Empowering you to work smarter
NAVAC
TROUBLESHOOTING
PROBLEM
CAUSE
REMEDY
1. Motor or power supply fails
Check and repair
2. Power voltage is too low
Check power voltage
Difficult start-up
3. Extension power cable is too long
Shorten the length of power cord to
eliminate voltage drop
4. Foreign substance falls into the vacuum
Check and dear it
pump
1. Vacuum pump oil seal is damaged
Replace the oil seal
Oil leaking
2. Oil tank connecting tube is loose or
damaged
Tighten the screw or replace the O ring
Oil discharge from
1. Too much oil in pump
Drain oil to the oil level line
filVexhaust cap
1. Insufficient oil in the vacuum pump
Fill oil to the centerline of oil mark
2. Engine oil in the vacuum pump is
emulsified, or dirty
Replace with new oil
3. Oil inlet port of vacuum pump is blocked
Clean oil inlet port and filter screen
Leak alarm in
or oil supply to the pump is insufficient
vacuum mode
4. The copper connection hose leaks
Check the connection hose
5. Components on the pump worn out due
Check and repair the pump or replace it
to long hours of use
with a new one
6. Manifold connection is loose
Tighten the connector
1. The wireless electronic scale is too far
Have the electronic scale close to the
from the Charging System
charging system
2. The weight of the refrigerant cylinder is
beyond the range of the electronic scale
Select a proper refrigerant cylinder
Electronic scale
Re-sync the scale to the charging
alarm
3. Something is wrong with wireless sync
system following instructions
4. There is no refrigerant cylinder on the
Put the refrigerant cylinder on the scale
scale while charging
Alarm because of
1. Not enough refrigerant left in cylinder, or
Replace the refrigerant cylinder, or
insufficient pressure
cylinder has been in very cold ambient
warm ff very cold
conditions
Temperature probe
1. probe is too far from charging machine
Place it closer
alarm
2. not sync
Re-sync
17
Empowering you to work smarter
NAVAC
18
