![NAVAC MASTER Series Скачать руководство пользователя страница 8](http://html2.mh-extra.com/html/navac/master-series/master-series_user-manual_3536389008.webp)
Empowering you to work smarter
NA
Yf
AC
OPERATING INSTRUCTION
4). Liquid push/pull mode
A Notice
A digital scale is needed to monitor the
recover process to prevent overfilling.
Vapor valve
r-:::;:====:::::,,.,�
QDII
liquid valve
____,_ ___ am
Liquid valve
lopen(2)
Refrigerant
equipment
( NRDC4M )
Refrigerant tank
Use NVR1 valve core removal for faster recovery speed.
Ready for operation
Connect the hoses correctly and firmly.
( Please refer to the connection diagram)
Make sure all valves are closed.
Start operation
1.Open the vapor valve, liquid valve of the HVAC system.
2.0pen the vapor valve, liquid valve of the tank.
3.Press "START" button to start machine, then ii starts liquid
push/pull mode.
4.Tum the knob to "Recover".
If the reading on the scale keeps the same or changes
slowly, it means liquid in HVAC system has been
recovered and vapor recovery mode can be underway.
12
5.Turn the knob slowly to "Purge" and start self purging
mode for the liquid.
6.Turn the knob to "Close".
7 .Close the vapor valve, liquid valve of the HVAC system.
8. Close the vapor valve, liquid valve of the tank.
9.Reconnect the hoses and start recovery mode for the
vapor.
Finish operation
Empowering you to work smarter
NA
Yf
AC
TROUBLE SHOOTING
PROBLEM
LCD does not
work after
power is on
Machine does
not run after
pressing START
Machine stops
after running a
period of time
CAUSE
1. Power cord is damaged.
2. Inner connection is loose.
3. Connect to J6 is damaged.
4. Malfunction of circuit board.
1. HP Cutoff, or OFP Cutoff works
(screen shows)
2. Fault 2 or Fault 3
3. Fault 4 or Fault 8, over load
4. Fault 5
5. Fault6
6. Fault 7 or Fault 12
7. Fault g or Fault 10
8. Fault 11
9. Button is damaged
10. Circuit board is damaged
1. Misoperation causes HP Cutoff.
2.
Thermal protector is on and shows
Fault 7.
3. Refrigerant is 80% in the tank, and
O.F.P Cutoff shows.
4. Recovery work is finished. LP
Cutoff shows.
E1 shows at LP Pressure sensor is not connected well
or HP
or is short circuit.
SOLUTION
1. Replace cord.
2. Check the connection.
3. Replace the connect.
4. Replace MCB or DCN circuit board.
Contact NAVAC techsupport.
1. Check if the connection between
HP or OFP to DCB is good.
2. Adjust to correct voltage.
3. Turn knob to close. Press START.
4. Check if the connection between TS
and MCB is good. If good, contact
NAVAC techsupport.
5. Check if TS connection is damaged.
If not, contact NAVAC techsupport.
6. Check if the connection between TP
and MCB is good. If good.
7. Replace digital control board.
8. Replace circuit board.
9. Cool down the machine.
10. Check if connection wire between
motor and MCB is good.If good,
contact NAVAC techsupport.
1. Refer to section 6 of OPERATION
on page 3.
2.
When Fault 7 and Restart flash,
press START.
3. Replace the tank. When O.F.P
Cutoff and Restart flash, press
START.
4. Could restart with pressure rise.
Check if the connection between LS or
HS to DCB is good. If good, replace
pressure sensor.
1. The pressure of the refrigerant tank 1 . Cooling the tank help decrease the
Slow recovery
is too high.
pressure.
rate
2. Piston ring of compressor is
2. Contact NAVAC techsupport.
damaged.
Not evacuate
1. Connection hose is loose.
2. Machine leaks.
1. Tighten the connection hoses.
2. Contact NAVAC techsupport.
13