MBRAUN LABmaster pro sp - Page 251

11 Troubleshooting
Definition of alarm and warning messages
MB-20-G/MB-200G-W_MB-LABmaster_MB-200 MOD_TP700
Operating Manual - V5.0 - 04/2018 - STD
Page
11 - 17
No Description Possible fault causes Solution Elimination
218 Refrigerator: temper-
ature sensor fault
Temperature sensor
defective
Temperature sensor
unplugged
Replace tem-
perature
sensor.
Plug in tem-
perature
sensor.
220 Box pressure control
error - box open or
glove tear
Box open or tear in
glove
Check box
pane and
gloves for
large leaks.
Contact
MBRAUN Ser-
vice.
221 Pressure sensors
box1 and box2: differ-
ence in measurement
values is too high
Zero-point drift on box
pressure sensors too
high
Box1 and box 2 gas
stream circulation dif-
fers
Perform zero-
point compar-
ison for box
pressure
sensors.
Different
HEPA filter
soiling on
box1 and
box2.
225 Box pressure sensor
on box 2 defective
Box pressure sensor
defective
Box pressure sensor
unplugged
Replace box
pressure
sensor.
Plug in box
pressure
sensor.
226 Box pressure on box
2 is too low
Vacuum valve on gas
purifier does not close
Vacuum valve on
antechamber does not
close
Refill valve on ante-
chamber is not closed
Replace de-
fective valve.
227 Box pressure in box 2
is too high
Pressure line in the
box leaking or torn
Purge gas flow rate
too high for automatic
purge
Eliminate leak
in the gas sup-
ply.
Limit purge
gas flow rate.