USER MANUAL
TD069-O&M-001
REVISION 6
Page 63 of 80
No. Module Description Condition *Action User Action
17 QEXT1 Air inlet valve
fault
If valve not in position and transition monitor
time expired.
2 Contact
Bioquell
18 QEXT1 Air exhaust
valve fault
If valve not in position and transition monitor
time expired.
2 Contact
Bioquell
19 QEXT1 Particle counter
divert valve
fault
If Level 3 monitoring option enabled and
valve not in position and transition monitor
time expired.
2 Contact
Bioquell
20 QEXT1 Active air
sampler fault
If Level 2 monitoring option enabled and no
signal received from Air Sampler.
Turns
sampler
off
Check air
sampler is
plugged in,
check dish is
fitted
21 QEXT1 Extract duct
pressure fault
If option enabled and pressure higher than
pressure switch setting.
2 Check duct fan
operation.
Check tube
from duct to
back of unit.
22 QEXT1 EMM fan
rotation fault
No tacho feedback signal received from EMM
fan.
2 Contact
Bioquell
23 QEXT1 Centre door
timeout
Unable to achieve locking or unlocking of door
in time available.
2 Open and shut
door, check
seal for leaks
24 QEXT1 Centre door
open
Door is open when it should be closed. 2,3 Close Centre
door
25 QEXT1 QSDM door
timeout
Unable to achieve locking or unlocking of door
in time available.
2 Open and shut
door, check
seal for leaks
26 QEXT1 QSDM door
Open
Door is open when it should be locked closed. 2 Close Side door
27 QEXT1 Chamber
pressure sensor
error
Always active, if 4-20mA signal <3mA. 2 Contact
Bioquell
28 QEXT1 Return airflow
pressure sensor
error
Always active, if 4-20mA signal <3mA. 2 Contact
Bioquell
29 QEXT1 EMM humidity
sensor error
Always active, if 4-20mA signal <3mA. 2 Contact
Bioquell
30 QEXT1 EMM chamber
temperature
sensor error
Always active, if 4-20mA signal <3mA. 2 Contact
Bioquell
31 QEXT1 EMM_H2O2
sensor error
Always active, if 4-20mA signal <3mA. 2 Contact
Bioquell
32 QEXT1 Chamber
pressure low
Actual pressure lower than setpoint minus
offset.
2,3 Identify and
resolve any
leaks
33 QEXT1 Chamber
pressure high
Actual pressure higher than setpoint plus
offset.
2,3 Identify and
remove any
blockages