49
8.
When attaching the flowhead connection tube ensure that the
matching coloured/serrated edge pressure tappings on the
flowhead and the Vitalograph COMPACT are connected to each
other.
9.
It is recommended that an accuracy check is carried out following
reassembly to verify correct operation and accuracy.
F
AULT
F
INDING
G
UIDE
Problem Fault
Symptoms:
•
Accuracy check variations > +/-3%
•
False readings suspected
Possible Causes:
(In probable
order)
•
Recheck Calibration with reference to section
Checking Accuracy
•
Was the correct syringe volume selected?
•
An
accuracy
check
is
required
after
cleaning/disinfecting
the
flowhead
fleisch
element assembly.
•
Flowhead cone fleisch element filter mesh
missing or blocked.
•
Flowhead body pressure port holes blocked.
•
Flowhead fleisch element assembly sealing ‘O’
rings damaged.
•
Flowhead fleisch element assembly not dried
thoroughly.
•
Flowhead fleisch element assembly blocked.
•
Flowhead body tubing from pressure ports to
main PCB blocked – contact support.
•
Main PCB failure – contact support.
Problem Fault
Symptoms:
•
Test begins automatically
•
Volume accumulates automatically without the
subject blowing.
•
Very small VC or FVC test displayed
Possible Causes:
(In probable
order)
•
Flowhead and/or tubing not stationary at the
start of test. Hold them steady until the ‘Ready
to Blow’ prompt appears.
•
Return to Home screen and re-enter the test
routine.
Problem Fault
Symptoms:
•
Communication failure