BrainBee multigas 8500, Service Manual, Page: 72 / 78

ENGLISH 72 / 78 CAP. 16 - TROUBLE SHOOTING
MULTIGAS 8500
CAP. 16 - TROUBLE SHOOTING
MALFUNCTION POSSIBLE CAUSE POSSIBLE SOLUTION
1. If the “SD card not present”
message is shown during switch
on and/or during software
update just downloaded from
the web.
SD card absent or not
mounted well.
1. Insert or check SD card
insertion.
2. Reprogram the recharge station.
2. Slow or not possible
refrigerant injection.
Joints seal gaskets cut for
excessive tightening (they
cause clogging of pipes
and operational block of
the machine, with different
consequences based on
the position of the gasket -
in any case it is always
related to clogging of a
pipe or dirt in the solenoid
valves).
1. Localisation of the defects of the
rubber components or dirt residue
and replacement or cleaning.
2.Carry out emptying of the gas as
described in chap.13.2.1
3. If yellow pipes are present,
check and, if needed, replace the
seal gaskets placed inside the pipe
which connects the solenoid valves
group to the tank.
3. During the recovery phase
there is an evident refrigerant
leak from the exhausted oil
container.
The leak test is negative.
Dirt inside the Oil
discharge solenoid valve.
1. Cleaning of the solenoid valve
OUT – S.
2. Check of the gasket efficiency.
3. calibrate pressure sensor
4. Difficulty in the recovery and
recharge phase
Closed refrigerant tank.
Seal gaskets, broken or
deformed, are obstructing
the pipes.
1. Open the tank valve by
unscrewing it counter clockwise.
2.Carry out emptying of the gas as
described in chap.13.2.1
3. Reset the normal seal conditions
of the HP-LP taps gaskets and the
HP-LP couplers, both internal and
external.
4. If yellow pipes are present,
check and, if needed, replace the
seal gaskets placed inside the pipe
which connects the solenoid valves
group to the tank.
5. During the automatic cycle it
is not possible to inject and
recover the oil.
Oil loading cell out of
calibration or defective.
1. Calibration of the exhausted
and new oil scales.
2. Replace if needed.
6. Vacuum pump emits
disturbing vibrations
Defective vacuum pump Vacuum pump replacement
7. After the vacuum phase the
leak test has a negative result.
This may occur when the
vacuum time is too short,
4-5 minutes.
When a vacuum time less than 20
minutes is set, the following
message appears:
“Less than 20 minutes of vacuum
do not guarantee the execution of
a correct procedure. Continue?”.