usually required if the low
and high gauges show normal operating pressure with the vehicle A/C system running.
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9: ROUTINE DAILY MAINTENANCE
9.1 Checking the capacity of the filter-drier
STEP
1
2
3
OPERATION
OPERATING
DESCRITION
1. At System Standby, press MENU
to enter into system organizing
procedure
2. xx.xx kg represents the weight of
the refrigerant the filter-drier has
filtered.
Please note after 68Kg the filter -drier
becomes less effective and requires
replacement.
Filter-drier requires replacement.
Press STOP to enter into System
Standby.
SCREEN DISPLAY
FILTER xx.xx kg
CHANGE FILTER
WEIGHT xx.xx kg
Note: It is possible to temporarily override the CHANGE FILTER error message by
pressing START, then 3, then START again.
Back to Index
25 Version 3.4
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Sept 2014
9.2 Changing the filter-drier
STEP
1
INSTRUCTION
1) Carry out 4.4 System self-cleaning, wait until it is complete.
2) Switch the unit off and isolate mains.
3) Most Models of N2Pro have a Filter Drier access panel on the side of the
unit. Remove access panel to change Filter-drier.
NOTE: Please follow procedure below for Models of N2Pro which do not
have the access panel fitted:
2
3
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Enter the 4 digit reset code ****
4
5
1. Replace cover and switch unit
on. From System Start, press the
MENU key to enter into system
6
7
8
maintenance option menu.
2. xx.xx kg represents the original
value of the filter-drier.
1. Press “up” key △ to proceed to
CHANGE FILTER
2.
Press START key
Press STOP to enter into System
Start.
Now new filter-drier value is reset to
zero.
FILTER xx.xx kg
CHANGE FILTER
WEIGHT xx.xx kg
Back to Index
9.3 Checking the vacuum pump oil usage
27 Version 3.4
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STEP
1
2
3
4
OPERATION
OPERATING
DESCRITION
At System Standby, press MENU
key to enter into system maintenance
procedure
Press “up” key △ until till the screen
displays:
xxx MIN represents the accumulated
vacuum pump working time.
Please note that it is the
Manufacturer’s recommendation that
the Vacuum Pump Oil is changed
after 1000 minutes use.
Change Vacuum Pump Oil (Step 5.4)
using the correct oil.
Press STOP key to go back to System
Start.
SCREEN DISPLAY
FILTER xx.xx kg
OIL xxx MIN
CHANGE OIL
WEIGHT xx.xx kg
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28 Version 3.4
TEN Automotive Equipment Limited
Sept 2014
9.4 Replacing vacuum pump oil
STEP
1
OPERATING DESCRITION
1) Carry out 4.2 Vacuum A/C system. Vacuum time should be set to 2
minutes, wait until it countdown is complete.
2) Switch off the unit and change vacuum pump oil as follows:
2
3
Note: Some Vacuum Pumps have a combined Air & Oil Inlet
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4
5
6
7
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Enter the 4 digit reset code ****
.
FILTER xx.xx kg
8
Switch on unit. At System Start, press
the MENU key to enter into system
maintenance procedure.
Press Menu key then the “up” key △
until display shows:: OIL xxx MIN.
9
This represents the previous
accumulated vacuum pump work
OIL xxx MIN
time.
Press “up” key △ again until display
shows: CHANGE OIL.
CHANGE OIL
10
Only if vacuum pump oil has been
renewed:
1.
2. Press START
1. Press STOP key to enter into
WEIGHT xx.xx kg
11
System Start.
2. Now vacuum pump usage counter
is reset.
Note: It is possible to temporarily override the CHANGE OIL error message by pressing
START, then 4, then START again.
VACUUM PUMP OIL:
This special type of pump oil is strongly recommended since it is specially mixed to ensure
viscosity of the oil stays at the maximum at the normal operation temperature of the pump
and for start up of the pump at the low temperature.
IMPORTANT:
The system should be checked and maintained periodically, by qualified personnel and in
accordance with prevailing EU Environmental Laws
Back to Index
31 Version 3.4
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10、SPECIFICATIONS:
Models:
Recover rate
Vacuum speed
Charge rate
Electronic balance sensitivity
Work tank capacity
Capacity of filter-drier refrigerant
Connection port type
N2 PRO, N2 PRO-1234
5.0g/S
2.0L/S
26g/S
±10g
10kg
68kg
R134A (Model: N2 PRO),
R-1234YF (Model: N2 PRO-1234).
Back to Index
32 Version 3.4
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11、SPARE PARTS LIST:
* IMPORTANT: Part Numbers listed with -1234 suffixes are specific to model N2PRO-1234 only.
（PART NO.） (NAME)
AC 1906 POWER SWITCH (Rotary)
AC 1909 POWER CORD (5m)
AC 1912 DRAIN OIL BOWL
AC 1913 INJECT OIL BOWL
AC 1921 HIGH PRESSURE HOSE (RED – Long 500cm)
AC 1922 LOW PRESSURE HOSE (BLUE – Long 500cm)
AC 1923-Y N2 CONNECTION HOSE (YELLOW–Long 500cm)
AC 1924 HIGH PRESSURE QUICK COUPLER (RED)
AC 1925 LOW PRESSURE QUICK COUPLER (BLUE)
AC 12346 HIGH PRESSURE HOSE (RED – Long 500cm)
AC 12347 LOW PRESSURE HOSE (BLUE – Long 500cm)
AC 1924-1234 * HIGH PRESSURE QUICK COUPLER (RED)
AC 1925-1234 * LOW PRESSURE QUICK COUPLER (BLUE)
AC 3000 THERMAL PAPER ROLL ( 3 Pack)
AC 3001 FILTER DRIER
AC 3002 VACUUM PUMP OIL (1 litre)
Back to Index
12、CONTACT INFORMATION:
TEN Automotive Equipment Limited
Lubeck Road
North Lynn Ind Est.
KINGS LYNN
Norfolk PE30 2JE
Tel: + 44 (0)1553 764900
Fax: +44 (0)1553 770002
www.ten-automotive.co.uk
Back to Index
33 Version 3.4
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